Socket Products Engineering Guide
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Engineering Guide Socket Products A comprehensive catalog of UNBRAKO® socket screws and related products In this catalog you will find complete information about UNBRAKO socket screws and such related products as shoulder screws, dowel pins, pressure plugs and hex keys. Everything you need to select, specify and order these precision products is at your finger tips except actual prices. Furthermore, all data has been organized to let you find the facts you want with the greatest speed and the least effort. Wherever possible, all data for a particular product is presented in a two-page spread for your convenience. Included in this catalog are: UNBRAKO fastener product descriptions Features and technical data about each product Technical discussions for application and use For prices of stock items, see current UNBRAKO fastener price lists or call your local UNBRAKO fastener distributor. For non-stock items, consult your UNBRAKO fastener distributor, or contact the UNBRAKO Engineered Fastener Group by phone at +91 - 161 - 3911111 or by fax on +91 - 161 - 2774400 or Internet at http://www.unbrako.com. Commercial and Government Entity (CAGE) Code 71838 IMPORTANT Referenced consensus standards can change over time. UNBRAKO products are manufactured in accordance with revisions valid at time of manufacture. This guide refers to products and sizes that may not be manufactured to stock. Please consult an UNBRAKO distributor or UNBRAKO to determine stock status. The technical discussions represent typical applications only. The use of the information is at the sole discretion of the reader. Because applications vary enormously, UNBRAKO does not warrant the scenarios described are appropriate for any specific application. The reader must consider all variables prior to using this information. Products modified other than by UNBRAKO are not guaranteed and not subject to return. LIMITED WARRANTY AND EXCLUSIVE REMEDY Unbrako Division warrants that these product conform to industry standards specified herein and will be free from defects in materials and workmanship. THIS WARRANTY IS EXPRESSLY GIVEN IN LIEU OF ANY AND ALL OTHER EXPRESS OR IMPLIED WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, AND IN LIEU OF ANY OTHER OBLIGATION ON THE PART OF Unbrako Group. Unbrako Group will, at its option, repair or replace free of charge (excluding all shipping all shipping and handling costs) any products which have not been subject to misuse, abuse, or modification and which in its sole determination were not manufactured in compliance with the warranty given above. THE REMEDY PROVIDED FOR HEREIN SHALL BE THE EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY OR ANY CLAIM ARISING IN ANY WAY OUT OF THE MANUFACTURE, SALE, OR USE OF THESE PRODUCTS. In no event shall Unbrako Group be liable for consequential, incidental or any other damages of any nature whatsoever except those specifically provided herein for any breach of warranty or any claim arising in any way out of the manufacture, sale, or use of these products. No other person is authorized byUnbrako Group to give any other warranty, written or oral, pertaining to the products. TABLE OF CONTENTS UNBRAKO® Socket Screw Products Page Quick Selector Guide – Inch . 2 Socket Head Cap Screws. Alloy Steel and Stainless Steel. 4 Low Heads – Alloy Steel . 11 Shoulder Screws . Alloy Steel . 12 Flat Head Socket Screws . Alloy Steel and Stainless Steel. 14, 16 Button Head Socket Screws . Alloy Steel and Stainless Steel. 15, 16 Square Head Set Screws . Knurled Cup Point. 17 Socket Set Screws . Alloy Steel and Stainless Steel. 18 Pressure Plugs . Dryseal Pressure Plugs . 24 LEVL-SEAL® Pressure Plugs . 25 PTFE/TEFLON*-coated Levl Seal Pressure Plugs . 26 Dowel Pins . Standard and Pull-Out Type . 28 Hexagon Keys . Short Arm and Long Arm Wrenches . 32 Size Selector Table . 33 Thread Conversion chart . 34 Metric Table of Contents. 35 Metric Socket Head Cap Screws . 38 Metric Flat Head Cap Screws . 40 Metric Button Head Cap Screws . 41 Metric Shoulder Screws . 42 Metric Dowel Pins . 43 Metric Socket Set Screws . 44 Metric Low Head Cap Screws . 46 Metric Hexagon Keys and Size Selector Table . 47 Metric Tolerances . 48 Metric Conversion Chart. 50 Technical Section Table of Contents . 51 NOTE: The proper tightening of threaded fasteners can have a significant effect on their performance. Many application problems such as self-loosening and fatigue can be minimized by adequate tightening. The recommended seating torques listed in the catalog tables serve as guidelines only. Even when using the recommended seating torques, the induced loads obtained may vary as much as ±25% depending upon the uncontrolled variables such as mating material, lubrication, surface finish, hardness, bolt/joint compliance, etc. LEVL-SEAL®, AND UNBRAKO® are registered trademarks of SPS Technologies *Reg. Du Pont T.M. 1 PERFORMANCE (See Note 1) tensile 107 cycle operating psi dynamic temperatures TYPES APPLICATIONS/FEATURES (room temp.) fatigue (psi) (unplated) page 190,000 20,000 550°F COUNTERBORED PROTRUDING Socket Head Cap Screws 1960 Series 4–10 Alloy Steel Use alloy for maximum tensiles; 180,000 up to 190,000 psi, highest of any socket cap screw Socket Head Cap Screws Use stainless for corrosive, cryogenic or elevated tempera- 1960 Series 95,000 30,000 800°F 4–10 ture environments, hygienic Stainless cleanliness. Steel Socket Head Use in parts too thin for standard Cap Screws height heads and where clear- 170,000 20,000 550°F 11 Low Head ance is limited Series Tool and die shear industry standards; heat treat strength also replace costly level psi special parts- in psi Shoulder shafts, pivots, 550°F 12–13 Screws clevis pins, guides, trunnion 160,000 96,000 mountings, link- ages, etc. Uniform, con- trolled 82° under- 160,000 96,000 550°F Flat Head head angle for Socket maximum flush- Screws ness and side wall 14, 16 Alloy/ contact; non-slip Stainless hex socket pre- 800°F vents marring of material Low heads streamline design, 160,000 96,000 550°F Button Head use in materials Cap Screws too thin to coun- 15–16 Alloy/ tersink; also for Stainless non-critical load- ing requiring heat 800°F treated screws NOTE 1: Performance data listed are for standard production items only. Non-stock items may vary due to variables in methods of manufacture. It is suggested that the user verify performance on any non-standard parts for critical applications. 2 INCH QUICK SELECTOR GUIDE PERFORMANCE (See Note 1) operating temperatures TYPES APPLICATIONS/FEATURES hardness (unplated) page Square Head Half-dog or self-locking cup points only. Use where maximum tighten- Rc 45 (min.) 450° F 17 Set Screws ing torques are required Socket Set Fasten collars, sheaves, gears, knobs on shafts. Locate machine Screws Rc 45-53 450°F parts. Cone, half-dog, flat, oval, cup 18–23 Alloy Steel and self-locking cup points standard Socket Set Use stainless for corrosive, cryo- Screws genic or elevated temperatures Rb96-Rc33 800°F 18–23 Stainless environments. Plain cup point stan- Steel dard. Other styles on special order Rc 34-40 550°F Pressure Features common to 3/4” and 7/8” Plugs tapers: Dryseal threads for positive 800°F seal without sealing compound; 24, 26 3/4” Taper controlled chamfer for faster Rb 82 400°F Dryseal starting Typical Brass LEVL-SEAL® plug features: con- Rc 35-40 550°F 7/8” Taper trolled 7/8” tape in 3/4” taper hole LEVL-SEAL® seats plug level, flush with surface 25–27 Pressure Plug within 1/2 pitch. LEVL-SEAL plug is Rb 82 400°F an UNBRAKO original Typical Brass PTFE/TEFLON coated plugs seal at PTFE/ 60% lower seating torques without tape or compound; install faster at 450°F TEFLON** Rc 35-40 26–27 lower cost; smaller sizes can be (uncoated) Coated power installed; LEVL-SEAL plug type for 100% flush seating Tough, ductile, for high torquing; torsional shear accurate fit in all types socket Hex Keys Rc 47-57 in-lb. min. 32–33 screws; size marked for quick identity 1.2 to 276.000 calculated Formed ends, controlled heat treat; Dowel Pins core: shear psi surface close tolerances; standard for die 28–29 (Standard) work; also used as bearings, gages, Rc 50-58 8 micro- precision parts, etc. 150,000 inch (max) For use in blind holes. Easily Dowel Pins removed without special tools. surface: 8 micro- Reusable, Save money. No need for Pull-Out Rc 60 150,000 inch 30–31 knock-out holes. Same physicals, Type finish, accuracy and tolerances as (min.) (max) standard UNBRAKO dowel pins. NOTE 1: Performance data listed are for standard production items only. Non-stock items may vary due to variables in methods of manufacture. It is suggested that the user verify performance on any non-standard parts for critical applications. 3 SOCKET HEAD CAP SCREWS. Why Socket Screws? Why UNBRAKO? The most important reasons for TENSILE STRENGTH AUSTENITIC STAINLESS STEEL the increasing use of socket head STANDARD SERIES Ⅲ U.S. standard alloy steel socket cap screws in industry are safety, head cap screws are made to UNBRAKO stainless socket screws reliability and economy. All three strength levels of 180,000 and are made from austenitic stainless reasons are directly traceable to 170,000 psi to current industry steel. UNBRAKO stainless screws the superior performance of socket standards. However, UNBRAKO offer excellent resistance to rust screws vs. other fasteners, and socket cap screws are consis- and corrosion from acids, organic that is due to their superior tently maintained at 190,000 substances, salt solutions and strength and advanced design. and 180,000 psi (depending on atmospheres. Superior properties Ⅲ Reliability, higher pressures, screw diameter). attained with stainless steel include stresses and speeds in todays retention of a high percentage of Ⅲ The higher tensile strength of machines and equipment tensile strength and good creep UNBRAKO socket screws can demand stronger, more reliable resistance up to 800°F.