1、NASM 85353-2000 Nuts (Fasteners),Internally Threaded,Preload Locking,450F,800F and 1200F,General Specification for_85353 ADOPTION NOTICE NASM85353, NUTS (FASTENERS) , INTERNALLY THREADED, PRELOAD LOCKING, 450 F, 800 F AND 1200 F, GENERAL SPECIFICATION FOR If, was adopted on 20 JUNE 2000 for use by t
2、he Department of Defense (DoD). Proposed changes by DoD Activities must be submitted to the DoD Adopting Activity: Defense Supply Center Philadelphia, ATTN: DSCP-ILEA, 700 Robbins Avenue, Philadelphia, PA 19111-5096. DoD Activities may obtain copies of this standard from the Standardization Document
3、 Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094. The private sector and other Government agencies may purchase copies from the AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC., 1250 EYE STREET, N. W., WASHINGTON, DC 20005-3924. Custodians: Army - MI Navy - AS Air Force - 1
4、1 DLA-IS Adopting activity: DLA-IS (Project 5310-2651-002) AMSC NIA FSC 5310 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. NATIONAL AEROSPACE STANDARD O COPYRIGHT 2000 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC. ALL RIGHTS RESERVED NASM85353 SPECIFICATION NU
5、TS (FASTENERS), INTERNALLY THREADED, PRELOAD LOCKING, 450F, 800F AND 1200F, GENERAL SPECIFICATION FOR 1. SCOPE 1.1 Scope. This specification covers the requirements for preload locking nuts (hereinafter referred to as internally threaded fasteners) to be used in applications where temperatures will
6、not exceed 450F, 800F and 1200F. 1.2 Classification. Fastener threads shall be classified as follows: Type I - 450F Type II - 1200F Type III - 800F 2. APPLICABLE DOCUMENTS 2.1 Specifications, Standards and Handbooks. Unless othetwise specified, the following specifications, standards and handbooks o
7、f 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 specification to the extent specified herein. SPECIFICATIONS FEDERAL QQ-P-416 - Plating, Cadmium (Electrodeposited). PPP-H-1581 - Hard
8、ware (Fasteners and Related Items) Packaging and Packing for Shipment and Storage. THE INITIAL RELEASE OF THIS DOCUMENT SUPERSEDES MIL-N-85353, AMENDMENT 2. LIST OF CURRENTSHEETS NO. REV NEW 9 NEW 4 NEW 8 NEW 3 NEW 7 NEW 2 NEW 6 NEW 1 REV NO. 5 , NEW 10 NEW SHEET i OF 10 FSC 5310 APPROVAL DATE MARCH
9、 2000 USE OF OR RELIANCE UPON MIS DOCUMENT OR ANY NATIONAL AEROSPACE STANDARD IS ENTIRELY VOLUNTARY. AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER NATIONAL AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) ME SUITABILITY OF ITEMS FOR ANY PARTICU
10、LAR APPLICATION, OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS REVISION -,-,-STD.AIA/NAS NASM85353-ENGL 2000 9 0338743 0508843 f70 9 NATIONAL AEROSPACE STANDARD O COPYRIGHT 2000 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC. ALL RIGHTS RESERVED NAS85353 SPECIFICAT
11、IONS (Continued) MILITARY MIL-S-8879 - Screw Threads, Controlled Radius Root With Increased Minor Diameter, General Specification for. Ftu, and 30 KSI Ftu. MIL-N-25027 - Nut, Self-Locking, 25OoF, 450F, and 800F, 125 KSI Ftu, 60 KSI STANDARDS MILITARY M IL-STD- 1 05 MIL-STD-129 MIL-STD-794 MIL-STD-13
12、12 MS14194 MS2 1045 MS2 1084 MS2 1296 - Sampling Procedures and Tables for Inspection by Attributes. - Marking for Shipment and Storage. - Parts and Equipment, Procedures for Packaging and Packing of. - Fasteners, Test Methods. - Nuts (Fasteners), Internally Threaded, Preload Locking, 450F, 8OO0F, 1
13、2OO0F, Reliability and Maintainability Design Requirements for. - Nut, Self-Locking, Hexagon-Regular Height, 450F, 125 KSI Ftu. - Nut, Self-Locking, Steel, 200 KSI Ftu, 450F, Flanged. - Bolt, Tension, Steel, 260 KSI Ftu, External Wrenching, Spline Drive, Flanged Head. (Copies of specifications, stan
14、dards, drawings and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other Publications. The following documents form a part of this specification to the extent specif
15、ied herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. AMERICAN NATIONAL STANDARDS INSTITUTE ANSI 846.1 Surface Texture (Surface Roughness, Waviness and Lay). (Application for copies should be addressed to American Society of M
16、echanical Engineers, 345 East 47th Street, New York, NY 10017.) NATIONAL AEROSPACE STANDARDS NAS5002 - Bolt, Pan Head, Close Tolerance Short Thread, Tri-WingR NAS51 02 Bolt, Pan Head, Close Tolerance Short Thread, Tri-WingR Recess, Alloy Steel, Self-Locking and Non-Locking. Recess, A2886 Cres., Self
17、-Locking and Non-Locking. Locking and Non-Locking. Self-Locking and Non-Locking. NAS6603-6612 Bolt, Hex Head, Close Tolerance, Alloy Steel, Long Thread, Self- NAS6703-67 12 Bolt, Hex Head, Close Tolerance, A286 Cres., Long Thread, 2 APPROVAL DATE MARCH 2000 REVISION USE OF OR RELIANCE UPON THIS DOCU
18、MENT OR ANY NATIONAL AEROSPACE STANDARD IS ENTIRELY VOLUNTARY. AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER NATIONAL AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (i) ME SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION, OR (2) THE EXISTENCE
19、OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS NATIONAL AEROSPACE STANDARD O COPYRIGHT 2000 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC. ALL RIGHTS RESERVED NAS85353 (Application for copies of the above publications should be addressed to the Aerospace Industries Association of Ameri
20、ca, Inc, National Aerospace Standards Committee, 1250 Eye Street, NW, Suite 1200, Washington, DC 20005-3922.) 3. REQUIREMENTS 3.1 Specification Sheets. The individual item requirements shall be as specified herein and in accordance with the applicable specification sheets. In the event of any confli
21、ct between requirements of this specification and the specification sheet, the latter shall govern. 3.2 Qualification. The preload locking fastener manufacturer shall be responsible for conducting qualification tests and furnishing part drawings, certified qualification test reports (if required by
22、the purchaser) and test samples. The nuts furnished under this specification shall be produced using the same manufacturing methods as those used to produce nuts that have passed qualification tests. The purchaser may apply any or all tests specified herein to any product represented as meeting this
23、 specification, at any time, to verify conformance. 3.2.1 Retention of Qualification. Requalification will be required in the event any change is made in the product design, construction, materials, method of manufacture, heat treatment, finish, lubricant, or manufacturers part number or designation
24、. 3.3 Materials. Fastener material shall be as specified on the applicable specification sheet. 3.4 Design and Construction. The design and construction of the fastener shall be as specified herein and in accordance with the applicable specification sheets. 3.5 .Lubrication. The fastener may have a
25、coating of dry film lubrication, which meets the lubrication requirements specified in MIL-N-25027. The lubrication shall be applied as shown on the specification sheet, military standard or drawing. 3.6 Dimensions. Dimensions shall be as specified on the applicable specification sheet and are to be
26、 met after plating but before lubrication. Plated dimensions and unplated dimensions are prior to any lubrication. Thread form, dimensions, and gaging shall be as specified in MIL-N-85353/1. 3.7 Plating or Surface Treatment. Type I fasteners fabricated from alloy steel shall be cadmium plated in acc
27、ordance with QQ-P-416, Class 2, Type II, or as shown on the applicable specification sheet. Within one hour after plating, all parts 180 KSI and above shall be baked for not less than 23 hours at 375F f 25F. 3.7.1 1200F and 800F Corrosion-Resistant Steel. The Type II fastener threads fabricated for
28、1200F and Type III fastener threads fabricated for 800 may be silver plated in accordance with AMs241 O or provided with a coating or finish in accordance with the applicable specification sheet. 3.8 Torque. Except for the torque required to preload lock the fastener, the torque required to assemble
29、 the fastener shall be not greater than finger torque (see 4.8). 3.9 Identification of Product. The preload locking fastener shall be identified as indicated on the applicable specification sheet. 3.1 O Mechanical Properties. APPROVAL DATE MARCH 2000 USE OF OR RELIANCE UPON THIS DOCUMENT OR 3 REVISI
30、ON ANY NATIONAL AEROSP ACE STAND ARD IS ENTIRELY V01 JNTARY. AIA DOES NOT QUIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER NATIONAL AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION, OR (2) ME EXISTENCE OF O
31、R APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS -,-,- - - STD. AIAINAS NASfi85353-ENGL 2000 m 0318743 0508845 T43 NATIONAL AEROSPACE STANDARD O COPYRIGHT 2000 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC. ALL RIGHTS RESERVED NAS85353 3.10.1 Stress Corrosion. There shall be no fracture, per
32、manent set or deformation of fastener when subjected to a stress corrosion test (see 4.3.5). 3.10.2 Tensile Strength. Tensile strength of preload locking fastener shall meet the values shown on the applicable specification sheet. Qualification test samples shall meet the tensile strength values spec
33、ified in Table IV (see 4.3.6). 3.10.3 Locking Torque. Locking torque shall not be less than 80% of the seating torque listed in Table V for 50 cycles (see 4.3.7). 3.10.4 Reusability. The threads shall show no distortion or scratches when tested in accordance with 4.3.8. 3.10.5 Vibration. There shall
34、 be no malfunction or deterioration of the fastener when subjected to the vibration test (see 4.3.9). The vibration test is not required for size .1640-32 and sizes larger than .5000-20. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection. Unless otherwise specified in the contract, th
35、e contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract, the contractor may use his own or any other facilities suitable for.the performance of the inspection requirements specified herein, unless disapproved b
36、y the procuring activity. The procuring activity reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.2 Classification of Inspection. The inspection requir
37、ements specified herein are classified as follows: a. Qualification inspection (see 4.3) b. Quality conformance inspection (see 4.6) 4.3 Qualification Inspection. Qualification inspection shall consist of all the examinations and tests listed in Table I. TABLE I. Qualification inspections. Requireme
38、nt Inspection Paragraph Visual examination Stress corrosion (3 samples) 3.10.2 Tensile strength (5 samples) 3.10.1 3.10.5 Vibration (1 O samples) 3.10.4 Reusability (1 O samples) 3.10.3 Locking torque (1 O samples) Test Method Paragraph 4.7 4.3.5 4.3.6 4.3.7, 4.6.3 4.3.8, 4.6.3 4.3.9 4.3.1 Qualifica
39、tion samples. Test samples shall be of the same material and manufactured by the same method as production parts. The number of nuts to be subjected to qualification tests shall be 4 APPROVAL DATE MARCH 2000 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY NATIONAL AEROSPACE STANDARD IS ENTIRELY VOLUNTA
40、RY. AIA DOES NOT REVISION QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER NATIONAL AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) ME SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION, OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK
41、 RIGHTS NATIONAL AEROSPACE STANDARD O COPYRIGHT 2000 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC. ALL RIGHTS RESERVED NAS85353 sufficient to perform the tests identified in Table I. The fastener specimens shall contain the thread form specified in MIL-N-8535311. Bolts shall conform to Table II
42、of this specification. 4.3.1.1 Similarity (fine and coarse threads). Qualification approval of the fine thread series shall constitute qualification approval of the coarse thread series for the same diameter. TABLE II. Bolt Requirements for Qualification Tests. UNJF3A Bolt Standard I/ and Pitch Type
43、 I Type II Type III Thread Diameter .1640-32 NAS5002 NAS5 102 .1900-32 NAS6603 NAS6703 MS21296-03 .2500-28 NAS6604 NAS6704 MS21296-04 .3 125-24 NAS6605 NAS6705 MS21296-05 .3750-24 NAS6606 NAS6706 MS21296-06 .4375-20 NAS6607 NAS6707 MS2 1296-07 .5000-20 NAS6608 NAS6708 MS21296-08 .5625-18 NAS6609 NAS
44、6709 MS21296-09 .6250-18 NAS661 O NAS671 O MS21296-10 .7500-16 NAS661 2 NAS671 2 MS21296-12 - 1/ Bolts of the same strength level and thread dimensions may be used in lieu of specified bolts. 4.3.2 Inspection Routine. For qualification testing, the internally threaded fastener shall conform to the d
45、imensional limits of MS21045 for Type I and II fastener threads; and MS21084 for Type III fastener threads except that there shall be no prevailing locking element. The nut height shall be the maximum height specified on the above standards +.O00 and -.O1 O. 4.3.3 Certified Test Report. The manufact
46、urer shall maintain on file a certified test report showing that the manufacturers product satisfactorily conforms to this specification. The test report shall include, as a minimum, actual results of the tests specified herein. A complete description and name of lubricating material used on the nuts shall be furnished. The manufacturer shall also maintain a dated drawing that completely describes the manufacturers product. The drawing shall specify all dimensions and toleranc
