PRECISION MACHINED NUTS PRECISION MACHINED NUTS

Features and Benefits

• Machined Nuts are held 100% square to the tap. They are superior to cold formed and punched nuts which are pushed onto rotating taps and not held perpendicular to the tool.

• Cut threads roll freely with no “tight” spots.

• All SPIROL threads are manufactured to strict standards with specific gages.

• We provide strict lot control and traceability. SPIROL specializes in the manufacture of Precision Machined Nuts. Innovative engineering, purpose-modified automatic screw • Thread pitch diameter allowances are machines, and CNC machines yield production rates that permit engineered for ease of assembly after us to offer quality parts at pricing comparable to less precise plating. manufacturing methods. • Unlike those of some manufacturers, our SPIROL is committed to continuous improvement in all products are clean, dry, burr free, and ready functional and operational areas with the objective of consistently to use. exceeding our customers’ expectations.

SPIROL offers engineering resources as well as stocking locations throughout the world to better serve your critical delivery needs. The bearing surfaces of a Stamped Nut are tapped as a secondary operation by pushing onto a rotating tap. Therefore, the thread cannot be guaranteed to be perpendicular STANDARD SPECIFICATIONS to the bearing surface. This can create camber. MATERIAL E Free-Cutting Brass ASTM B16 UNS 36000 EN 12164 CW603N CuZn36Pb3 RoHS Compliant

FINISHES Threads cut perpendicular to the face of a Precision K Plain Machined Hex Nut N Bright Nickel Plate eliminate camber.

Note: See page 8 for alternate materials and finishes. SERIES H10 FINISHED HEX NUTS SERIES H11 HEAVY HEX NUTS

Hex Nuts are the most versatile and widely used nut design. Finished Hex Nuts are used with bolts to lock Jam Nuts against finished surfaces (see Jam Nuts on next page).

Heavy Hex Nuts are thicker across the flats than comparable Finished Hex Nuts. They are the strongest Hex Nuts because of their greater length of thread engagement, and resistance to stretching and widening. Our standard Finished and Heavy Hex Nuts are double chamfered but can be manufactured with a single chamfer and a washer face.

For applications where vibration, lateral motion, or wedge type loads will tend to loosen the Hex Nut, it is common to use a Jam Nut to maintain joint integrity. The Hex Nut is used to provide the tension to the bolt and the Jam Nut is used to provide a secondary load to the Hex Nut. The Jam Nut is not subject to the same operational conditions as the bolt and Hex Nut and therefore locks the assembly together.

Series H10 Series H11

F H1 H2

HEX NUTS, H10 AND H11 H10 Finished Hex H11 Heavy Hex

Thread Size F H1 F H2 Wrench Size Thickness Wrench Size Thickness 1/4 – 20 .250 – 20 7/16 7/32 1/2 15/64 5/16 – 18 .312 – 18 1/2 17/64 9/16 19/64 3/8 – 16 .375 – 16 9/16 21/64 11/16 23/64 7/16 – 14 .437 – 14 11/16 3/8 3/4 27/64 1/2 – 13 .500 – 13 3/4 7/16 — —

SPIROL DESCRIPTION: NT / Thread Size / Wrench Size x Thickness Material Finish Series # EXAMPLE: NT / .375 - 16 / .562 x .328 EK H10

Note: SPIROL converts wrench size and thickness to decimals for description. 1 SERIES H20 HEX JAM NUTS SERIES H21 HEAVY HEX JAM NUTS

A Jam Nut is typically 2/3 the thickness of its respective Hex Nut counterpart.

A Heavy Hex or Finished Hex Nut is tightened against the work surface and a Jam Nut is secured against the Hex Nut to ensure that the nut does not become loose.

Series H20 Hex Jam Nuts are used with Series H10 Finished Hex Nuts.

Series H21 Heavy Hex Jam Nuts are used with Series H11 Heavy Hex Nuts.

Heavy Hex Jam Nut Series H20 Series H21 Heavy Hex Nut F H1 H2

HEX JAM NUTS, H20 AND H21 H20 Hex Jam H21 Heavy Hex Jam

Thread Size F H1 F H2 Wrench Size Thickness Wrench Size Thickness 1/4 – 20 .250 – 20 7/16 5/32 1/2 11/64 5/16 – 18 .312 – 18 1/2 3/16 9/16 13/64 3/8 – 16 .375 – 16 9/16 7/32 11/16 15/64 7/16 – 14 .437 – 14 11/16 1/4 3/4 17/64 1/2 – 13 .500 – 13 3/4 5/16 — —

SPIROL DESCRIPTION: NT / Thread Size / Wrench Size x Thickness Material Finish Series # EXAMPLE: NT / .375 - 16 / .562 x .219 EN H20

2 Note: SPIROL converts wrench size and thickness to decimals for description. SERIES H30 HEX MACHINE SCREW NUTS

These general-purpose Hex Nuts are designed to be used with machine screws in light to moderate loads or with bolts for heavy loads.

Series H30 F H

HEX MACHINE SCREW NUTS, H30 F H Thread Size Wrench Size Thickness

2 – 56 .086 – 56 3/16 1/16 3 – 48 .099 – 48 3/16 1/16 4 – 40 .112 – 40 1/4 3/32 5 – 40 .125 – 40 5/16 7/64 6 – 32 .138 – 32 5/16 7/64 8 – 32 .164 – 32 11/32 1/8 10 – 24 .190 – 24 3/8 1/8 10 – 32 .190 – 32 3/8 1/8 12 – 24 .216 – 24 7/16 5/32 1/4 – 20 .250 – 20 7/16 3/16 5/16 – 18 .312 – 18 9/16 7/32 3/8 – 16 .375 – 16 5/8 1/4

SPIROL DESCRIPTION: NT / Thread Size / Wrench Size x Thickness Material Finish Series # EXAMPLE: NT / .164 - 32 / .344 x .125 EN H30

Note: SPIROL converts wrench size and thickness to decimals for description. 3 SERIES H31 SMALL PATTERN HEX MACHINE SCREW NUTS

Small Pattern Hex Machine Screw Nuts are designed to be used for light loads. In applications where there is limited room for wrenching, the smaller hex size is an advantage.

Any thread can be made into a Small Pattern Machine Screw Nut. As long as there is enough clearance between the wrench size distance and the thread, nominal thread sizes are available in any nut pattern. This allows a number of unique combinations which can be made to order in addition to our standard offering.

Series H31 F H

SMALL PATTERN HEX MACHINE SCREW NUTS, H31 F H Thread Size Wrench Size Thickness

4 – 40 .112 – 40 3/16 1/16 5 – 40 .125 – 40 1/4 3/32 6 – 32 .138 – 32 1/4 3/32 8 – 32 .164 – 32 1/4 3/32 10 – 24 .190 – 24 5/16 7/64 10 – 32 .190 – 32 5/16 7/64

SPIROL DESCRIPTION: NT / Thread Size / Wrench Size x Thickness Material Finish Series # EXAMPLE: NT / .138 - 32 / .250 x .094 EK H31

4 Note: SPIROL converts wrench size and thickness to decimals for description. SERIES H40 HEX PANEL NUTS SERIES R10 ROUND PANEL NUTS

Panel Nuts are often used wherever a light duty precision fastener is needed. Typically Panel Nuts are designed to be thin and have width dimensions (F) close to the diameter of the fastener they secure. This creates a low profile used in light duty applications because they have low thread counts.

Applications for Panel Nuts include switch hardware, potentiometer controls, cable gland fasteners and lightweight lock nuts.

Series H40 — Hexagon Panel Nuts • Exterior chamfered on all surfaces • No thickness variations • No cutoff burrs

Series R10 — Knurled Round Panel Nuts • Exterior chamfered on all surfaces • Clean full formed knurls free of slivers and flakes

Series H40 H F H F

STRAIGHT KNURL PANEL NUTS, H40 AND R10 H40 Hex R10 Round Thread Size F H F H Wrench Size Thickness Diameter Thickness 1/8 – 27 .125 – 27 1/2 1/8 9/16 3/32 10 – 48 .190 – 48 9/32 3/64 — — 1/4 – 32 .250 – 32 5/16 1/16 — — 1/4 – 32 .250 – 32 3/8 1/16 — — 1/4 – 40 .250 – 40 5/16 1/16 3/8 3/32 5/16 – 32 .312 – 32 7/16 7/64 — — 3/8 – 32 .375 – 32 1/2 3/32 1/2 3/32 15/32 – 32 .469 – 32 9/16 5/64 9/16 5/64 15/32 – 32 .469 – 32 9/16 3/32 5/8 3/32 1/2 – 28 .500 – 28 5/8 1/8 — — 5/8 – 27 .625 – 27 3/4 3/32 3/4 1/8

SPIROL DESCRIPTION: NT / Thread Size / Wrench Size or Diameter x Thickness Material Finish Series # EXAMPLE: NT / .250 - 40 / .312 x .062 EK H40

Note: SPIROL converts wrench size, diameter and thickness to decimals for description. 5 SERIES C10 CLOSED CAP NUTS SERIES C20 OPEN CAP NUTS

Cap Nuts (Acorn Nuts) are available in two basic configurations, open and closed. SPIROL® Cap Nuts are precision machined to withstand substantially higher tightening torque without stripping or having a bolt break through the dome, as can happen with two piece equivalent cap nuts. Generous counterbores allow for an unthreaded portion of the mating component to protrude above the surface.

Series C10 — Closed Cap Nuts Closed Cap Nuts decoratively finish the exposed ends of bolts. They offer protection from the sharp edges of bolts. Completely machined dome surfaces ensure safe handling and smooth and bright finishing.

Series C20 — Open Cap Nuts Open Cap Nuts are used for assembly of bolts whose lengths are imprecise and intended to go all the way through the fastener. Clean machining provides a superior surface for plating and offers a quality appearance.

Series C10 Series C20

H1 H2 F

CAP NUTS, C10 AND C20 C10 C20 C10 C20 Closed Open Closed Open Thread Size F H1 H2 Thread Size F H1 H2 Wrench Height Height Wrench Height Height Size Size 4 – 36 .112 – 36 1/4 1/4 15/64 5/16 – 18 .312 – 18 1/2 13/32 3/8 4 – 40 .112 – 40 1/4 1/4 15/64 5/16 – 18 .312 – 18 9/16 7/16 3/8 6 – 32 .138 – 32 5/16 9/32 1/4 5/16 – 24 .312 – 24 1/2 13/32 3/8 8 – 32 .164 – 32 5/16 9/32 1/4 5/16 – 24 .312 – 24 9/16 7/16 3/8 10 – 24 .190 – 24 3/8 11/32 9/32 3/8 – 16 .375 – 16 5/8 1/2 27/64 10 – 32 .190 – 32 3/8 11/32 9/32 3/8 – 24 .375 – 24 5/8 1/2 27/64 12 – 24 .216 – 24 3/8 11/32 9/32 7/16 – 14 .437 – 14 3/4 9/16 1/2 1/4 – 20 .250 – 20 7/16 3/8 21/64 7/16 – 20 .437 – 20 3/4 9/16 1/2 1/4 – 20 .250 – 20 1/2 13/32 3/8 1/2 – 13 .500 – 13 3/4 9/16 1/2 1/4 – 28 .250 – 28 7/16 3/8 21/64 1/2 – 20 .500 – 20 3/4 9/16 1/2

SPIROL DESCRIPTION: NT / Thread Size / Wrench Size x Height Material Finish Series # EXAMPLE: NT / .250 - 20 / .500 x .406 EN C10

6 Note: SPIROL converts wrench size and height to decimals for description. SERIES T10 KNURLED THUMB NUTS

Thumb Nuts are used in applications where a fastener needs to be adjusted and secured to a finger tight degree.

Popular applications for Thumb Nuts include panel mounts, home hardware, tension adjustment hardware and electrical applications.

Our machining process ensures that Series T10 Thumb Nuts are machined with no thickness variations or burrs. Heavy countersinks permit tightening over the shank portion of bolts that can extend slightly above the surface.

Series T10

F H

RADIUS STEM, SINGLE KNURL THUMB NUTS, T10 F H Thread Size Diameter Height

2 – 56 .086 – 56 1/4 1/4 4 – 40 .112 – 40 3/8 1/4 6 – 32 .138 – 32 3/8 1/4 8 – 32 .164 – 32 7/16 5/16 10 – 24 .190 – 24 1/2 21/64 10 – 32 .190 – 32 1/2 21/64 1/4 – 20 .250 – 20 5/8 3/8 5/16 – 18 .312 – 18 11/16 13/32

SPIROL DESCRIPTION: NT / Thread Size / Diameter x Height Material Finish Series # EXAMPLE: NT / .190 - 24 / .500 x .328 EK T10

Note: SPIROL converts diameter and height to decimals for description. 7 SPECIALS

SPIROL’s Engineers can assist in identifying the best standard Precision Machined Nut to meet the specific application performance requirements. SPIROL can also produce special variations of our standard lines of Machined Nuts. If a unique special Machined Nut is required, SPIROL will design and produce the special for either low or high volume applications.

Examples of special offerings include:

Special Sizes SPIROL’s standard line of Precision Machined Nuts can be easily altered to include metric sizes, specially designed non-standard threads, and non-standard thread pitch configurations. Other special variations include Hexagon Coupling Nuts, Tamperproof Nuts, Bolt Nuts, Railroad Nuts, Lamp and Lighting Parts, Pipe Couplings, Compression Nuts, and more. Should your requirement call for round, hex, square or other external configuration, oversized threads for plating, finely controlled internal diameters or even special machined features, SPIROL can accommodate your request.

SPIROL specializes in the low-volume manufacture of specialty Machined Nuts up to .750” (19mm) in hexagonal and .812” (21mm) round configurations.

Special Threads Precision Nuts can be machined with any inch or metric thread to ANSI H.28 or JIS standard, left or right-hand pipe threads, ANSI B1.1, ANSI B1.13M.

Special Materials In addition to the standard brass, SPIROL’s production technology enables us to produce Machined Nuts out of a variety of materials. The most common alternate materials are aluminum and 300 series austenitic stainless steel; however we also produce low volume Nuts out of 12L14 low carbon steel. Machined Nuts made from alternate materials are made to order in low volume.

Special Finishes SPIROL can provide virtually any finish on Machined Nuts. Standard finishes are plain and bright nickel plated. Alternate finishes include passivated, black oxide, zinc plate, zinc plate with chromate (in clear, yellow, olive or black color), bright acid tin, and phosphate coated.

Special Surface Configuration SPIROL can machine products with multiple diameters, grooves, knurls, threads, chamfers, heads, center holes, side holes, as well as those that are turned, shaved, broached, back drilled, and counterbored. In addition, Knurled Thumb Nuts can be provided with optional “face” knurls help lock the parts in place.

8 APPLICATION ENGINEERING IN PRACTICE

Machined Hex Nut in Wheel Chair

Application: A customer contacted SPIROL with an axle-alignment problem that they were having with a wheel chair. The application was a solid axle passing through the center hub of a wheel. The axles are cambered, causing extra stress for nuts that are not square to the threaded bolt. The conventional stamped nut was causing deflection in the axle when tightened due to the threads of the nut not being formed With Conventional Stamped Nut perpendicular to the faces of the nut. This deflection was causing poor tracking.

Solution: SPIROL’s solution was a Machined Hex Nut manufactured to the same specifications, but machined in one step from raw material rather than stamped and then threaded. SPIROL’s manufacturing methods allow for precise control of the cutting tools responsible for the final geometry of the product. In this case, threads running perpendicular to the faces of the nut were a major performance requirement. To the astonishment of the With Precision Machined customer, SPIROL provided a Precision Machined Hex Nut for a price comparable to the price Hex Nut they were paying for a lower-performance product.

Panel Nuts in Toggle Switch

Application: A manufacturer of toggle switches requested that SPIROL manufacture a cost- effective, custom Hex Panel Nut for their European market. This large, special Machined Nut had a 15mm wrench size and a M13 thread.

Solution: SPIROL Engineering recommended the use of a standard SPIROL Series H40 Hex Panel Nut body with a special M13 thread.

SPIROL’s standard Panel Nut has a .625” wrench size, converting to approximately 15.9mm across the flats versus the originally requested 15mm wrench size.The customer was early enough in the design stage to change to the standard .625” wrench size. By using the standard wrench size, SPIROL was able to machine the Nut out of commercially available raw material and standard tooling.

The customer collaborated with SPIROL on the production timing of the part such that SPIROL was able to manufacture the Nut with the custom M13 thread right after the production of the standard Panel Nut on the multi-spindle machine for a total cost savings of 95%!

9 Innovative fastening solutions. Technical Centers Lower assembly costs. Americas SPIROL International Corporation 30 Rock Avenue Danielson, Connecticut 06239 U.S.A. Tel. +1 860 774 8571 Fax. +1 860 774 2048 SPIROL Shim Division 321 Remington Road Stow, Ohio 44224 U.S.A. Tel. +1 330 920 3655 Fax. +1 330 920 3659 Slotted Spring Pins SPIROL West 1950 Compton Avenue, Unit 111 Corona, California 92881 U.S.A. Tel. +1 951 273 5900 Solid Pins & Drive Fax. +1 951 273 5907 Coiled Spring Pins Studs SPIROL Canada 3103 St. Etienne Boulevard Ground Hollow Windsor, Ontario N8W 5B1 Canada Dowels Tel. +1 519 974 3334 Fax. +1 519 974 6550 SPIROL Mexico Carretera a Laredo KM 16.5 Interior E Col. Moisés Saenz Rolled Tubular Apodaca, N.L. 66613 Mexico Components Dowel Bushings / Tel. +52 81 8385 4390 Spring Dowels Fax. +52 81 8385 4391 SPIROL Brazil Rua Mafalda Barnabé Soliane, 134 Compression Comercial Vitória Martini, Distrito Industrial Limiters CEP 13347-610, Indaiatuba, SP, Brazil Inserts for Plastics Tel. +55 19 3936 2701 Fax. +55 19 3936 7121 Spacers Europe SPIROL France Cité de l’Automobile ZAC Croix Blandin 18 Rue Léna Bernstein 51100 Reims, France Tel. +33 3 26 36 31 42 Precision Washers Fax. +33 3 26 09 19 76 Precision Shims & Precision Machined SPIROL United Kingdom Nuts Thin Metal Stampings 17 Princewood Road Corby, Northants NN17 4ET United Kingdom Tel. +44 1536 444800 Fax. +44 1536 203415 SPIROL Germany Brienner Strasse 9 80333 Munich, Germany Tel. +49 931 454 670 74 Disc Springs Fax. +49 931 454 670 75 SPIROL Spain 08940 Cornellà de Llobregat Barcelona, Spain Tel. +34 93 193 05 32 Fax. +34 93 193 25 43 SPIROL Czech Republic Insert Installation Sokola Tůmy 743/16 Technology Ostrava-Mariánské Hory 70900 Pin Installation Parts Feeding Czech Republic Technology Technology Tel/Fax. +420 417 537 979 Asia SPIROL Asia Headquarters Please refer to www.SPIROL.com for the most current specifications and standard offering. Pacific 1st Floor, Building 22, Plot D9, District D Printed materials may be out of date. No. 122 HeDan Road Wai Gao Qiao Free Trade Zone SPIROL Application Engineers will review your application needs and work with Shanghai, China 200131 your design team to recommend the best solution. One way to start the process Tel. +86 21 5046 1451 Fax. +86 21 5046 1540 is to visit our Optimal Application Engineering portal at www.SPIROL.com. SPIROL Korea ISO/TS 16949 Certified 160-5 Seokchon-Dong ISO 9001 Certified e-mail: [email protected] Songpa-gu, Seoul, 138-844, Korea Tel. +86 (0) 21 5046-1451 SPIROL Fax. +86 (0) 21 5046-1540 © 2014 SPIROL International Corporation 04/14 .com