1、 MIL-W-L4742A (5) W 99999Ob 20bLbb 959 = I INCH- POUND 10 Auqust 1998 MIL-W-14742A (AR) AMENDMENT 5 SUPERSEDING AMENDMENT 4 25 March 1994 MILITARY SPECIFICATION WARHEAD SECTION, GUIDED MISSILE, PRACTICE, M220, ASSEMBLING AND PACKING This Amendment forms a part of Military Specification MIL-W-14742A
2、(AR), dated 17 January 1972, and is approved for use by the U.S. Army Armament, Munitions and Chemical Command and is available for use by all Departments and Agencies of the Department of Defense. PAGE 1 2.1: Delete “UU-T-106-Tape, Pressure Sensitive Adhesive Masking, Paper“ and substitute “PPP-T-4
3、2-Tape, Packaging/Masking Paper.“ 2.1: Delete, Specifications, as follows: “ FE DERAL PPP-T-42 - Tape, Packaging/Marking Paper UU-T-450 - Tissue, Facial.“ PPP-T-42 - Tape, Packaging/Marking Paper UU-T-450 - Tissue, Facial.“ PAGE 2 2.1: Delete: “PICATINNY ARSENAL“ and substitute “U .S. ARMY ARMAMENT
4、RESEARCH AND DEVELOPMENT COMMAND (ARRADCOM).“ “Command (ARRADCOM) “ and substitute “Center (ARDEC) . “ * 2.1: Add A NEW STANDARD as follows: “AMERICAN SOCIETY OF TESTING AND MATERIALS (ASTM) ASTM D3359 - Standard Test Method for Measuring Adhesion by Tap test“ 1 of 5 AMSMC N/A FSC 1336 DISTRIBTIQN S
5、TATEMENT A. distribution is unlimited. Approved for public release; Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-L4742A (5) E 99999Qb 2QbLb 895 E MIL-W- 14 7 42A (AR) AMENDMENT 5 3.4: Delete in its entirety. PAGE 3 3.7: Add new paragraph as
6、follows: “ 3.7 Adhesion of paint. - Removal of three (3) or more complete squares of paint constitutes test failure when tested as specified in 4.4.4.“ 3.8: Add new paragraph as follows: “ 3.8 Salt Spray Test.- the paint coating of the warhead assembly shall not exhibit sign of corrosion except adhe
7、sion tested area when tested as specified in 4.3.3.1.8 and 4.3.3.2.5.“ 3.9: Add as follows: 3.9 Protective Coating. - The paint coating shall be a smooth, continuous, adherent film which is free of such surface imperfections as runs, sags, blisters, orange peel, eyes, seediness or pinholes.“ PAGE 6
8、4.3.2.1: Add Major 103 as follows: “Major 103 AQL 1.0 Percent Improper chamfer 4.3.2.1: Delete Minor 202 in its entirety. 4.3.2.1: Add Major 104 as follows: “Mai or 104 protective coating AQL 0.40 Percent as specified PAGE 7 4.3.2.3.: Add Major 307 as follows: “Ma j or AQL 1.0 Percent 107 True posit
9、ion of holes (4 places) Gage Visual Gage O 1 O O 6“ O 1 O O 7 “ II - 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-14742A (AR) AMENDMENT 5 PAGE 8 4.3.3.1.6: Delete in its entirety. 4.3.3.2.4: Delete in its entirety. 4.3.3.1.4: change “4.3.3
10、.2.4“ to “4.3.3.2.2.“ 4.3.3.1.5: change “4.3.3.2.5“ to “4.3.3.2.3.“ * 4.3.3.1.7: Add new paragraph as follows: 4.3.3.1.7 Adhesion of paint (see 3.7). Warhead assemblies shall be tested for Adhesion of paint in accordance with 4.4.4 upon the completion of the adhesion test, the same warhead assemblie
11、s shall be tested for salt spray in accordance with 4.3.3.1.8.“ * 4.3.3.1.8: Add new paragraph as follows: 4.3.3.1.8, Salt Spray (see Dwg. 9260040 and 3.8). - The same war head assemblies from the adhesion Test, shall be tested for Salt Spray exposure in accordance with drawing 9260040.“ * 4.3.3.2.4
12、: Add new paragraph as follows: 4.3.3.2.4 Adhesion (see 3.7). - Major Defect-Code No. 01008. The warhead assembly shall be tested for adhesion in accordance with 4.4.4 Testing shall be performed on one warhead assembly for each weekly continuous production quantity of no more than one thousand warhe
13、ad assemblies. Failure to comply will be cause for rejection of the production since the previous test.“ * 4.3.3.2.5: Add new paragraph as follows: “4.3.3.2.5: Salt Spray Test (see Dwg. 9260040 and 3.8). - Major Defect-Code No. 01009. - The same warhead assembly from the adhesion test, shall be test
14、ed for salt spray exposure in accordance with drawing 9260040. Failure to comply will be cause for rejection of the production since the previous test.“ PAGE 9 4.4.1, Line 5: Delete “location of countersink (one hole only) .I 4.4.3.1, Line 2- Delete “UU-T-106“ and substitute “PPP-T-42.11 3 Provided
15、by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-1474SA (AR) AMENDMENT 5 PAGES 9 Delete “U.S. Army Research and Development Command, ATTN: AMSMC-QAM-Q“ and substitute “U-S. Army Research and Development Center, ATTN: AMSMC-QAQ-V.“ 4 Provided by IHSNot fo
16、r ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-14742A (AR) AMENDMENT 5 NOTE: The margins of this amendment are marked with an asterisk or vertical line to indicate where changes (additions, modifications, deletions) from previous amendment were made. This was done
17、 as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document in relationship to the last previous amendment. Custodian: Amy-AR Preparing activity: Army-AR (Project 1336-0031) 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
