1、_ SAE Technical Standards BoarG5XOHVSURYLGHWKDW7KLVUHSRUWLVSXEOLVKHGE6$(WRDGYDQFHWKHVWDWHRIWHFKQLFDODQGHQJLQHHULQJVFLHQFHV7KHXVHRf this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringemenWDULVLQJWKHUHIURPLVWKHVROHUHVSRQVLELOLWR
2、IWKHXVHU 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 2013 SAE International All rights reserved. No part of this publication may be reproduced, stored i
3、n 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: +1 724-776-4970 (outside USA) Fax: 724-776-0790 Emai
4、l: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J2596_201308 SURFACE VEHICLE STANDARD J2596 AUG2013 Issued 2004-10 Revised 2013-08 Superseding J2596 OCT2004 Fastener P
5、art Standard - Tapping Screws and Metallic Drive Screws (Inch Dimensioned) RATIONALE All references to ASME B18.6.4 and SAE J81 have been replaced by reference to ASME B18.6.3 that now covers tapping screws. For quality assurance, ASME B18.18 has replaced ASME B18.18.2. Other major changes are in re
6、gard to Field 2 and 3 of Figure 1. In Field 2, specific designators have been added for a number of thread types and points. In Field 2, the ASTM C 1513 configuration was deleted as the threads were not adequately defined in the standard. In Field 3, the PIN designator now provides diameters and thr
7、eads for the configurations added in Field 2. In addition, dimensions are provided for the 5/16 and 3/8 size Type U screws. In 4.3.b, The PIN designator in Field 5 for length now utilizes three characters for lengths over six inches. Steel tapping screws with induction hardened ends per GM 6202M (ma
8、terial designator G4) are now inactive for new design. Additional coating options have been added to Field 7 and 4.5.3 for electro-deposited coatings has been revised. The procedure for measuring straightness has been changed from IFI-138 to ASME B18.2.9. IFI-113 is now listed as an alternative to S
9、AE J78 and core hardness requirements for these products have been modified. Minor non-technical changes have been incorporated. Note 5.6 has been modified and Note 5.8 added. Appendix A has been updated. TABLE OF CONTENTS 1. SCOPE 2 1.1 Purpose . 2 1.2 Tapping Screws and Metallic Drive Screw Part N
10、umbers . 2 1.3 Safety - Hazardous Materials 2 2. REFERENCES 3 2.1 Applicable Documents 3 2.2 Other Publications . 4 3. DEFINITIONS . 4 4. TAPPING SCREW REQUIREMENTS 5 4.1 Tapping Screw Materials and Dimensions 5 4.2 Part Identification Numbers (PINs) for Selected Tapping and Metallic Drive Screws .
11、5 4.3 Dimensional Requirements for Screws . 5 4.4 Materials 9 4.5 Coating Requirements 10 4.6 Straightness 11 4.7 Quality Assurance . 11 4.8 Marking Requirements 13 5. NOTES 13 5.1 Intended Use . 13 5.2 Identification of Part Numbering System on Drawings 13 SAE J2596 Revised AUG2013 Page 2 of 17 5.3
12、 Magnetic Permeability . 13 5.4 Selection Guidance . 14 5.5 Hole Sizes and Tightening Torques for Tapping Screws 15 5.6 Other Tapping Screw Standards . 15 5.7 Relocation of ASME B18 Requirements for Tapping Screws . 15 5.8 Marginal Indicia . 16 APPENDIX A OTHER TAPPING SCREW STANDARDS . 17 FIGURE 1
13、PART IDENTIFICATION NUMBERS FOR TAPPING AND METALLIC DRIVE SCREWS (INCH DIMENSIONED) . 6 TABLE 1 MECHANICAL PROPERTY REQUIREMENTS OF TAPPING AND DRIVE SCREW MATERIALS . 9 TABLE 2 OUT-OF-STRAIGHTNESS LIMITS FOR TAPPING SCREWS AND METALLIC DRIVE SCREWS 11 TABLE 3 DESIGNATED INSPECTION CHARACTERISTICS
14、AND INSPECTION LEVELS 12 TABLE A1 OTHER ACTIVE TAPPING SCREW PART STANDARDS 17 1. SCOPE This SAE Part Standard covers selected inch dimensioned tapping screws and metallic drive screws manufactured in accordance with American Society for Mechanical Engineers dimensional standards. This SAE standard
15、covers material most often used in ship systems and equipment but its use may be applied wherever fasteners of the covered materials are used. This standard permits the fasteners to be identified and ordered by a Part Identification Number (PIN) as defined in this standard. 1.1 Purpose The purpose o
16、f this document is to assist the designer and other personnel in providing requirements and Part Identification Numbers (PINs) for the most commonly used tapping and metallic drive screws. A PIN is normally required for all military applications and provides a useful means of communicating screw req
17、uirements to suppliers and manufacturers in a very succinct manner. 1.2 Tapping Screws and Metallic Drive Screw Part Numbers This document provides PINs that can be used to identify the screws covered by this standard. The parts covered by this standard are manufactured in accordance with materials
18、and processes identified in applicable standards issued by ASME, ASTM, IFI and SAE. The PIN identifies the type thread and point, nominal diameter, head style and drive, nominal length, fastener material, and finish (coating). 1.3 Safety - Hazardous Materials While the materials, methods, applicatio
19、ns, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards that may be involved in such use. It is the responsibility of manufacturers and users to consult with officials on the applicable health and env
20、ironmental regulations regarding the handling, use and disposal of hazardous materials. For fasteners, some of the hazardous materials concerns are the application of the materials in platings (coatings), release of toxic vapors due to heat (for example, welding) and environmental regulations for di
21、sposal. SAE J2596 Revised AUG2013 Page 3 of 17 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications shall apply except in those cases where an invitation fo
22、r bid or procurement contract specifically identifies the issues in effect on a particular date. 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 724-776-4970 (outside USA), www.sae.org. SAE AMS24
23、85 Coating, Black Oxide 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 J78 Steel Self-Drilling Tapping Screws 2.1.2 ASME Publications Available from the American Societ
24、y of Mechanical Engineers, 22 Law Drive, P.O. Box 2900, Fairfield, NJ 07007-2900, Tel: 973-882-1170, www.asme.org. ASME B18.2.9 Straightness Gage and Gaging for Bolts and Screws ASME B18.6.3 Machine Screws, Tapping Screws, and Metallic Drive Screws (Inch Series) ASME B18.12 Glossary of Terms for Mec
25、hanical Fasteners ASME B18.18 Quality Assurance for Fasteners 2.1.3 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 A 342/A 342M Standard Test Methods for Permeability of Feebly Magnetic
26、 Materials ASTM A 380 Standard Practice for Cleaning, Descaling and Passivation of Stainless Steel Parts, Equipment, and Systems ASTM F 1136 Zinc/Aluminum Corrosion Protective Coating for Fasteners ASTM F 1137 Phosphate/Oil; and Phosphate/Organic Corrosion Protective Coatings for Fasteners ASTM F 14
27、70 Fastener Sampling for Specified Mechanical Properties and Performance Inspection ASTM C 1513 Steel Tapping Screws for Cold Finished Steel Framing ASTM F 1789 Standard Terminology for F16 Mechanical Fasteners ASTM F 1941 Electrodeposited Coatings on Threaded Fasteners (Unified Inch Screw Threads (
28、UN/UNR) SAE J2596 Revised AUG2013 Page 4 of 17 2.1.4 Department of Defense Publications Available from the Document Automation and Production Service (DAPS), Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, Tel: 215-697-6257, http:/quicksearch.dla.mil/. MIL-DTL-13924 Coating, Oxide, Bl
29、ack, for Ferrous Materials MIL-DTL-16232 Phosphate Coating, Heavy, Manganese or Zinc Base 2.1.5 General Motors Engineering Standards Available from IHS Global Engineering Documents, 15 Inverness Way East, Englewood, CO 80112, Tel: 877-413-5184, . GM6202M Material and Performance Requirements For Ind
30、uction Hardened Type TR (Thread Rolling) Tapping Screws (Inactive for new design) 2.2 Other Publications 2.2.1 IFI Publications Available from Industrial Fasteners Institute, 6363 Oak Tree Boulevard, Independence, OH 44131, Tel: 216-241-1482, www.indfast.org. IFI Publication Inch Fastener Standards
31、Section H - An Introduction to Tapping Screws IFI-113 Steel Self-Drilling Tapping Screws 3. DEFINITIONS For fastener terms not defined herein, the definitions of ASME B18.12 shall apply. If the definitions are not identified in ASME B18.12 the definitions of ASTM F 1789 shall apply. 3.1 TAPPING SCRE
32、WS 7KUHDGHGIDVWHQHUVZLWKWKHFDSDELOLWWRFUHDWHWDSPDWLQJWKUHDGVZKHQGULYHQLQWRSUHIRUPHGKROHVLQPHWDOOLFDQGQRQ-metallic materials. 3.2 THREAD FORMING TAPPING SCREWS These screws form their mating internal thread by displacing material adjacent to a pre-formed hole and pushing it into the open spaces betwe
33、en the threads of the tapping screw. Generally, thread forming screws are suitable in only thin sections of malleable material. 3.3 THREAD CUTTING TAPPING SCREWS These screws have cutting flutes or edges at their point that permit the screws to act as a tap to cut their own mating threads when drive
34、n into a preformed hole. SAE J2596 Revised AUG2013 Page 5 of 17 3.4 THREAD ROLLING TAPPING SCREWS These screws have specially designed threads that allow the screw to form a mating internal thread by applying LQWHUPLWWHQWSUHVVXUHVDWWKHFUHVWRIWKHVFUHZVWKUHDGUDWKHUWKDQRYHUWKHIXOOWKUHDGIODQN)ULFWLRQDOU
35、HVLVWDQFHLVsignificantly lower than for thread forming screws and thus the screws are suitable for driving into thicker section and provide greater joint strength and integrity. For this standard, threads shall be coarse machine screw threads in the nominal sizes as identified in ASME B18.6.3. Self-
36、Drilling Tapping Screws These screws eliminate the need for a preformed hole by drilling, tapping, and fastening in a single operation. 3.5 METALLIC DRIVE SCREW (Type U) A hardened screw with a blunt point and multiple thread starts with a helix angle of 45 to 65 degrees. It is used with a clearance
37、 hole in one of the parts to be fastened and designed for installation by impact in hole sizes as recommended in ASME B18.6.3. 4. TAPPING SCREW REQUIREMENTS 4.1 Tapping Screw Materials and Dimensions This screw part standard utilizes ASME dimensional standards for screws and primarily SAE and ASTM s
38、tandards for materials and coatings. 4.2 Part Identification Numbers (PINs) for Selected Tapping and Metallic Drive Screws PINs are provided herein for selected tapping and drive screws for the purpose of common logistics parts identification between designers, fastener manufacturers, construction a
39、nd repair activities, and equipment operators. PINs are provided for only those screw configurations and materials most likely to be needed for ship systems and equipment. Figure 1 provides part identification numbers for selected tapping and metallic drive screws. The PIN consists of a number of fi
40、elds in order as identified in Figure 1. (There are no blank spaces in the PIN.) The next to last field in the PIN, Field 6, designates the screw material. Table 1 lists the material designators for Field 6 of the PIN along with the chemical and mechanical properties of the material. 4.3 Dimensional
41、 Requirements for Screws The dimensional requirements for a particular tapping or drive screw configuration are to be as shown in ASME B18.6.3 Head dimensions shall be as shown in ASME B18.6.3. Thread and point dimensions for thread rolling, self-drilling and thread cutting screws shall be in accord
42、ance with the applicable product standard. 4.3.1 Lengths of Screws Length tolerances for inch dimensioned tapping and metallic drive screws shall be in accordance with ASME B18.6.3 as applicable. 4.3.2 Diameters of Screws Diameters shall be restricted to those identified in the applicable product st
43、andard. 4.3.3 Thread Types Thread types and fits shall be restricted to those identified herein and permitted in the applicable dimensional standard. All WDSSLQJVFUHZVZLWKWKHOHWWHU%LQWKHLUWSHGHVLJQDWLRQKDYHVSDFHGWKUeads with a greater helix angle than machine threads. Machine threads approximate the
44、 60q threads of the Unified Thread form of the fine and coarse thread series. SAE J2596 Revised AUG2013 Page 6 of 17 J2596 AB 08 SF 121G1 Z PART IDENTIFICATION NUMBER (PIN) SYSTEM Field 7 Coatings Field 6 Material Field 5 Nominal Length Field 4 Head Style and Drive Field 3 Nominal Size (Diameter) Fi
45、eld 2 Thread and Point Type Field 1 SAE Standard 1For lengths over six inches use three digits. See Field 5. Field 1 J2596 Field 2 Thread and Point Type Field 2 ASME B18.6.3 Types (See 4.4 and 5.4 for selection guidance) AB Type AB Thread Forming Tapping Screw - Spaced Threads AR Type ABR Thread For
46、ming Tapping Screw - Spaced Threads BB Type B Thread Forming Tapping Screw - Spaced Threads BP Type BP Thread Forming Tapping Screw - Spaced Threads BF Type BF Thread Cutting Tapping Screw - Spaced Threads BT2Type BT Thread Cutting Tapping Screw - Spaced Threads DC3Type D Thread Cutting Tapping Scre
47、w - Coarse Thread DF3Type D Thread Cutting Tapping Screw - Fine Thread FC3Type F Thread Cutting Tapping Screw - Coarse Thread FF3Type F Thread Cutting Tapping Screw - Fine Thread GC3Type G Thread Cutting Tapping Screw - Coarse Thread GF3Type G Thread Cutting Tapping Screw - Fine Thread TC3Type T Thread Cutting Tapping Screw - Coarse Thread TF3Type T Thread Cutting Tapping Screw - Fine Thread NOTES: 2 Previously t
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