Fastener Basics
Common Fastener Types Fastener Materials Hex bolts, or hex cap screws, are used in Note: Do not rely on this guide for color-matching. The machinery and construction. Can be used with a appearance of these materials sometimes differs signifi- nut, or in a tapped hole. Fully threaded hex bolts cantly from the photos below. are also known as tap bolts. Zinc-plated steel is a low carbon steel for Wood screws have large threads and a smooth general use. Relatively shank f or pulling two pieces of material together. inexpensive, with the They can be used in wood and other soft materi- zinc plating providing als. moderate corrosion Sheet metal screws have sharp points and resistance suitable for threads, and are designed to be driven directly indoors or otherwise into sheet metal. They can also be used in softer dry conditions. Color is materials like plastic, fiberglass, or wood. either a blue-ish tint or Machine screws are fully threaded for use with a yellow depending on the exact process. nut or in a tapped hole. Certain types are some- Hot-dipped galvanized times referred to as stove bolts. steel has a thicker zinc Socket screws are machine screws with an coating for better internal hex socket (Allen) drive. Longer lengths corrosion resistance, may have a smooth shank. making it suitable for outdoor use. Because Lag bolts, or lag screws, are large wood screws of the thick plating, with hex heads. Typically used for wood only galvanized nuts and washers will fit construction. galvanized bolts. The coating typically has a Carriage bolts have smooth, domed heads with rough, dull grey finish. a square section underneath that pulls into the Stainless steel offers material to prevent spinning during installation. good corrosion Nuts are used to fasten machine threaded resistance, making it fasteners in through-hole applications. Lock nuts suitable for outdoor help prevent loosening. use and marine applications, but is Washers spread the load over a greater surface more expensive than zinc plated. area when tightening a bolt, screw or nut. Lock washers help prevent loosening. Chrome and nickel plated steel are smooth and polished Tip: Find a more comprehensive fastener type chart at http://boltdepot.com/info for appearance. The plating offers moderate corrosion resistance. Grade/Class & Fastener Strength Brass and bronze are Fastener Grade (US) or Class (metric) refers to the mechanical proper- copper alloys with good ties of the fastener material. Generally, a higher number indicates a corrosion resistance. stronger, more hardened (but also more brittle) fastener. More expensive than For a chart of fastener grades, head markings and mechanical properties, see steel, these materials Bolt Depot’s Grade markings and Strength Chart at http://boltdepot.com/info are typically used for decorative applications. US bolt head markings Metric bolt head markings Colors can vary significantly. Alloy steel is highly 8.8 10.9 12.9 hardened and usually Low Carbon Grade 5 Grade 8 Class 8.8 Class 10.9 Class 12.9 black oxide and/or oil coated, offering little Note: In addition to these markings, the head will often have a manufacturer stamp. corrosion resistance.
Page 1 Copyright © 2000-2017 Bolt Depot Inc. How Fasteners are Notated: An Example
Machine screws, Phillips pan head, Stainless steel 18-8, #12-24 x 1"
Fastener type Material Diameter Length Thread Count (TPI) Drive Types Head Styles Measuring Diameter Phillips and Slotted Hex heads are typically For most drives are common used with larger bolts and types of Phillips Slotted in screws, but prone screws, and tightened with a fasteners, to cam-out wrench. the diameter (stripping). Pan heads have a slightly is measured on domed head that sits above the outside of Combo drives, that the surface. the threads. can be used with Combo either driver, are Flat heads are installed in a Note: US diameters under 1/4” are given as numbers (e.g. available for many countersunk hole for a flat #12) instead of inches, in order of increasing size. If you need fastener types. surface. to find the actual diameter, use a table corresponding to your fastener type at http://boltdepot.com/info Frearson and Pozidriv Round heads are tall domed are similar to Phillips, heads, used primarily for Frearson Pozidriv but less prone to decorative purposes. cam-out. Thread Count & Thread Pitch Oval heads are a low domed and countersunk Machine threaded fasteners specify a thread Hex socket (Allen) density in Threads Per Inch (US) or as a Thread drives are compact heads, used primarily for decorative purposes. Pitch in mm (Metric). Hex socket and easy to drive, but (Allen) prone to cam-out. Truss heads are slightly For a given diameter, a fastener may be available domed, with a wide head for in coarse (standard), fine and sometimes super Star and Square drive an extra large surface area. fine thread. are resistant to cam-out and can be Socket heads are narrow Star Square with a socket drive, and (Robertson) installed single- handed. knurled or smooth sides. Measuring Length Button heads feature a Fastener length is Note: Most drive types (Frearson and Slotted medium dome. Typically usually measured from being notable exceptions) require the correct used with a hex socket where the material is driver size for proper installation. drive. assumed to be to the end of the fastener. Thus, countersunk Nut & Washer Sizes fasteners are measured overall and non-counter- Nut and washer sizes indicate the screw or bolt they fit. For example: sunk fasteners are measured from under the head.
3/8”-16 Hex Bolt 3/8” Washer 3/8” -16 Nut More Information Different washer patterns have different outside diameters. For example, hardened US washers are At http://boltdepot.com/info you'll find: available in USS (wider) and SAE (narrower) • In-depth fastener info patterns. Fender washers have large outside diameters. • Charts and tables • Printable lay-over charts and tools for quickly identifying fastener sizes 1/4” 1/4” 1/4” x 1” and types SAE USS Fender • Much more...
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Fastener Categories
Wood Screws Machine Screws Thread Cutting Sheet Metal Screws Screws with a smooth shank Screws with threads for use Machine Screws Fully threaded screws with a and tapered point for use in with a nut or tapped hole. Machine screws with a thread point for use in sheet metal. wood. Abbreviated WS. Abbreviated MS. cutting (self tapping) point. Abbreviated SMS.
Self Drilling SMS Hex Bolts Carriage Bolts Plow Bolts A sheet metal screw with a Bolts with a hexagonal head Bolts with a smooth rounded Similar to carriage bolts but self drilling point. with threads for use with a head that has a small square used for attaching the cutting nut or tapped hole. Abbrevi- section underneath. edge of a plow to the plow ated HHMB or HXBT. blade.
Socket Screws Lag Bolts Eye Bolts Eye Lags Socket screws, also known Bolts with a wood thread and A bolt with a circular ring on Similar to an eye bolt but with as Allen Head, are fastened pointed tip. the head end. Used for wood threads instead of with a hex Allen wrench. Abbreviated Lag. attaching a rope or chain. machine thread.
J-Bolts U-Bolts Shoulder Bolts Elevator Bolts J shaped bolts are used for Bolts in U shape for attaching Shoulder bolts (also known Elevator bolts are often used tie-downs or as an open eye to pipe or other round as stripper bolts) are used to in conveyor systems. They bolt. surfaces. Also available with create a pivot point. have a large, flat head. a square bend.
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Fastener Categories (continued)
Sex Bolts Mating Screws Hanger Bolts Set Screws Sex bolts (a.k.a. barrel nuts or Mating screws have a Hanger bolts have wood Machine screws with no head Chicago bolts) have a female shoulder that matches the thread on one end and for screwing all the way into thread and are used for diameter of the sex bolts machine thread on the other threaded holes. through bolting applications they are used with. end where a head is desired on both sides of the joint.
Timber Bolts Cotter Pins Rivets Machine threaded fasteners Cotter or split pins have two Used to join sheets of metal. with a wide domed head. The tines which are bent apart to During installation the rivet head has fins underneath hold them in place. body is deformed to perma- that prevent the bolt from nently lock in place. Blind spinning during installation. rivets can be installed without Typically used in wood. access to the back side of the material.
Head Styles
Flat Oval Pan Truss A countersunk head with a A countersunk head with a A slightly rounded head with An extra wide head with a flat top. rounded top. short vertical sides. rounded top. Abbreviated FH Abbreviated OH or OV Abbreviated PN
Round Hex Hex Washer Hex Flange A domed head. A hexagonal head A hex head with built in A hex head with built in Abbreviated RH Abbreviated HH or HX washer. flange.
Slotted Hex Washer Button Socket Cap A hex head with built in A low-profile rounded head A small cylindrical head using washer and a slot. using a socket drive. a socket drive.
Copyright © 2000-2017 Bolt Depot Inc. Fastener Type Chart www.boltdepot.com/tools
Drive Types
Phillips and Frearson Slotted Combination Socket, Hex or Allen An X-shaped drive. A slot in the head. A combination of slotted and A hexagonal hole for use Abbreviated PH. Abbreviated SL. Phillips drives. with an Allen wrench. Abbreviated combo.
One Way Square Star Installs with a normal slotted Also known as Robertson A six-pointed star pattern, driver but can not be drive. specifically designed to removed without special Abbreviated SQ or SD. prevent cam-out and stripped tools. heads.
Washer Types
Flat Fender Finishing Split Lock A flat washer, used to An oversize flat washer used A washer used to obtain a The most common style of distribute load. Available in to further distribute load ‘finished’ look. Usually used washer used to prevent nuts SAE, USS and other patterns. especially on soft materials. with oval head screws. and bolts from backing out.
External Tooth Lock Internal Tooth Lock Square Dock A washer with external A washer with internal ‘teeth’. A square shaped washer. Dock washers have a larger ‘teeth’. Used to prevent nuts Used to prevent nuts and outside diameter and are and bolts from backing out. bolts from backing out. thicker than standard.
Ogee Thick, large diameter, cast iron washers with a curved or sculpted appearance. Typically used in dock and wood construction. Copyright © 2000-2017 Bolt Depot Inc. Fastener Type Chart www.boltdepot.com/tools
Nut Types
Hex Heavy Hex Nylon Insert Lock Jam A six sided nut. Also referred A heavier pattern version of a A nut with a nylon insert to A hex nut with a reduced to as a Finished Hex Nut. standard hex nut. prevent backing off. Also height. referred to as a Nylock.
Nylon Insert Jam Lock Wing Cap Acorn A nylock nut with a reduced A nut with ‘wings’ for hand A nut with a domed top over Acorn nuts are a high crown height. tightening. the end of the fastener. type of cap nut, used for appearance.
Flange Tee Square Prevailing Torque Lock A nut with a built in washer A nut designed to be driven A four sided nut. A non-reversible lock nut like flange. into wood to create a used for high temperature threaded hole. applications.
K-Lock or Kep Coupling Slotted Castle A nut with an attached Coupling nuts are long nuts Slotted nuts are used in Castle nuts are used in free-spinning external tooth used to connect pieces of conjunction with a cotter pin conjunction with a cotter pin lock washer. threaded rod or other male on drilled shank fasteners to on drilled shank fasteners to fasteners. prevent loosening. prevent loosening.
Pin Lock A nut that does not require an high installation torque and can be installed and removed without thread damage. Copyright © 2000-2017 Bolt Depot Inc. Fastener Type Chart www.boltdepot.com/tools
Anchoring Products
Stud Anchors Sleeve Anchors Lag Shields Machine Screw Anchors A.k.a. Wedge Anchors. One Heavy duty masonry anchors. Medium dury anchors for use A two-piece machine thread piece expansion bolts for Does not require a solid base in concrete, brick or mortar. anchor for use in stone, brick, heavy duty fastening into material for installation. Use with a lag bolt. or concrete. stone or solid concrete.
Drop-in Anchors Double Expansion Sleeves Concrete Screws Spring Toggle Wings A heavy duty machine thread Expansion anchor for Used in concrete, brick or Non-removable fasteners anchor for concrete or stone. masonry that ensures contact block. A quick and easy way that expand behind the along the length of the hole. to fasten in light to medium material, e.g. inside a wall, for duty applications a secure grip.
Plastic Toggle Kaptoggle® Conical Anchors Self Drilling Drywall When these anchors are A non removable anchor Plastic anchors used with Anchors driven in they expand inside commonly used for hollow sheet metal screws. Can be Quick-install plastic anchors the hole for a secure grip. spaces such as drywall and used in most materials. used in drywall with sheet Drill hole the same size as masonry block. metal screws. the anchor. Non-removable.
Wood Screw Anchors Hollow Wall Anchors Nail Drive Anchors Anchor Bolts This anchor is made of lead A.k.a. Molly Bolts. Used for Non removable anchors that L shaped, machine threaded and can be used with wood light duty anchoring in expand inside the hole when anchors. Typically embedded screws or sheet metal drywall or other hollow walls. the nail like pin is driven. in concrete when it is poured. screws.
Copyright © 2000-2017 Bolt Depot Inc.
220 210 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 mm 230
US and Metric For more printable tools and charts, see Ruler www.boltdepot.com/tools
in 1 2 3 4 5 6 7 8 9
cut or fold
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IMPORTANT: Make sure to print this chart to Actual Size (no scaling). After printing, check the ruler (e.g. against the short side of a letter size paper - 8 ½ in - or another ruler) to ensure correct scale. See boltdepot.com/tools for more details. US and Metric Thread Sizes www.boltdepot.com/tools
US Thread Sizes Metric Thread Pitches in 230 7 threads per inch 2.5 mm thread pitch 220 210 1 8 tpi
2.0 mm 200
9 tpi 190 2 180
1.75mm
10 tpi 170 160 3 11 tpi
1.5mm 150
12 tpi 140 4 130 1.25mm 13 tpi 120
14 tpi 110 5 1.0mm 100 16 tpi 90 6 18 tpi 0.8mm 80 70 20 tpi 60
7 0.7mm 24 tpi 50
28 tpi 40
0.5mm 30 8 32 tpi
40 tpi 20 Copyright © 2000-2017 Bolt Depot Inc. IMPORTANT: Make sure to print this chart to Actual Size (no scaling). 10
9 After printing, measure the ruler in the margin to ensure correct scale. Seewww.boltdepot.com/tools boltdepot.com/tools for more details. mm US Hex Bolt Sizes and Thread Pitches www.boltdepot.com/tools 3/8” Length is measured from under the head 3/8” - 16 in to the end of the bolt 230 Length Coarse thread #4 220 #4 - 40 3/8” - 24 210 1 Coarse thread
Fine thread 200 #6 #6 - 32 7/16” 190
2 Coarse thread 7/16” - 14 180
#8 170 #8 - 32 Coarse thread 7/16” - 20 160
3 Coarse thread 150 #10 #10 - 24 Fine thread 140 1/2” Coarse thread 4
1/2” - 13 130 #10 - 32 120 Fine thread Coarse thread 110 5 1/4” 1/2” - 20
1/4” - 20 100 90 Coarse thread Fine thread 6 1/4” - 28 80 9/16” Fine thread 9/16” - 12 70 60
7 5/16” 5/16” - 18 Coarse thread 50
9/16” - 18 40 Coarse thread 5/16” - 24 30 8
Fine thread Fine thread 20
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in
7/8” 230
5/8” 7/8” - 9 220 5/8” - 11 210 1 200
Coarse thread
Coarse thread 190 2
5/8” - 18 180 7/8” - 14 170 160
3 Fine thread 150 Fine thread 140 4 130 1” 120 3/4” 1” - 8
3/4” - 10 110 5 100 90
Coarse thread Coarse thread 6 80
3/4” - 16 1” - 14 70 60 7 50
Fine thread 40 Fine thread 30 8 20
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Length is measured from where the surface is assumed to be, to in the end of the screw. Therefore, pan head screws are measured from under the head, and flat head screws are measured overall. 230
Length #12 220 #2 #2 - 56 #12 - 24 210 1 Pan head Pan head 200 Flat head 190 #4 #4 - 40 Flat head 2 180 Pan head 1/4”
1/4” - 20 170 Flat head 160
3 Pan head #6 #6 - 32 150 Pan head Flat head 140
Flat head 4 5/16” 130 #8 5/16” - 18 #8 - 32 120
Pan head 110 Pan head 5
Flat head 100 90 #10 Flat head #10 - 32 6 80
Pan head
3/8” 70 3/8” - 16
Flat head 60 7 Pan head #10 50 #10 - 24
Pan head 40 30 8 Flat head Flat head 20
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Fastener length is measured from where the material in surface is assumed to be, to the end of the fastener. 230
Length Length 220 #4
Flat head Pan head 210 1
Oval head Truss head 200
#6 190
Flat head Pan head 180
Oval head Truss head 170
#8 160 3
Flat head Pan head 150
Oval head Truss head 140 4
#10 130
Flat head Pan head 120 110
5 Oval head Truss head 100 #12 90
Flat head Pan head 6 80
Oval head Truss head 70 60
7 #14 50 Flat head Pan head 40 30 8 Oval head Truss head 20
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9 After printing, measure the ruler in the margin to ensure correct scale. Seewww.boltdepot.com/tools boltdepot.com/tools for more details. mm US Nut Sizes www.boltdepot.com/tools Jam Hex Jam Nylock nylock in 230
#0 N/A N/A N/A 5/32” wrench 220 #1 N/A N/A N/A 5/32” wrench 210 1 #2 N/A N/A N/A 3/16” wrench
#3 N/A N/A N/A 200 3/16” wrench 190 #4 N/A N/A
2 1/4” wrench
Note: Hex nuts with a 180 #5 N/A N/A N/A diameter under 1/4” are called 5/16” wrench hex machine screw nuts 170
#6 N/A N/A 160 3 5/16” wrench 150
#8 N/A N/A 11/32” wrench 140
4 #10 3/8” wrench N/A 130 120 #12
7/16” wrench N/A N/A 110 5 100 1/4" 7/16” wrench 90 6 80 5/16" 1/2” wrench 70 60
7 3/8" 9/16” wrench 50 40 7/16"
11/16” wrench 30 8 20
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9 After printing, measure the ruler in the margin to ensure correct scale. See www.boltdepot.com/tools boltdepot.com/tools for more details. mm US Nut Sizes (continued) www.boltdepot.com/tools Jam Hex Jam Nylock nylock in 1/2" 230 3/4” wrench 220 210 1
5/8" 200 15/16” wrench 190 2 180 170 160
3 3/4" 1-1/8” wrench 150 140 4 130 120 7/8”
1-5/16” wrench 110 5 100 90 6 80 70
1”
1-1/2” wrench 60 7 50 40 30 8 20
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Washer sizes correspond to the screw/bolt in diameter they fit. For example, a 1/2” washer #10 1/4" 5/16"
fits a 1/2” bolt, and therefore has an inner 230 diameter of just over 1/2”. 220 210 1
3/8" 7/16" 1/2" 9/16" 200 190 2 180 170 160 3
5/8" 3/4" 7/8" 150 140 4 130 120 110 5 100 90 Large USS Washer Sizes 6 Diameter 1" 80 Size Inside Outside 70 1-1/8" 1-1/4" 2-3/4" 1-1/4" 1-3/8" 3" 60
7 1-3/8" 1-1/2" 3-1/4"
1-1/2" 1-5/8" 3-1/2" 50 1-5/8" 1-3/4" 3-3/4"
1-3/4" 1-7/8" 4" 40 2" 2-1/8" 4-1/2" 30 8 20
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Washer sizes correspond to the screw/bolt diameter in they fit. For example, an 1/4” washer fits an 1/4” bolt,
and therefore has an inner diameter of just over 1/4”. 230 220 210
1 #2 #4 #6 #8 200 190 2 180 #10 #12 1/4" 5/16" 3/8" 170 160 3 150 140 7/16" 1/2" 9/16" 5/8" 4 130 120 110 5 100 90
6 3/4" 7/8" 1" 80 70 60 7 50 40 30 8 20
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9 After printing, measure the ruler in the margin to ensure correct scale. Seewww.boltdepot.com/tools boltdepot.com/tools for more details. mm US Socket Cap Sizes www.boltdepot.com/tools 5/16” 5/16"-18 5/8” Fastener length is measured 5/8"-11 in from where the material
surface is assumed to be, to Coarse thread 230 the end of the fastener. 5/16"-24 Length 220 #2 Coarse thread #2-56 Fine thread 210 1 3/8” 5/8"-18 #2-64 3/8"-16 200 #4 #4-40 Coarse thread 190 Fine thread
2 #4-48 3/8"-24 180 3/4”
#6 170 #6-32 Fine thread 3/4"-10 7/16”
Coarse thread 7/16"-14 160 3 #6-40
Fine thread 150 #8 Coarse thread Coarse thread #8-32 7/16"-20 140
4 Coarse thread 3/4"-16 130 #8-36 Fine thread 120 Fine thread 1/2” 1/2"-13
#10 110 #10-24 Fine thread 5
Coarse thread 100 #10-32 Coarse thread 7/8”
1/2"-20 90 7/8"-9 Fine thread 6 #12 80 #12-24 Fine thread 70
Coarse thread 9/16”
#12-28 9/16"-12 Coarse thread 60 7
Fine thread 50 7/8"-14 1/4” Coarse thread
1/4"-20 40 9/16"-18 30 8 Coarse thread 1/4"-28
Fine thread 20 Fine thread Fine thread Copyright © 2000-2017 Bolt Depot Inc. IMPORTANT: Make sure to print this chart to Actual Size (no scaling). 10
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in
1-1/4"-7 230
1” 220 210
1 1"-8 200
Coarse thread 190 2
Coarse thread 180 170 1"-14 1-3/8” 160 3 1-3/8"-6 150 140 Fine thread 4 130 120
Coarse thread 110
5 1-1/8” 100 1-1/8"-7
1-1/2” 90 6 80 1-1/2"-6 70
Coarse thread 60 7 50 40
Coarse thread 30 8 20
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9 After printing, measure the ruler in the margin to ensure correct scale. Seewww.boltdepot.com/tools boltdepot.com/tools for more details. mm US Socket Flat Head Sizes www.boltdepot.com/tools 5/16” 5/8” Fastener length is measured from 5/16"-18 in where the material surface is 5/8"-11 assumed to be, to the end of the 230 fastener. Coarse thread 220 #2 #2-56 5/16"-24 Coarse thread 210 1 Coarse thread
Length Fine thread 200 5/8"-18
#4 3/8” 190 #4-40
2 3/8"-16
Coarse thread 180
Fine thread
#6 Coarse thread 170 #6-32
Coarse thread 160 3 3/8"-24
#8 150 #8-32 Fine thread 7/8” 140 Coarse thread 7/16” 4 7/8"-9 130 #10 7/16"-14 #10-24 120
Coarse thread
Coarse thread 110
5 #10-32 Coarse thread
7/16"-20 100 Fine thread 90
Fine thread 6
#12 80 #12-24 1/2”
1” 70 Coarse thread 1/2"-13
1”-8 60 7 1/4” 1/4"-20 Coarse thread 50 40 Coarse thread 1/2"-20 30 8 1/4"-28 Coarse thread
Fine thread Fine thread 20
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Fastener length is measured from where in the material surface is assumed to be, to
the end of the fastener. 230 220
Length 210
1 3/8” #2 #12 #2-56 #12-24 3/8"-16 200 Coarse thread Coarse thread
Coarse thread 190 2
3/8"-24 180 #4 #4-40 1/4” 1/4"-20 170 Coarse thread Fine thread 160
3 Coarse thread 150 #6 1/4"-28 #6-32 140 Fine thread Coarse thread 4
1/2” 130 1/2"-13 120 #8 #8-32 5/16” 5/16"-18 110 5 Coarse thread Coarse thread 100 Coarse thread
1/2"-20 90 #10 5/16"-24 6 #10-24 80
Fine thread
Coarse thread Fine thread 70
#10-32 60 7
Fine thread 50 40 30 8 20
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Length 220 1/2"-13 Thread 1/8” 3/4” 210 1
#4-40 Thread 200 5/32” 190
2 #6-32 Thread 5/8"-11 Thread 3/16” 180 1” 170 #8-32 Thread 7/32” 160 3
#8-32 Thread 150 1/4”
3/4"-10 Thread 140 4
#10-24 Thread 1-1/4” 130 120 #10-32 Thread
5/16” 110 5 100
1/4"-20 Thread 7/8”-9 Thread 90 3/8” 6 80 1-1/2” 70 1/4"-20 Thread 60 7
5/16"-18 Thread 50
1/2” 40 30 8 1-1/8"-7 Thread
3/8"-16 Thread 20 Copyright © 2000-2017 Bolt Depot Inc. IMPORTANT: Make sure to print this chart to Actual Size (no scaling). 10
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Screw eyes are sold by industry trade sizes (e.g. 112), .135” wire continued in which correspond to a specific wire diameter,
inside eye diameter and length. 230
wire diameter .222” wire 110 220 length
.120” wire 210 1 112 industry inside trade size 10 200 eye diameter 213-1/2 190 .056” wire 2
.105” wire 180 .148” wire 217-1/2 170 212-1/2
9 160 3 .062” wire
212 150 216-1/2 .160” wire 140 216
4 112 130
208-1/2
.072” wire 120 12 110 5 215-1/2 208 100 .120” wire 90
.080” wire 108 6 80 211
214-1/2 70 .135” wire 60 214 8-1/2 7 50 210-1/2 114 40
8 30 8 14 210 20
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.192” wire .264” wire in 230 220 6 210
1 2 200
.307” wire 190 2
106 180 170 160
3 0 150 206 140 .331” wire 4 130 .225” wire 120 110 5
00 4 100 90 6 80 .365” wire 70
104 60 7 50
000 40 30 8 204 20
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Length is measured from under the head to the end of the bolt in Note: Head sizes may differ from what is shown due to differences between metric standards 230
Length 10mm 220 10mm x 1.5mm
3mm 210 1 3mm x 0.5mm 14mm
Coarse thread Coarse thread 200 14mm x 2.0mm
4mm 10mm x 1.25mm 190 4mm x 0.7mm 2
Coarse thread 180 Coarse thread Fine thread
5mm 170 5mm x 0.8mm 10mm x 1.0mm 14mm x 1.5mm 160 3 Coarse thread Super fine thread Fine thread 150 6mm 6mm x 1.0mm 140 4
Coarse thread 130
7mm 16mm 120 7mm x 1.0mm
16mm x 2.0mm 110 12mm 5 12mm x 1.75mm Coarse thread 100
Coarse thread 90 Coarse thread
6 8mm 16mm x 1.5mm 80 8mm x 1.25mm 12mm x 1.5mm 70
Coarse thread
Fine thread 60 8mm x 1.0mm Fine thread 7
12mm x 1.25mm 50
Fine thread 40
Super fine thread 30 8 20
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Length is measured from where the surface is assumed to be, to in the end of the screw. Therefore, pan head screws are measured from under the head, and flat head screws are measured overall. 230 220
Length 210 1 3mm x 0.5mm 6mm x 1.0mm 200
Pan head 190 Pan head 2
Flat head 180
Flat head 170 160 3 150 4mm x 0.7mm 8mm x 1.25mm 140
4 Pan head 130 Pan head 120 Flat head 110
5 Flat head 100 90 5mm x 0.8mm 10mm x 1.5mm 6 80
Pan head 70
Pan head 60
7 Flat head 50
Flat head 40 30 8 20
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in Hex Jam Nylock Hex Jam Nylock 2mm 12mm 230 4mm wrench 19mm wrench N/A 220
2.5mm 210 1 5mm wrench N/A 200 14mm
3mm 22mm wrench 190 5.5mm wrench 2 180
4mm 170 7mm wrench 160 3 16mm
24mm wrench 150 5mm 8mm wrench 140 4 130 6mm
10mm wrench 120
18mm 110 5 27mm wrench
7mm 100 11mm wrench 90 N/A N/A 6 80 8mm 13mm wrench 70 20mm
30mm wrench 60 7
10mm 50 17mm wrench
N/A 40 30 8 20
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Washer sizes correspond to the screw/bolt in diameter they fit. For example, an 8mm
washer fits an 8mm bolt, and therefore has 230 an inner diameter of just over 8mm. 220 210 1 1.6 mm 2 mm 2.5 mm 3 mm 3.5 mm 4 mm 200 190 2 180
5 mm 6 mm 7 mm 8 mm 10 mm 170 160 3 150 140
4 12 mm 14 mm 16 mm 18 mm 130 120 110 5 100 90 6 20 mm 22 mm 24 mm 80 70 60 7 50 40 30 8 20
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in Shoulder bolt size is determined by the diameter
and length of the shoulder. 230 220 210 1 Length
4mm 200
12mm 190 3mm x 0.5 Thread 2 180 5mm
10mm x 1.5 Thread 170
4mm x 0.7 Thread 160 3 150 6mm 16mm 140
4 5mm x 0.8 Thread 130 120
12mm x 1.75 Thread 8mm 110 5 100
6mm x 1.0 Thread 90
20mm 6 80
10mm 70 60 7 16mm x 2.0 Thread 8mm x 1.25 Thread 50 40 30 8 20
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Fastener length is measured from in where the material surface is assumed
to be, to the end of the fastener. 230
10mm 220 Length 10mm x 1.5 14mm 210
1 3mm 3mm x 0.5 14mm x 2.0
Coarse thread Coarse thread 200
4mm 10mm x 1.25 Coarse thread 190 4mm x 0.7 2 180 Coarse thread Fine thread 14mm x 1.5 170
10mm x 1.0
5mm 160 3 5mm x 0.8 Fine thread 150 Coarse thread Super fine thread 140
4 6mm
6mm x 1.0 130 120 Coarse thread 12 mm
12mm x 1.75 16mm 110 5 16mm x 2.0
8mm 100 8mm x 1.25 Coarse thread 90
12mm x 1.5 Coarse thread 6 Coarse thread 80 70 8mm x 1.0 Fine thread 16mm x 1.5 60
7 Fine thread 12mm x 1.25 50
Fine thread 40 Super fine thread 30 8 20
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in Fastener length is measured from where the material
surface is assumed to be, to the end of the fastener. 230 10 mm 220 10mm x 1.5 Length 210 1 3 mm Coarse thread 3mm x 0.5 200
Coarse thread 10mm x 1.25 190 2 4 mm 180 4mm x 0.7 Fine thread 170
Coarse thread 10mm x 1.0 160 3
5 mm 150 Super fine thread 5mm x 0.8 140
Coarse thread 4 12 mm 130 12mm x 1.75
6 mm 120 6mm x 1.0 110
5 Coarse thread Coarse thread 100 12mm x 1.5 90
8 mm 6 80 8mm x 1.25 Fine thread 70
Coarse thread 12mm x 1.25 60
7 8mm x 1.0 50
Fine thread Super fine thread 40 30 8 20
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Fastener length is measured from where in the material surface is assumed to be, to
the end of the fastener. 230 220 Length 10mm 210 1 4mm 10mm x 1.5 4mm x 0.7 200 Coarse thread Coarse thread 190
2 5mm 10mm x 1.25 5mm x 0.8 180
Coarse thread Fine thread 170
10mm x 1.0 160 3 6mm
6mm x 1.0 150
Super fine thread
Coarse thread 140
4 12mm 130 12mm x 1.75 120
8mm 110
5 8mm x 1.25 Coarse thread
12mm x 1.5 100 Coarse thread 90 8mm x 1.0 6 Fine thread 80
Fine thread 70 12mm x 1.25 60 7
Super fine thread 50 40 30 8 20
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