1、NASM 1312-31-1997 紧固件试验方法31 力矩_NASM13 12-3 1 29 August 1997 ADOPTION NOTICE NASM13 12-30, “Fastener Test Methods Method 3 1 Torque” was adopted on 29 August 1997 for use by the Department of Defense OD). Proposed changes by DoD activities must be submitted to the DoD Adopting Activity: Commander, Na
2、val Air Warfare Center Aircraft Division, Code 414100B 120-3 Highway 547, Lakehurst, NJ 08733-5 100. DoD activities may obtain copies of this standard fiom the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 191 1 1-5094. The private sector and other Government
3、 agencies may purchase copies fiom the Aerospace Industries Association, 1250 Eye Street W, Washington, DC 20005. NASM13 12-3 1 Should be used instead of MIL-STD-13 12-3 1 which was cancelled on 29 August 1997. Custodians: Navy - AS Air Force - 11 Army - AV Preparing activity: Navy - AS (Project No.
4、 53GP-0285-3 1) Review Activities: Navy - AS, SH AirForce- 11 Army - AV, AR DLA - IS COPYRIGHT Aerospace Industries Association of America, Inc. (AIA NAS)Licensed by Information Handling ServicesNATIONAL AEROSPACE STANDARD .DCOPYRIGHT 1597 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA. INC ALLRIGHTS R
5、ESERVED I jNASM1312-31 STAI$D . I PRACTICE I . FASTENER TEST METHODS METHOD 31, TORQUE THE INITIAL RELEASE OF THIS DOCUMENT SUPERSEDES MIL-STD-13 12-3 1 DESIGNATION FOR THIS TEST METHOD REMAINS MIL-STD-13 12-3 1 I. , ( I LIST OF CURRENT SHEETS I NO. NEW NEW REV. 11 10 NO. NEW NEW NEW NEW NEW NEW NEW
6、 NEW NEW REV. 9 8 7 6 5 4 3 2 1 FSC 53GP SHEET 1 OF 11 APPROVAL, DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CW
7、M RESPECTING (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS. COPYRIGHT Aerospace Industries Association of America, Inc. (AIA NAS)Licensed by Information Handling Servicesi NATIONAL AEROSPACE STANDARD (DCOPYR
8、IGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, ALL RIGHTS RESERVED I I I I NASM 13 12-3 1 I I i& ; dl: I ,:U I FOREWORD This standard sets forth a standard test method for torque testing threaded fasteners. SHEET 2 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE WON THIS WCUMENT OR ANY AEROSPAC
9、E STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT O
10、R TRADEMARK RIGHTS. COPYRIGHT Aerospace Industries Association of America, Inc. (AIA NAS)Licensed by Information Handling ServicesI NATIONAL AEROSPACE STANDARD COPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, MC ALL RIGHTS RESERVED I III h NASMl3 12-3 1 I I . 6 ; J1: p :U I I TABLE OF CON
11、TENTS Paragraph 1 . 1.1 2 2.1 2.1.1 2.1.2 3 . 3.1 3.2 4 . 4.1 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 5 . 5.1 5.1.1 5.1.2 5.1.3 5.1.4 5.1 . 5 5.1.6 5.1.7 5.1.8 5.1.9 5.1.9.1 5.1.9.2 Sheet SCOPE . 5 Applicablllty . 5 . REFERENCED DOCUMENTS . 5 Government documents . 5 Specifications, standards and handbooks .
12、5 Other Government documents, drawings, and publications . 5 DEFINITIONS . 6 Lock area . 6 Torque terms . 6 GENERAL REQUIREMENTS . 6 Torque apparatus . 6 Torque wrenches . 6 Power tools . 6 Torsion machines . 6 Test fixtures . 7 Specimens . 7 DETAIL, REQUIREMENTS . 7 Test procedures . 7 Self-locking
13、 torque . 7 Assembly torque . 7 Mwimurn self-locking torque at installation . .,. , . 7 Brrehvoose torque . 8 BreBkaway torque . 8 .i. i ,il . Mirumum self-locking torque . .I . 8 Multiple tests . 8 Wrench torque . 9 Torque-out . 9 Test to specified proof torque . 9 Ultimate torque test . 9 SHEET 3
14、APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS . AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUITABILITY OF ITEMS FOR ANY PAR
15、TICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS . COPYRIGHT Aerospace Industries Association of America, Inc. (AIA NAS)Licensed by Information Handling ServicesI NATIONAL AEROSPACE STANDARD COPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA,
16、 MC ALL RIGHTS RESERVED 1 I II I 1 ,h ,I NASMl3 12-3 1 d, I .U I TABLE OF CONTENTS (continued) Paragraph Sheet 5.2 Torque test for threaded inserts-intemal threads only . 9 6. NOTES. . .9 6.1 Test Report,. . 9 FIGURE Figure 1. Sheet Test fixture . 1 1 I l 1 ,I. ! I, SHEET 4 APPROVAL DATE AUGUST 1997
17、 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUlTABlLlTY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2)
18、 THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS. COPYRIGHT Aerospace Industries Association of America, Inc. (AIA NAS)Licensed by Information Handling Services1. i NATIONAL AEROSPACE STANDARD BCOPYRIOHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC ALL RIGHTS RESERVE
19、D I! ,I * NASMl3 12-3 1 II 6, i ,L I d, h II SCOPE I 1.1 Applicability. This test method describes the test procedure for determining room temperature transmission and locking torque of threaded fasteners. 2. REFERENCED DOCUMENTS 2.1 Government documents. 2.1.1 Specifications. standards and handbook
20、s. Unless otherwise specified, the following specifications, standards and handbooks of the issue listed in the current Department of Defense Index of Specifications and Standards (DoDISS) and the supplement thereto (if applicable), form a part of this standard to the extent specified herein. SPECIF
21、ICATIONS FEDERAL GGG-W-686 Wrench, Torque MILITARY MIL-T-26639 Tester, Torque Wrench STANDARDS MILITARY MIL-STD- 13 12 Fastener Test Methods 2.1.2 Other Government documents. drawings. and publications. The following other Government documents, drawings, and publications-form a part of this standard
22、 to the extent specified herein. 1 ,$. PURCHASE DESCRIPTION I ,;,. i i il I. I Naval Air Systems Command AS1310 Torque Terms, Definitions of (Application for copies should be addressed to the Commander, Naval Air Systems Command, AIR-5 1 122E, Washington, D.C. 20361 .) SHEET 5 APPROVAL DATE AUGUST 1
23、997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUlTABILXTY OF ITEMS FOR ANY PARTICULAR APPLICATION OR
24、(2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS. COPYRIGHT Aerospace Industries Association of America, Inc. (AIA NAS)Licensed by Information Handling ServicesNATIONAL AEROSPACE STANDARD COPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOClATlON OF AMERICA, INC ALL RIGHTS RESERVED I
25、I NASM13 12-3 1 $1: J II .II (Copies of specificahons, standards, handbooks, drawings and publications required by contractors in connection with specific acquisition hnctions should be obtained from the contracting activity or as directed by the contracting officer.) 3. DEFINITIONS 3.1 Lock area. L
26、ock area is the area where the self-locking feature applies to either the externally threaded or internally threaded member of the fastener. 3.2 Torque terms. Torque terms shall be as defined in AS13 10. 4. GENERAL REQUlREMENTS 4.1 Test auparatus. 4.1.1 Torque wrenches. Torque wrenches shall be in a
27、ccordance with GGG-W-686, Type I, Class 1 and certified to MIL-T-26639. Torque wrenches shall have been calibrated within 12 months for production testing and within 3 months for qualification testing. Torque wrenches shall be selected so that torque values are within twenty percent and ninety perce
28、nt of the torque wrench capacity. If the torque values are not within the limits, the test shall be repeated with an appropriate torque wrench. 4.1.2 Power tools. Pneumatic, reversible drivers shall be calibrated at the beginning of the test to the accuracy specified herein. Power tools shall be adj
29、usted to produce torques as specified in the procurement specification within H inch-pounds or rt5 percent, whichever is greater. The maximum allowable speed shall be 500 rpm. 4.1.3 Torsion machines. Torsion machines shall be accurate within &2 percent. Torsion machines shall have been calibrated wi
30、thin 12 months for production testing and within 3 months for qualification testing. The torque indicating scale of the torsion machine shall be selected so that indicated torquejeadings are within 10 percent and 90 percent of the &ilk! capacity. If the torque values are notwithin the limits, the te
31、st shall be repeated using an apprdpriate scale. SHEET 6 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR C
32、LAIM RESPECTING (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS. COPYRIGHT Aerospace Industries Association of America, Inc. (AIA NAS)Licensed by Information Handling ServicesI NATIONAL AEROSPACE STANDARD COPY
33、RIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA. niC ALL RIGHTS RESERVED Il NASM13 12-3 1 i: O :II 4.1.4 Test fixtures. The construction of the test fixtures shall be such that the torque required to overcome fiction through the wrench holding device does not exceed 1 inch-ounce for wrench ca
34、pacity up to 300 inch-pounds, and 3 inch-ounces for larger wrench capacities. The concentricity between the torquing device and the fastener shall be within 0.010 inch FIM (fidl indicator movement). The plane of the torquing shall be perpendicular to the axis of the fastener within 3 degrees. A typi
35、cal fixture is shown in Figure 1. 4.1.5 SPecimens. The fasteners shall be as specified in the procurement specification. If all the fastener test members are not specified, the fastener elements normally used with the fastener being tested shall be used. Unless otherwise specified, a single fastener
36、 test member shall be used for all cycles of one torque test. Unless specified otherwise, no supplementary lubrication shall be used. Cadmium and silver plating are not considered to be lubricants when used as the final coating. Reduced or selected tolerance test members are not recommended if the t
37、est result does not represent actual application values. 5. DETAIL REQUIREMENTS 5.1 Test procedures. 5.1.1 Self-lockina torque. The fastener elements shall be assembled in a manner that will ensure that the externally threaded member protrusion beyond the internally threaded member lock area (see 3.
38、1) will range fiom a minimum of chamfer breakthrough to a maximum of five thread pitches plus chamfer. Torque shall be applied to the assembly in a manner that will ensure that ali.t$kpe is transmitted to the mating element before axial load is applied. , / I , I 5.1.2 Assemblv torque, When specified in the
