SAE J 2656-2016 Fastener Part Standard - Hexagon Socket Square Head and Slotted Headless Set Screws - Inch Dimensioned.pdf

1、 _ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising ther

2、efrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2016 SAE International All rights reserved. No part of this

3、publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-49

4、70 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit HTTP:/STANDARDS.SAE.ORG/J2656_201611 SURFACE VEHICLE STANDARD J2656 NOV2016 Issued 2003-09 Revised 2016-11 Superseding

5、 J2565 JAN2010 Fastener Part Standard - Hexagon Socket, Square Head, and Slotted Headless Set Screws - Inch Dimensioned RATIONALE Section 2: Added and deleted reference documents. Figure 1: Field 8 Designator A deleted; Designator AH added; Designator B revised to note MIL-DTL-13924; Designator M4 d

6、eleted; Designator M added; Designator X3, X6, Y3 and Y6 deleted. Designator X added; Designator Z revised to note the option of ZA or ZC; Designator ZA and ZC added; Designator Z1, Z2, Z3 and Z4 deleted; Designator F added; Designator N added; Designator S added. Table 1: Updated to reflect hardnes

7、s requirements for non-ferrous set screws (ASTM F3042). Section 4: Revised coating notes due to coating changes. Reference document/requirements of F3042 added. Added six dot self-locking marking requirements for set screws greater than 3/8 inch. Section 5: Revised Black Oxide Caution Statement. 1.

8、SCOPE This SAE Part Standard covers selected inch dimensioned set screws manufactured in accordance with American Society for Mechanical Engineers dimensional standards. This SAE standard covers material most often used in ship systems and equipment but its use may be applied wherever fasteners of t

9、he covered materials are used. This standard permits the fasteners to be identified and ordered by a part identification number (PIN) as defined in this document. 1.1 Purpose The purpose of this document is to assist the designer and other personnel in providing requirements and PINs for the most co

10、mmonly used set screws for ship systems and equipment. A PIN is normally required for all military applications and provides a useful means of communicating set screw requirements to suppliers and manufacturers in a very succinct manner. 1.2 Set Screw PINs This document provides PINs that can be use

11、d to identify set screws covered by this standard. The fasteners covered by this standard are manufactured in general accordance with materials and processes identified in standards issued by ASTM. The PIN identifies the thread form, type of head, type of drive, nominal diameter, special features (p

12、lating, locking elements), nominal length and fastener material. SAE INTERNATIONAL J2656 NOV2016 Page 2 of 13 1.3 Procurement Specification Safety - Hazardous Materials While the materials, methods, applications, and processes described or referenced in this specification may involve the use of haza

13、rdous materials, this specification does not address the hazards that may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of a

14、ll personnel involved. Certain elements and their compounds are considered hazardous or toxic materials by the United States (US) Environmental Protection Agency (EPA) and Occupational Safety and Health Agency (OSHA.) Users of these materials should consider special disposal and human exposure requi

15、rements in Title 40. Protection of the Environment, from the Code of Federal Regulations, and the special handling requirements invoked in Title 29, Occupational, Safety and Health, from the Code of Federal Regulations, respectively, and others as applicable. State and Local regulations may also app

16、ly. Some of the examples of certain elements and compounds are the following: mercury, boron, chromium, lead, silver, barium, cadmium and selenium. 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise ind

17、icated, the latest issue of SAE publications shall apply. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. SAE AMS2412 Plating, Silver Copper Strike, Lo

18、w Bake SAE AMS2487 Anodic Treatment of Titanium and Titanium Alloys - Solution pH 12.4 Maximum SAE AMS2488 Anodic Treatment - Titanium and Titanium Alloys - Solution pH 13 or Higher SAE AS1701 Lubricant, Solid Film SAE J2270 Ship Systems and Equipment - Threaded Fasteners - Inspection, Test, and Ins

19、tallation Guidance SAE J2280 Ship Systems and Equipment - Fasteners - Selection and Identification Requirements 2.1.2 AIA Publication Available from Aerospace Industries Association, 1000 Wilson Boulevard, Suite 1700, Arlington, VA 22209-3928, Tel: 703-358-1000, www.aia-aerospace.org. NAS1283 Fasten

20、ers, Male Threaded, Self-Locking 2.1.3 ASME Publications Available from ASME, P.O. Box 2900, 22 Law Drive, Fairfield, NJ 07007-2900, Tel: 800-843-2763 (U.S./Canada), 001-800-843-2763 (Mexico), 973-882-1170 (outside North America), www.asme.org. ASME B1.1 Unified Inch Screw Threads (UN and UNR Thread

21、 Form) ASME B18.3 Socket Cap, Shoulder, and Set Screws, Hex and Spline Keys (Inch Series) ASME B18.6.2 Slotted Head Cap Screws, Square Head Set Screws, and Slotted Headless Set Screws (Inch Series) ASME B18.12 Glossary of Terms for Mechanical Fasteners ASME B18.18 Quality Assurance for Fasteners SAE

22、 INTERNATIONAL J2656 NOV2016 Page 3 of 13 2.1.4 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org ASTM A342/A342M Standard Test Methods for Permeability of Weakly Magnetic Materials ASTM A380/A

23、380M Cleaning, Descaling and Passivation of Stainless Steel Parts, Equipment, and Systems ASTM A453/A453M High-Temperature Bolting, with Expansion Coefficients Comparable to Austenitic Stainless Steels ASTM B580 Anodic Oxide Coatings on Aluminum ASTM F788/F788M Surface Discontinuities of Bolts, Scre

24、ws, and Studs, Inch and Metric Series ASTM F880 Stainless Steel Socket, Square Head, and Slotted Headless-Set Screws ASTM F912 Alloy Steel Socket Set Screws ASTM F1136/F1136M Zinc/Aluminum Corrosion Protective Coatings for Fasteners ASTM F1470 Fastener Sampling for Specified Mechanical Properties an

25、d Performance Inspection ASTM F1789 Terminology for F16 Mechanical Fasteners ASTM F1941/F1941M Electrodeposited Coatings on Mechanical Fasteners, Inch and Metric ASTM F2833 Corrosion Protective Fastener Coatings with Zinc Rich Base Coat and Aluminum Organic/Inorganic Type ASTM F3042 Nonferrous Hex S

26、ocket, Slotted Headless, and Square Head Set Screws 2.1.5 U. S. Government Publications Copies of these documents are available online at http:/quicksearch.dla.mil. MIL-DTL-13924 Coating, Oxide, Black, For Ferrous Materials MIL-DTL-16232 Phosphate Coating, Heavy, Manganese or Zinc Base MIL-DTL-83488

27、 Coating, Aluminum, High Purity 2.1.6 International Standards Publications (ISO) Available from the American National Standards Institute (ANSI) at www.ansi.org or from the ISO national member for your country. A list of members and their contact information is available at www.iso.org/iso/home /sto

28、re ISO 10683 Fasteners - Non-Electrolytically Applied Zinc Flake Coatings ISO 16047 Fasteners - Torque/clamp force testing 3. DEFINITIONS For definition or terms used in this standard see ASME B18.12 and ASTM F1789. In event of a conflict, the definitions in ASME B18.12 take precedence. 3.1 PIN Repr

29、esents part identification number. Part Identification Numbers (PINs) are identified in Figure 1. SAE INTERNATIONAL J2656 NOV2016 Page 4 of 13 4. SET SCREW REQUIREMENTS 4.1 SAE Set Screw Standards This set screw part standard utilizes ASME dimensional standards for set screws and primarily ASTM stan

30、dards for materials. 4.2 Part Identification Numbers (PINs) for Selected Set Screws PINs are provided herein for selected set screws for the purpose of common logistics parts identification between designers, fastener manufacturers, construction and repair activities, and equipment operators. PINs a

31、re provided for only those set screw configurations and materials most likely to be needed for ship systems and equipment. Figure 1 provides PINs for selected set screws. The PIN consists of a number of fields in order as identified in Figure 1. (There are no blank spaces in the PIN.) The next to la

32、st field in the PIN, field 7, designates the set screw material. Table 1 lists the material designators for field 7 of the PIN along with the chemical and mechanical properties of the material. 4.3 Dimensional Requirements for Set Screws The dimensional requirements for a particular set screw config

33、uration are to be as shown in ASME B18.3 and ASME B18.6.2 for inch dimensioned set screws. 4.3.1 Lengths of Set Screws Length tolerances for inch dimensioned set screws shall be in accordance with ASME B18.3 and ASME B18.6.2 as applicable. 4.3.2 Diameters of Set Screws Diameters shall be restricted

34、to those identified in ASME B18.3 and ASME B18.6.2 as applicable. 4.3.3 Thread Types and Fits Thread types and fits shall be restricted to those identified in Field 2 of Figure 1. For screws in accordance with ASME B18.3 the basic diameters per ASME B1.1 (Class 3A GO) shall apply to the finished fas

35、tener whether coated or not coated. Some screw diameters may require undersize threads prior to coating in order to meet 3A GO gage requirements. For screws in accordance with ASME B18.6.2 the threads shall be Class 2A in accordance with ASME B1.1. For screws with additive finish, the size limits of

36、 Class 2A apply before coating, and the thread after coating is subject to acceptance using a basic Class 3A size GO thread gage. SAE INTERNATIONAL J2656 NOV2016 Page 5 of 13 Field 1 SAE J2656 Set Screw Part Standard Field 2 - Thread Form (See 4.3.3 for thread class) C = UNC/UNRC (ASME B1.1)F = UNF/

37、UNRF (ASME B1.1) Field 3 - Nominal Diameter (See 4.3.2 for selection of diameters.) Field 3 UNC UNF Diameter Field 3 UNC UNF Diameter N2 2-56 2-64 0.086 09 9/16-12 9/16-18 0.5625 N3* 3-48 3-56 0.099 10 5/8 - 11 5/8 18 0.625 N4 4-40 4-48 0.112 12 3/4 - 10 3/4 - 16 0.750 N5* 5-40 5-44 0.125 14 7/8 - 9

38、 7/8 14 0.875 N6 6-32 6-40 0.138 16 1 8 1 12 1.000 N8 8-32 8-36 0.164 18 1-1/8 - 7 1-1/8 12 1.125 03 10-24 10-32 0.190 20 1-1/4 7 1-1/4 12 1.250 04 1/4-20 1/4-28 0.250 22 1-3/8 6 1-3/8 12 1.375 05 5/16 5/16-24 0.3125 24 1-1/2 6 1-1/2 12 1.500 06 3/8-16 3/8-24 0.375 28 1-3/4 5 - 1.750 07* 7/16-14 7/1

39、6-20 0.4375 32 2 4-1/2 - 2.000 08 1/2-13 1/2-20 0.500 *These diameters are often not available and should not be used for new design Field 4 - Type of Head H Hex Socket (See ASME B18.3) L Slotted Headless (See ASME B18.6.2) S Square Head (See ASME B18.6.2) Field 5 - Type of Point (See Head Type Dime

40、nsional Standard and 5.4 for additional information.) C Cup Point F Flat Point N Cone Point D Dog Point H Half Dog Point V Oval Point NOTE: Dog Point is not to be specified in Hex Socket configuration (See ASME B18.6.2 for minimum length limitations.) Figure 1 Pins for set screws (inch dimensioned)

41、SAE INTERNATIONAL J2656 NOV2016 Page 6 of 13 Field 6 - Nominal Screw Length Nominal Screw length shall be as identified below: Field 6 Nominal Length Field 6 Nominal Length Field 6 Nominal Length 01 0.06 07 0.44 20 1.25 02 0.13 08 0.50 24 1.50 03 0.19 10 0.63 28 1.75 04 0.25 12 0.75 32 2.00 05 0.31

42、14 0.88 06 0.38 16 1.00 For lengths over 2.00 inches, Field 6 shall be the length in 16ths of an inch. Length tolerances shall be in accordance with the applicable dimensional standard as identified in Field 4. The following length increments are recommended: Length Recommended increments 5 inches 1

43、/2 inch Field 7 Material - (See Table 1 and 4.5 for designator and mechanical property requirements) Field 8 Coatings and Special Features - (See 4.4 and 4.6) NOTE: If no coating or special feature leave blank AH = Aluminum Coating, High purity with Chromate Overcoat (Hexavalent chromium prohibited)

44、 MIL-DTL-83488 (See 4.4.2) B = Black Oxide MIL-DTL-13924 (See 4.4.3) C = Cadmium electroplated ASTM F1941/F1941M (See 4.4.5) D = Dry Film Lubricant SAE AS1701 (See 4.4.4) F = Zinc Flake, Non-electrolytically applied, with topcoat (Chromium prohibited) ISO 10683 (See 4.4.9) K = Manganese Phosphate Co

45、ating MIL-DTL-16232 (See 4.4.6) N = Zinc-nickel Supplier may furnish either designation NA or NC ASTM F1941/F1941M (See 4.4.5) NA = Zinc-Nickel with topcoat (Hexavalent chromium prohibited) ASTM F1941/F1941M (See 4.4.5) NC = Zinc-nickel with yellow topcoat (Hexavalent chromium prohibited) ASTM F1941

46、/F1941M (See 4.4.5) S = Silver Plating SAE AMS2412 (See 4.4.7) X = Zinc/Aluminum Inorganic Coating (No Chromium Permitted) ASTM F1136/F1136M or ASTM F2833 (See 4.4.8) Z = Zinc Electroplate Supplier may furnish either designation ZA or ZC ASTM F1941/F1941M (See 4.4.5) ZA = Zinc with clear topcoat (He

47、xavalent chromium prohibited) ASTM F1941/F1941M (See 4.4.5) ZC = Zinc with yellow topcoat (Hexavalent chromium prohibited) ASTM F1941/F1941M (See 4.4.5) Note 1: If dry film lubricant is used over another coating, list the other coating first, then the dry film lubricant. Example: ZD for dry film ove

48、r zinc electroplating. Special Feature The special features designation always follows the coating designator, if any. L = Self-Locking (See 4.6) Figure 1 Pins for set screws (inch dimensioned) (continued) SAE INTERNATIONAL J2656 NOV2016 Page 7 of 13 Table 1 - Mechanical property requirements for set screw materials Field 7 Designator UNS Designation Name/Material Specification(1)Hardness Additional Requirements A1 UNS A96061 Aluminum 6061-T6 40 - 50 HRB See 4.5.3 A2 UNS A97075 Aluminum 7075-T73 80 - 90 HR