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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 therefr
2、om, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. QUESTIONS REGARDING THIS DOCUMENT: (724) 772-8512 FAX: (724) 776-0243 TO PLACE A DOCU
3、MENT ORDER; (724) 776-4970 FAX: (724) 776-0790 SAE WEB ADDRESS http:/www.sae.org Copyright 1996 Society of Automotive Engineers, Inc. All rights reserved.Printed in U.S.A. SURFACE VEHICLE 400 Commonwealth Drive, Warrendale, PA 15096-0001 STANDARD Submitted for recognition as an American National Sta
4、ndard J2271 ISSUED JUN96 Issued1996-06 SHIP SYSTEMS AND EQUIMENTPART STANDARD FOR STUDS CONTINOUS AND DOUBLE END (INCH SERIES) ForewordThis Document has not changed other than to put it into the new SAE Technical Standards Board Format. 1.Scope 1.1PurposeThis SAE Parts Standard provides dimensional
5、and quality assurance requirements for 1/4 through 2 in sizes of studs in the following configurations in standard materials used for ship system applications: a.Continuous thread studs in UNRC and 8UNR series. b.Double end studs (clamping type) where both ends are of the same thread series (UNRC or
6、 8UN). Also called bolt-studs. (These are suitable for mating with nuts or the set end may be installed with anaerobic thread locking compound.) c.Double end studs (interference thread type) with the nut end having UNRC or 8UNR series thread and where the tap end has NC 5 HFS interference fit thread
7、 forms. Also called a tap end stud. 1.1.1A complete metric companion to this document is provided in SAE J2271M, therefore no metric equivalents are presented. 1.2Field of ApplicationThese studs are primarily for use in ship systems and equipment. The continuous thread studs and the constant strengt
8、h double end studs are configurations particularly suited to applications which are subject to high shock requirements. 1.3Configurations and Part Identification NumbersFigure 1 identifies the type and body configurations of the studs covered by the document. A part numbering system provides a uniqu
9、e part identification number for each stud. The part identification number identifies thread type, diameter, type of stud, body diameter, length of the stud, and material (including coating, where applicable). 2.References 2.1Applicable PublicationsThe following publications form a part of this publ
10、ication to the extent specified herein. Unless otherwise specified, the latest issue of all publications shall apply. NOTEContracts invoking this document may establish an effectivity date for referenced documents. SAE J2271 Issued JUN96 -2- FIGURE 1PART IDENTIFICATION NUMBERS (PINS) FOR CONTINUOUS
11、AND DOUBLE END STUDS (INCH SERIES) SAE J2271 Issued JUN96 -3- 2.1.1SAE PUBLICATIONSAvailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001. SAE AMS 2487Anodic Treatment of Titanium and Titanium Alloys SAE AS1701Lubricant, Solid Dry Film SAE J121Decarburization in Hardened and Tempered
12、Fasteners, Recommended Practice SAE J123Surface Discontinuities of Bolts, Screws, and Studs in Fatigue Applications SAE J2270Ship Systems and Equipment-Threaded FastenersInspection, Test, and Installation Requirements SAE J2271MShip Systems and EquipmentPart Standard For StudsContinuous and Double E
13、nd (Metric) SAE J2280Ship Systems and EquipmentFastenersSelection and Identification Requirements 2.1.2ASME PUBLICATIONSAvailable from ASME, 345 East 47th Street, New York, NY 10017-2392. ASME B1.1Unified Inch Screw Threads (UN and UNR Thread Forms) ASME B1.3MScrew Thread Gaging Systems for Dimensio
14、nal AcceptabilityInch and Metric Screw Threads (UN, UNJ, M and MJ) ASME B1.12Class 5 Interference-Fit Thread ASME B18.18.3MInspection and Quality Assurance For Special Purpose Fasteners 2.1.3ASTM PUBLICATIONSAvailable from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. ASTM A 193/A 1
15、93MSteel Bolting Materials for High-Temperature Service ASTM A 307Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength ASTM A 354Quenched and Tempered Alloy Steel Bolts, Studs and Other Externally Threaded Fasteners ASTM A 449Quenched and Tempered Steel Bolts and Studs ASTM B 633Electrodeposite
16、d Coatings of Zinc on Iron and Steel ASTM B 695Coatings of Zinc Mechanically Deposited on Iron and Steel ASTM F 468Nonferrous Bolts, Hex Cap Screws, and Studs for General Use ASTM F 593Stainless Steel Bolts, Hex Cap Screws, and Studs ASTM F 1470Standard Guide for Fastener Sampling for Specified Mech
17、anical Properties and Performance Inspection 2.1.4U.S. GOVERNMENT PUBLICATIONSAvailable from DODSSP, Subscription Services Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094. QQ-N-286Nickel-Copper-Aluminum Alloy, Wrought MIL-L-46010Lubricant, Solid Film, Heat Cured, Corrosion Inhibit
18、ing 3.Definitions 3.1Body Bound StudsStuds whose body is manufactured to specific close tolerances to ensure a tight or interference fit with the specific equipment being secured, and thus not covered by this document. Also identified as finished, close body studs. 3.2Constant Strength StudsA stud w
19、here the stress area is essentially unchanged throughout the length of the stud. This can be achieved by the use of continuous threads or by providing an undersize body which has a cross-sectional area approximately equivalent to the stress area of the threads. 3.3Double End StudsDouble end studs ha
20、ve threads on each end, typically with an unthreaded body in between. 3.3.1CLAMPING TYPEHas conventional threads on both ends and serves the function of clamping two bodies together with a nut on either end. SAE J2271 Issued JUN96 -4- 3.3.2INTERFERENCE THREAD TYPEHas conventional threads on the nut
21、end and threads on the tap end that will give an interference fit in the hole in which it is installed. 3.4Full or Undersize Body StudsThis category covers a wide range of body diameters that may be furnished when the body diameter is not of particular concern (see 4.2). 3.5LotA lot of fasteners sha
22、ll consist of one heat of material, of one type and style, of the same nominal size and length, and fabricated and heat treated in the same batch or by a continuous process under the same conditions as to time and temperature. 3.6Nut EndThe end or end(s) of the stud to be mated with a nut. (In some
23、cases, stud-bolts which are designed for nuts on each end may be installed with the nut end acting as a set end.) 3.7Set EndThe end of the stud which is not intended for use with a nut but is to be threaded into a piece of material or component. The set end is often secured with an anaerobic compoun
24、d or by interference fit threads (see tap end). 3.8Stud BoltA headless fastener threaded with the same form and fit of thread on both ends or continuously threaded throughout its length. Generally used with a nut on each end. 3.9Tap EndThe end of the stud not intended for use with a nut. Particularl
25、y, an end with interference fit threads. 4.Technical Requirements 4.1Configurations 4.1.1CONTINUOUS THREAD STUDSThe studs are continuously threaded over the entire length with a single thread configuration as shown in Figure 2. 4.1.2DOUBLE END STUD BOLTS AND STUDS 4.1.2.1Double End Stud BoltsThis do
26、cument defines two types: a.Type UDouble End Stud Bolt with Constant Strength Body (see Figure 3) b.Type VDouble End Stud Bolt with Full or Undersize Body (see Figure 3) 4.1.2.2Double End StudsThis document defines two types: a.Type XDouble End Stud with Constant Strength Body (see Figure 4) b.Type
27、YDouble End Stud with Full or Undersize Body (see Figure 4) SAE J2271 Issued JUN96 -5- FIGURE 2CONTINUOUS THREAD STUDS FIGURE 3DOUBLE END STUD BOLTSCLAMPING TYPE (REFER TO TABLE 1 FOR DIMENSIONS) FIGURE 4DOUBLE END STUDSINTERFERENCE FIT TAP END (REFER TO TABLE 2 FOR DIMENSIONS) SAE J2271 Issued JUN9
28、6 -6- 4.2Body Diameter TolerancesThis document covers the following body diameter tolerances. 4.2.1CONSTANT STRENGTH (UNDERSIZE BODY)The body diameter dimension (E in Figures 3 and 4 and Tables 1 and 2) is based on blank diameters before thread rolling with a generous tolerance. 4.2.2FINISHED, FULL,
29、 OR UNDERSIZE BODYThe maximum body diameter shall not exceed the basic major diameter of the thread, the minimum diameter shall not be less than the minimum diameter specified for the constant strength stud. (This permits use of studs with body diameters ranging from those of constant strength studs
30、 up to those of full body studs with a maximum diameter as defined above.) 4.3ThreadsThreads, when rolled, shall be Unified inch coarse or 8 thread series (UNRC, or 8UNR series), Class 2A in accordance with ASME B1.1. Threads produced by other methods shall preferably be UNRC or 8UNR but may be Unif
31、ied inch coarse or 8 thread series (UNC or 8UN series), Class 2A. Interference fit threads shall be NC 5 HFS in accordance with ASME B1.12. 4.3.1THREADS FOR CONTINUOUSLY THREADED STUDSFor diameters 1 in and smaller, threads shall be Unified inch coarse (UNC) Class 2A. For diameters larger than 1 in,
32、 threads shall be Unified inch coarse or 8 thread series (UNC or 8UN), the same as identified in Table 1 for double end studs. Threads shall be in accordance with ASME B 1.1. 4.3.2THREADS FOR DOUBLE ENDBOLT STUDS(BODY TYPES U AND V)Both ends have the same thread form, either UNC or 8UN as designated
33、 by the part number. (See Tables 1 and 2 for selection.) For diameters 1 in and smaller, threads shall be Unified inch coarse (UNC) Class 2A. For diameters larger than 1 in, threads shall be Unified inch coarse or 8 thread series (UNC or 8UN) as identified in Tables 1 and 2. Threads shall be in acco
34、rdance with ASME B 1.1. SAE J2271 Issued JUN96 -7- TABLE 1DIMENSIONS OF DOUBLE END (CLAMPING TYPE) STUDS (1/4 TO 2 IN DIAMETER) Desig- nator Thread Form & Size Nominal Thread Form Nut End Thread D Body Diameter For Constant Strength Studs (For other studs see Figure 1 and 4.2) Max E Body Diameter Fo
35、r Constant Strength Studs (For other studs see Figure 1 and 4.2) Min F Nut End(s) Thread Length For Short Studs Stud Length Min L Nut End(s) Thread Length For Short Studs Full Thread Min F Nut End(s) Thread Length For Short Studs Total Thread Max G Nut End(s) Thread Length For Longer Studs Stud Leng
36、th Min L Nut End(s) Thread Length For Longer Studs Full Thread Min F Nut End(s) Thread Length For Longer Studs Total Thread Max G C025 1/4 -20 UNC0.2200.2121.750.7500.875 6.251.0001.125 C031 5/16-18 UNC0.2780.2712.000.8751.031 6.251.1251.281 C038 3/8 -16 UNC0.3360.3282.251.001.188 6.251.2501.438 C04
37、4 7/16-14 UNC0.3930.3852.501.1251.344 6.251.3751.594 C050 1/2 -13 UNC0.4520.4432.751.2501.500 6.251.5001.750 C056 9/16-12 UNC0.5100.5013.001.3751.656 6.251.6251.906 C063 5/8 -11 INC0.5680.5583.501.5001.812 6.251.7502.063 C075 3/4 -10 UNC0.6870.6774.001.7502.125 6.252.0002.375 C088 7/8 - 9 UNC0.8040.
38、7944.502.0002.438 6.252.2502.688 C1001 - 8 UNC0.9200.9105.002.2502.750 6.252.5003.00 C1131-1/8 - 7 UNC1.0341.0225.502.5003.062 6.252.7503.312 U1131-1/8 - 8 UN1.0461.0345.502.5003.062 6.252.7503.312 C1251-1/4 - 7 UNC1.1591.1476.002.7503.375 6.503.003.625 U1251-1/4 - 8 UN1.1711.1596.002.7503.375 6.503
39、.0003.625 C1381-3/8 - 6 UNC1.2691.2566.503.0003.688 7.003.2503.928 U1381-3/8 - 8 UN1.2961.2846.503.0003.688 7.003.2503.928 C1501-1/2 - 6 UNC1.3941.3817.003.2504.000 7.503.5004.250 U1501-1/2 - 8 UN1.4211.4097.003.2504.000 7.503.5004.250 U1631-5/8 - 8 UN1.5461.5337.503.5004.250 8.503.7504.500 U1751-3/
40、4 - 8 UN1.6721.6587.503.5004.250 9.004.0004.500 U1881-7/8 - 8 UN1.7971.7828.003.7504.50010.004.2505.000 U2002 - 8 UN1.9221.9068.003.7504.50010.004.5005.000 See Notes (1), (2) 1.The number listed is the thread form, “C” for UNC(R) Coarse Threads or “U” for 8UN(R) Threads plus the diameter in hundredt
41、hs of an inch. (See 1.3 and Figure 1 for complete part number.) 2.Size numbers C044 and C056 are not for new design. See Notes (1), (2) See Note (3) 3.It is intended that the body diameter (E) be essentially the same diameter as the blank before thread rolling. The same dimensions also apply for cut
42、 threads. CAUTIONControl of the body diameter to closer dimensions than those shown will normally be required in order to meet thread rolling requirements and the dimensions may vary with the stud material. See Note (3) See Note (4) 4.Studs shorter than the minimum allowed length will not meet the m
43、inimum thread length. If shorter studs are required, use continuously threaded studs. Thread lengths for short studs shall not be used for stud lengths which meet the minimum length for longer studs. See Notes (5), (6) 5.The minimum full thread length is defined in 4.8.1. Imperfect threads shall not
44、 extend more than 2-1/2 threads beyond the full threads. Imperfect threads for the two ends may overlap. 6.See 4.5 for finish of the ends of the stud. See Notes (5), (6) See Notes (5), (6) See Notes (5), (6) See Notes (5), (6) SAE J2271 Issued JUN96 -8- TABLE 2DIMENSIONS OF DOUBLE ENDINTERFERENCE FI
45、T TAP END STUDS (1/4 TO 2 IN DIAMETER) Desig- nator Thread Form & Size Nominal Thread Form Nut End Thread D Tap End NC 5 HFS Threads Thread Length Min A Tap End NC 5 HFS Threads Thread Length Max B Body Diameter For Constant Strength Studs (For other studs see Figure 1 and 4.2) Max E Body Diameter F
46、or Constant Strength Studs (For other studs see Figure 1 and 4.2) Min E Nut End Thread Length For Short Studs Stud Length Min L Nut End Thread Length For Short Studs Full Thread Min F Nut End Thread Length For Short Studs Total Thread Max G Nut End Thread Length For Longer Studs Stud Length Min L Nu
47、t End Thread Length For Longer Studs Full Thread Min F Nut End Thread Length For Longer Studs Total Thread Max G C025 1/4 -20UNC0.3750.5000.2200.2120.7500.8751.256.251.0001.125 C031 5/16-18UNC0.4690.6250.2780.2710.8751.0311.506.251.1251.281 C038 3/8 -16UNC0.5620.7500.3360.3281.0001.1881.756.251.2501
48、.438 C044 7/16-14UNC0.6560.8750.3930.3851.1251.3442.006.251.3751.594 C050 1/2 -13UNC0.7501.0000.4520.4431.2501.5002.256.251.5001.750 C056 9/16-12UNC0.8431.1250.5100.5011.3751.6562.506.251.6251.906 C063 5/8 -11UNC0.9371.2500.5680.5581.5001.8122.756.251.7502.062 C075 3/4 -10UNC1.1251.5000.6870.6771.75
49、02.1253.256.252.0002.375 C088 7/8 - 9UNC1.3121.7500.8040.7942.0002.4383.756.252.2502.688 C100 1 - 8UNC1.5002.0000.9200.9102.2502.7504.256.252.5003.000 C1131-1/8 - 7UNC1.6872.2501.0341.0222.5003.0624.756.252.7503.312 U1131-1/8 - 8UN1.6872.2501.0461.0342.5002.7504.756.252.7503.312 C1251-1/4 - 7UNC1.8752.5001.1591.1474.251.8752.5006.503.0003.625 U1251-1/4 - 8UN1.8752.5001.1711.1594.251.8752.5006.503.0003.625 C1381-3/8 - 6UNC2.0622.7501.2691.2565.002.0622.7506.503.2503.938 U1381-3/8 - 8UN2.06
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