1、16 May 1966 SUPERSEDING FA-PD-MI-2644, Rev. O 30 April 1965 MILITARY SPECIFICATION PROJECTILE, HEP-T, 106MM, M346A1 METAL PARTS 1. SCOPE 1.1 This specification is the applicable detail specification for Projectile, HEP-T, 106MM, M346A1 Metal Parts. 2. APPLICABLE DOCUMENTS 2.1 The following documents
2、 of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extend specified herein. SPECIFICATION Military. MIL-A-2550 - Ammunition and Special Weapons, General MIL-P-10025 . - Packaging, Packing and Marking for Interplant Specification F
3、or Shipment of Inert Amunition Components, General Specification For 5. STANDARDS Federal Federal Test Method Standard No. 151 - Metals; Test Method Mi li tary MIL-STD-105 MIL-STD-109 MIL-STD-129 MIL-STD-639 - Surface Roughness Values Preferred for MIL-STD-1167 - Ammunition Data Cards MIL-STD-1235 -
4、 Sampling Procedures and Tabies for Inspection by - Quality Assurance Terms and Definitions - Marking for Shipment and Storage Attributes Army Ordnance Materiel - Single and Blultilevel Continuous Sampling Procedures and Tables for Inspection by Attributes THIS CUMENT CONTAINS I.pI PAGES. Provided b
5、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-6052L 13 97977Ob 0338893 b W I MIL-P-6052 1 (Mu) 2.1 (Contd) DRAWINGS Munitions Command a5 9 6 145 F7548604 IEL-8596145 - Projectile, HEP-T, lOGMM, M346A1, Metal Parts - Pallet, for Fixed and Semifixed Proj
6、ectile Assembly - Inspection Equipment List for Projectile, HEP-T, 106MM, M346A1, Metal Parts (Copies of specifications, standards, drawings and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the
7、 contracting officer.) 3. REQUIREMENTS 3.1 General.- Materials, parts and assemblies shall comply with the require- ments specified on the applicable drawings s referenced specifications s and the following : 3.2 First article sample.- Requirements for the submission of first article sample by the c
8、ontractor shall be as specified in the contract. shall be uniform throughout each lot of components, and shall be conducted as to produce in any component the minimum mechanical properties specified. of metal involving plastic flow is permitted without subsequent stress relief, 3.3 Heat treatment or
9、 stress relief.- Heat treatment or stress relief applied No forming 3.4 Mechanical Properties.- The mechanical properties shall conform to the requirements as stated in the applicable specification and on the applicable component drawing . 3.5 Rotating band. 3.5.1 Band Seat.- Prior to application of
10、 the welded overlay rotating band, the band seat shall be clean and free of oil, grease, dirt, rust, and other foreign matter . 3.5.2 Rotatinp band application.- Rotating band shall be overlay welded in accordance with the applicable drawing and specification. 3.6 Protective coatings.- Protective co
11、ating shall be in accordance with the applicable drawing and specifications referenced thereon. 3.7 Functional. 3.7.1 Metal parts security.- Testing for metal parts security under all service conditions of pressure and temperature shall be mandatory. be no breakup of the rotating band in flight, nor
12、 shall there be evidence of failure of components or excessive deformation due to firing stresses, There shall 2 t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-bO52L 13 97799Ob 0338874 8 = 3.7.2 Veloclty-ccuracy,- Testing for velocity-accura
13、cy shall be for information only. 3.8 Workmanship.- The requirements for workmanship are as shown on the applicable drawings, referenced specifications and the following: 3.8.1 Metal defects, steel.- All components shall be free from cracks, splits, seams, cold shuts, inclusions, porosity and any ai
14、milar defect. 3.8.2 Metal defects, nonferrous.- Soundness of material shall be as required by the applicable specifications. with the applicable drawings. 3.8.3 Surface finish.- Surface finish of all components shall be in accordance 3.8.4 Threads.- Threads shall be full and undamaged for the entire
15、 minimum length or depth a8 specified on the applicable component drawing, and shall be in accordance with the provisions of MIL-A-2550, 3.8.5 Burr.- No component shall have a burr which might interfere with the assembly or function of the projectile or which might be injurious to personnel handling
16、 the item. 3.8.6 Foreign matter.- All parts and assemblies shall be free of chips, dirt, grease, oil, rust, corrosion or other foreign matter. 4, QUALITY ASSURANCE PROVISIONS 4,l Responsibilitv for inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible
17、 for the performnce of all inspection requirements specified herein. Except as otherwise specified, the supplier my utilize his own facilities or any comercial laboratory acceptable to the Government. The Government reoerves the right to perform any of the inspections set forth in the specification
18、where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements, 4.1.1 guality assurance tem and definitions,- Reference shall be made to MIL-STD-109 to define quality assurance terms used. 4.1.2 Inspection.- Inspection shall be in accordance with MIL-A
19、-2550, except as specified herein. 4.2 First article sample. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-60521 13 W 7979706 0338895 T W - MIL-P- 6052 1 (M) 4.2.1 Initial production sample.- At the beginning of regular production, a sample
20、 shall be submitted in accordance with contract requirements and shall consist of twenty-nine assemblies as follows: 22 Metal parts assemblies complete (painted) 2 Metal parts assemblies complete (unpainted) 5 Sets of component parts, unassembled Twenty of the above metal parts assemblies (painted)
21、shall be forwarded to a designated Proving Ground for ballistic testing. using the same materials, equipment, processes and procedures as will be used in regular production. be the same as used for regular production and shall be obtained from the same source of supply . The sample shall be manufact
22、ured All parts and materials, including packaging and packing shall 4.2.1.1 Examination and test.- After inspection and provisional acceptance at source, the sample shall be inspected for all requirements of the drawings and specifications at a Government laboratory or such other facility specified
23、in the contract . 4.2.1.2 Initial production sample failure.- Failure of the sample to comply with requirements of the drawings and specifications shall result in sample disapproval . 4.3 Inspection Provisions. 4.3.1.1 Submission of product.- The contractor shall submit the product in accoFdance wit
24、h MIL-STD-105 or MIL-STD-1235, as applicable. 4.3.1.2 Heat treated or stress relief lots,- Heat treated or stress relieved lots shall contain bodies from not more than one heat of steel that has been heat treated or stress relieved in the same furnace, at the same temperature and for the same length
25、 of time. After heat treatment or stress relief, samples shall be selected and subjected to the hardness test hereinafter prescribed. 4.3.2 Examination.- One hundred percent examination shall be performed for all critical defects. defect basis in accordance with the classification of defects contain
26、ed herein, using the sampling plans contained in MIL-STD-105 or MIL-STD-1235, as applicable. An AQL of 0.25 percent for each major defect and an AQL of 0.40 percent for each minor defect shall be used. Ordnance Standard Finish Blocks prescribed by MIL-STD-639 shall be used as a basis of comparison f
27、or surface roughness determination. Examination for major and minor defects shall be performed on a All nonconforming material shall be rejected. The 4.3.2.1 Plug base, Drawing CS596143, covering a detail of Drawing F8596145 Defect CRITICAL None defined Method of Inspection 4 I Provided by IHSNot fo
28、r ResaleNo reproduction or networking permitted without license from IHS-,-,-4-3.2.1 MAJOR 101 , 102 . 103 . 104, 105 . 106 . 107 . 108 . 109 . 110. 111. MINOR 201 . 202 . 203 . 204 . 20% 206. 207 . 208 . 209 . 210. 211. 212, 213 . 214. 215 . 216. 217. 218 . 219 . 220. 221. 222 , (Cont d) Defect - C
29、oncentricity of pitch diameter of body thread with pitch diameter of fuze thread, including perpendicu- larity with body seat and fuze seat. Caulking groove functionally concentric with pitch diameter of fuze thread Fuze seat counterbore functionally concentric with pitch diameter of fuze thread Per
30、pendicularity of body seat with pitch diameter of body thread Pitch diameter of body thread, min. Major diameter of body thread, min. Pitch diameter .of fuze thread, max. Minor diameter of fuze thread, max. Diameter of caulking groove (at rear) Angle of caulking groove wall Metal defective MIL-P-605
31、21(MU) Method of Inspection Pitch diameter of body thread, max. Pitch diameter of fuze thread, min. Diameter of body thread chamfer, min. Diameter of fuze thread chamfer, max. Diameter of gasket boss Diameter of fuze seat counterbore Diameter of flange Diameter of flat between body thread and gasket
32、 boss Depth to bottom of fuze seat Depth to bottom of caulking groove Length, total Thickness of flange Width of gasket boss Width from end of body thread to start of gasket boss Width of flat between body thread and gasket boss, min. Width of flat at rear of caulking groove, mx. (if applicable) Pre
33、scence and location of wrench holes Radii or chamfers missing or incorrect Sur face finish , improper Protective coating inadequate or damaged Burr Foreign matter Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Visual (See 6.2) Visual (See 6.2) Visual (
34、See 6.2) Visual (See 6.2) Visual Visual 5 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-hOC2L 13 7977706 0338877 3 W _ - EKL-P-60521 (MU) 4.3.2.2 Gasket, Drawing B8596149, covering a detail of Drawing F8596145 Defect Method of Inspection CR
35、ITICAL None defined MAJOR 101 . Hardness MINOR 201 . Diameter , inside 202. Diameter, outside 203 . Thickness Approved method Gage Gage Gage 4.3.2.3 Body, Drawing F8596146, covering a detail of Drawing F8596145 CRITICAL None defined MAJOR 101. 102. 103 . Metal defective Location of index button hole
36、 Wall thickness at index button hole, min. MINOR 201. Radii or chamfers, missing or incorrect 202 . 203. Burr 204. Foreign rnatter Sur face finish improper 4.3.2.4 Metal Parts Assembly, Drawhg F8596145 (before paint) CRITICAL None defined MAJOR 101. Concentricity exterior of nose with bourrelet 102.
37、 Concentricity interior of nose with bourrelet 103. Concentricity of body with bourrelet 104. Concentricity of pitch diameter of threads with bourrelet, including perpendicularity with rear face 105. Rotating band lands functionally concentric with bourrelet Gage Gage Visual Visual (See 6.2) Visual
38、(See 6.2) Visual Visual Gage Gage Gage Ga ge Gage x Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 ML-P-60521 (Mu) 4.3.2.4 MAJOR (Contd) 106 . 107 . 108 . 109 . 110. 111. 112. 113 . 114. 115. 116. 117. 118. 119 . 120. 121. 122 . 123 . 124 . 125 .
39、126. 127 . i28 . 129 . 130. MINOR 201 . 202 . 203 . 204. 205 . 206 . 207 . 208 . 209 . 210. 211 . Defect - Rotating band groove functionally concentric with Alignment of index button(s) with rotating band lands Diameter of bourrelet, min. Diameter of rotating band lands Diameter of rotating band gro
40、oves Diameter from rear face to first inside basic length Diameter from rear face to second inside basic length Diameter from rear face to third inside basic length Diameter from rear of face to fourth inside basic length Height of index button Length from nose to first outside basic diameter Length
41、 from nose to second outside basic diameter Length of rotating band Length, total Location of rotating band from rear face Location of bourrelet from front of rotating band, max. Location of crimp groove rib Wall thickness, min. (indicated area) Wall thickness at nose Width of rotating band lands Wi
42、dth of crimp relief groove Width of crimp groove rib Width of groove forward of rib Radius rear of crimp relief groove Metal defective rotating band lands Diameter of crimp relief groove Diameter of body front and rear of rotating band Diameter forward of thread Diameter of chamfer at rear of thread
43、 Length from rear of rotating band to rear of angle Depth of undercut front and rear of rotating band (if applicable) Width of undercut front and rear of rotating band (if applicable) Radii or chamfers missing or incorrect Sur face finish, improper Burr Foreign matter rlethod of Inspection Gage Gage
44、 Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Visual Gage Gage Gage Gage Gage Visual (See 6.2) Visual (See 6.2) Visual (See 6.2) Visual (See 6.2) Visual Visual 7 Provided by IHSNot for ResaleNo reproduction or networking permitted with
45、out license from IHS-,-,-MIL-P-6052L 13 7777906 0338877 7 MIL-P-60521 (Mu) 4.3.2.5 Metal parts assembly, Drawing F8596145 (after paint) Defect - CRITICAL 1. 2. Hydrostatic stamp missing (signifying failure to comply with requirements) Air pressure stamp missing (signifying failure to comply with req
46、uirements) WOR 101. Weight 102. Pitch diameter of thread, max. 103. Minor diameter of thread, max, 104. Diameter of bourrelet, max. 105. Length of effective thread, min, 106. Paint in cavity, inadequate or excessive 107. Improper assembly MINOR Method of Inspection 201. 202. Length of thread, max. 2
47、03. Rotating band damaged 204. Paint on rotating band bearing surfaces and rear face 205. Paint on threads 206. Paint inadequate or damaged 207. Paint not dry Pitch diameter of thread, min. 208. Marking missing, incorrect or illegible 209. Burr 210. Foreign matter 4.3.2,6 Carton, packing - prior to
48、sealing. CRITICAL None defined MA SOR None defined 8 I - -. - - . Visual Vi sua 1 Approved scale Gage Gage Gage Gage Visual Visual and Manual Gage Gage Visual Visual Visual Visual Visual and Tactile Visual Visual Visual Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
49、ense from IHS-,-,-4 . 3 . 2 . 6 (Cont d) Defect - MINOR MIL-P-6052L 13 7777706 0338700 T W MIL-P-60521 (MU) Method of Inspection Visual Visual Visual 201. Improper assembly 202. Incorrect number in carton 203, Separator, missing or damaged 4.3.2.7 Carton, Packing - After Sealing CRITICAI, None defined MAJOR None defined MINOR 201. 202. Carton, improperly sealed 203. Contents loose 204. Marking, mis
