1、NASM 8846-1998 Inserts, Screw-thread, Helical Coil_NASM8 84 6 ADOPTION NOTICE NASM8846, IlInserts, Screw-Thread, Helical Coil11, was adopted on 30-JUN-98 for use by the Department of Defense (DoD). Proposed changes by DoD activities must be submitted to the DoD Adopting Activity: Commander, Defense
2、Industrial Supply Center, 700 Robbins Avenue, Philadelphia, PA 19111-5096. DoD activities may obtain copies of this standard from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094. The private sector and other Government agencies may purchase copie
3、s from the Aerospace Industries Association, 1250 Eye Street NW, Washington, DC 20005. Custodians: Army - AV Navy - AS Air Force - 99 DLA - IS Adopting Activities: (Project 5325-0430) DLA - IS FSC 5325 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. c Copyright Aero
4、space Industries Association of America Inc. Provided by IHS under license with AIA/NASNot for ResaleNo reproduction or networking permitted without license from IHS-,-/:#:#$#:$:#*:$#:#NATIONAL AEROSPACE STANDARD 8 COPYRIGHT 1998 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, MC. ALL RIGHTS RESERVED N
5、ASM8846 SPECIFICATION INSERTS, SCREW-THREAD, HELICAL COIL 1. SCOPE 1 .I Scope. This specification covers helical coil screw-thread inserts made from formed wire, the inner surfaces of which, after assembly, provide threads as specified. 1.2 Classification. Inserts shall be of the following types and
6、 classes, as specified (see 6.2). a. Type I - Coarse thread (1) Class 1 - Free running. (2) Class 2 - Screw locking (self-locking). b. Type II - Fine thread (I) Class 1 - Free running. (2) Class 2 - Screw locking (self-locking). c. Type III - Taper pipe thread (1) Class 5 - NPT pipe thread (2) Class
7、 6 - ANPT pipe thread THE INITIAL RELEASE OF THIS DOCUMENT SUPERSEDES MIL-1-8846, REVISION D, AMENDMENT 1, SUPPLEMENT 1. LIST OF CURRENT SHEETS SHEET 1 OF 13 FSC 5325 APPROVAL DATE: MAY 1998 REVISION: USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY NATIONAL AEROSPACE STANDARD IS ENTlRELY VOLUNTARY. AIA
8、 DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER NATIONAL AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CLAIM RESPECTMG (1) T SUITABILITY OF ITEMS FOR AN PARTICULAR APPLICATION, OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS Copyright A
9、erospace Industries Association of America Inc. Provided by IHS under license with AIA/NASNot for ResaleNo reproduction or networking permitted without license from IHS-,-/:#:#$#:$:#*:$#:#NATIONAL AEROSPACE STANDARD O COPYRIGHT 1998 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA. INC. ALL RIGHTS RESERV
10、ED NASM8846 d. Type IV - Metric - spark plug thread (1) Class 3 - Staking (spark plug thread) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified
11、herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS MILITARY MIL-P-7 105 MIL-$8879 STANDARDS FEDERAL FED
12、-STD-H28/2 FED-STD-H28/7 MILITARY MS9018 MS9071 MSI 6997 MS2 1209 MS33.537 MS122076 thru MS122116 thru MS122156 thru MS122115 MS1221.55 MS122195 Pipe Threads, Taper, Aeronautical National Form, Symbol ANPT, General Requirements for Screw Threads, Controlled Radius Root with Increased Minor Diameter,
13、 General Specification for Screw Thread Standards for Federal Services, Section 2, Unified Inch Screw Thread Standards for Federal Services, Section 7, Pipe Threads, General Purpose Insert - 18-1.5 Aviation Spark Plug Helical Coil Bosses, 18-1 SOMM Spark Plug Thread Helical Insert, Standard Dimensio
14、ns for Screw, Cap, Socket Head and Screw Cap Socket Head, Self-Locking, Alloy Steel, Cadmium Plated, UNC-3A Insert, Screw Thread, Coarse and Fine, Screw Locking, Helical Coil, CRES Insert - Screw-Thread, Helical Coil Coarse and Fine Thread, Standard Dimensions for Insert - CRES Helical Coil Coarse T
15、hread, 1 Dia Nominal Length (ASG) Insert - CRES Helical Coil Coarse Thread, 1 - 112 Dia Nominal Length Insert - CRES Helical Coil Coarse Thread, 2 Dia Nominal Length 2 APPROVAL DATE: MAY 1998 REVISION USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY NATIONAL AEROSPACE STANDARD IS ENTIRELY VOLUNTARY. AM
16、DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER NATIONAL AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CLAIM RESPECTlNG (I) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION, OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS Copyrigh
17、t Aerospace Industries Association of America Inc. Provided by IHS under license with AIA/NASNot for ResaleNo reproduction or networking permitted without license from IHS-,-/:#:#$#:$:#*:$#:#STD.AIA/NAS NASMBBYb-ENGL L998 m 0318743 05055b9 Tb2 NATIONAL AEROSPACE STANDARD O COPYRIGHT 1998 AEROSPACE 1
18、NDUSTRlES ASSOCIATION OF AMERICA, INC. ALL RlGHTS RESERVED MS 122 196 thru MS 122236 thru MS122275 MS124651 thru MS 124690 MS 12469 1 thru MS 124730 MS 12473 1 thru MS124770 MS124771 thru MS124810 MS12481 I thru MS124850 MS122235 NASM8846 Insert - CRES Helical Coil Coarse Thread, 2-1/2 Dia Nominal L
19、ength Insert-CRES Helical Coil Coarse Thread, 3 Dia Nominal Length Insert CRES Helical Coil Fine Thread, 1 Dia Nominal Length Insert CES Helical Coil Fine Thread, 1 - 112 Dia Nominal Length Insert CRES Helical Coil Fine Thread, 2 Dia Nominal Length Insert CRES Helical Coil Fine Thread, 2- 1 /2 Dia N
20、ominal Length Insert CRES Helical Coil Fine Thread, 3 Dia Nominal Length (Unless otherwise indicated, copies of federal and military specificalions, standards, and handbooks are available from the Standardization Documents Order Desk, Bldg.4D. 700 Robbins Avenue, Philadelphia, PA 191 11-5094.) 2.2 N
21、on-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues
22、 of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) ANSUASME B46.1 Surface Texture (Surface Roughness, Waviness, and Lay) (Application for copies should be addressed to the American National Standard
23、s Institute, Inc., 1430 Broadway, New York, New York 1001 8.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM E8 Materials, Metallic, Tension Testing of ASTM E290 Materials, Metallic, Semi-guided Bend Test for Ductility of ASTM E1282 Standard Guide for Specifying the Chemical Compositions and
24、 Selecting Sampling Practices and Quantitive Analysis Methods for Metals and Alloys ASTM D395 1-90 Standard Practice for Commercial Packaging (Application for copies should be addressed to the American Society for Testing and Materials, 19 16 Race Street, Philadelphia, PA 19103-1 137.) NATIONAL AERO
25、SPACE STANDARDS (NAS) NAS 1 130 Insert Screw Thread, Helical Coil, Free Running and Self-Locking, Tangless NAS 6603 thru 6620 Bolt, Hex Head, Close Tolerance, Alloy Steel, Long Thread, Self-Locking and Nonlocking 3 APPROVAL DATE: MAY 1998 REVlSlON USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY NATIONA
26、L AEROSPACE STANDARD IS ENTIRELY VOLUNTARY. ALA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER NATIONAL AEROSPACE STANDARDS. AL4 MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUITABILITY OF ITEMS FOR ANY PmncuLm APPLICATION, OR (2) THE EXISTENCE OF OR APPLICABILITY T
27、HERETO OF PATENT OR TRADEMARK RIGHTS Copyright Aerospace Industries Association of America Inc. Provided by IHS under license with AIA/NASNot for ResaleNo reproduction or networking permitted without license from IHS-,-/:#:#$#:$:#*:$#:# STD.AIA/NAS NASM884b-ENGL L798 0338743 0505570 784 NATIONAL AER
28、OSPACE STANDARD O COPYRIGHT 1998 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA. INC. ALL RIGHTS RESERVED NASM8846 (Application for copies should be addressed to Aerospace Industries Association of American, Inc., 1250 Eye Street, N.W., Washington, D.C. 20005.) SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) AS
29、7245 Inserts, Screw Thread, Helical Coil 19Cr-9.2Ni, Corrosion Resistant Steel, Procurement for (Application for copies of AMS publications should be addressed to Society of Automotive Engineers, Inc., 400 Commonwealth Drive, Warrendale, PA 15096.) (Non-Government standards and other publications ar
30、e normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services.) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein
31、(except for related associated detail specifications, specification sheets, or MS and NAS standards), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Associate
32、d specifications and standards. The individual item requirements shall be as specified herein and in accordance with the applicable standard. In the event of any conflict between the requirements of this specification and the MS sheets and NAS standard, the latter shall govern. 3.2 Material. Unless
33、otherwise specified on the drawing, the wire shall be manufactured from induction furnace or electric arc furnace steel, cold drawn, and shaped by rolling to conform to this specification and the applicable MS and NAS standards. 3.2.1 Chemical composition. The chemical composition of the wire shall
34、conform to Table I (AS 7245). Table I. Chemical Composition Element Carbon Analysis (Percent) O. 15 Max Manganese 2.00 Max Silicon 1 .O0 Max Phosphorus 0.045 Max Sulfur 0.035 Max Chromium 17.00 to 20.00 Nickel 8.00 to 10.50 Molybdenum 0.75 Max Copper 0.75 Max Iron Remainder APPROVAL DATE: MAY 1998 4
35、 REVISION USE OF OR RELIANCE UPON THIS 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 (I) THE SUlTABILITY OF ITEMS FOR ANY P
36、ARTICULAR APPLICATION, OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS Copyright Aerospace Industries Association of America Inc. Provided by IHS under license with AIA/NASNot for ResaleNo reproduction or networking permitted without license from IHS-,-/:#:#$#:$:#*:$#:
37、#NATIONAL AEROSPACE STANDARD O COPYRIGHT 1998 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC. ALL RIGHTS RESERVED NASM8846 3.2.2 Tensile Strength. Before coiling into parts, the wire shall have a tensile strength not lower than 150,000 pounds per square inch (psi) (see 4.4.2). 3.2.3 Cold-bending.
38、Wire from which the inserts are made shall withstand, without cracking, bending at room temperature through an angle of 180 degrees around a diameter equal to twice the cross-sectional dimension of the wire in the plane of bend (see 4.4.3). 3.3 Design. The detail design and dimensions of the inserts
39、 shall conform to the applicable MS sheets and NAS standards (see 3.1). 3.3.1 Surface texture. The surface roughness of thread flanks shall be 32 microinches AA or as specified in the detail specification or the product drawing. Roughness shall be specified in accordance with the method outlined ANS
40、UASME B46. I. 3.4 Threads. Class 1 inserts, (NASI 130, MS122076 thru MS122275, and NASI 130, MS124651 thru MS124850) and Class 2 inserts (NASI 130, MS21209), when assembled in accordance with MS33537, shall produce a finished thread meeting the requirements of FED-STD-H28/2 and accept external threa
41、ds which conform to MIL-S-8879. After assembly, Class 1 and Class 2 inserts shall conform to the minimum and maximum lengths specified on MS33537. Class 3 inserts (MS9018), when assembled, shall form threads in accordance with MS9071. Class 5 and Class 6 inserts, when assembled in accordance with th
42、e applicable design standard or drawing, shall form threads conforming to FED-STD-H28/7 and MIL-P-7 105, respectively. 3.5 Screw-locking-torque. The class 2 insert, when assembled in accordance with MS33537 and tested in accordance with 4.4.5 shall produce torque in accordance with the values specif
43、ied in Table II. 5 APPROVAL DATE: MAY 1998 REVlSlON USE OF OR RELIANCE UPON THIS 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 RESPECT
44、MG (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. Provided by IHS under license with AIA/NASNot for ResaleNo reproduction or networking permitted wi
45、thout license from IHS-,-/:#:#$#:$:#*:$#:#sTD.AIA/NAS NASM884b-ENGL L998 D 03287q3 0505572 557 NATIONAL AEROSPACE STANDARD 8 COPYRIGHT 1998 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC. ALL RIGHTS RESERVED Table II. Pound-Inches Torc Bolt Size 0.099-56 O. 1 12-48 O. 138-40 O. 164-36 O. 190-32 0.
46、250-28 0.3 125-24 0.375-24 0.4375-20 0.500-20 0.5625-1 8 0.625- 1 8 0.750-16 0.875-14 1 .oo- 12 1.125-12 1.250- 12 1.375- 12 1 SOO- 12 - I/ Ounce-i Fine Thread Series Maximum Locking Torque, Installation or Removal 2 3 6 9 13 30 60 80 1 O0 150 200 3 O0 400 600 800 900 1,000 1,150 1,350 Minimum Break
47、away Torque 7. I/ 1 .O 1.5 2.0 3.5 6.5 9.5 14.0 18.0 24.0 32.0 50.0 70.0 90.0 1 17.0 143 .O 165.0 190.0 10. 11 e at Room Tem Bolt Size 0.086-56 0.099-48 O. 1 12-40 0.125-40 O. 138-32 O. 164-32 O. 190-24 0.250-20 0.3125-18 0.375-16 0.4375-14 0.500- 13 0.5625-12 0.625- 1 1 0.750-10 0.875-9 1 .ooo-8 1.125-7 1.250-7 1.375-6 1 SOO-6 NASM8846 rature Zoarse Thread Series Maximum Locking Torque, Installation or Removal 1.25 2 3 4.7 6 9 13 30 60 80 1 O0 150 200 3 O0 400 600 800 900 1,000 1,150 1,350 Minimum Brea
