1、 MIL-C-71134 (AR) AMENDMENT 226 February 2001 SUPERSEDING AMENDMENT 130 August 1996 MILITARY SPECIFICATION CARTRIDGE, HE, 120MM, M933 W/FUZE M745 LOADING, ASSEMBLING AND PACKING This amendment forms a part of MIL-C-71134 (AR), dated 01 July 1992 and is approved for use by the U.S. Army Armament Rese
2、arch, Development and Engineering Center, and is available for use by all Departments and Agencies of the Department of Defense. PAGE 3 2.1.2, Under PRODUCT AND PACKAGING DRAWINGS: Add: “12961145 - Packing and Marking of Interplant Shipping Pallet Box for Body Loading Assemblies for 120mm Mortar” PA
3、GE 4 3.3, Delete in its entirety and substitute: “3.3 Surface cavitation. Cavities formed in Segment D (see 3.7) due to chipped or broken explosive from the sidewall of the fuze well shall not exceed in aggregate more than 1/4 of the circumference. The maximum (max.) dimension of any cavity in the f
4、aced (bottom) surface of the fuze well shall not exceed 0.63 centimeters (cm) in any direction and the total area of all cavities shall not exceed 80 percent of the faced surface area. No individual point of explosive shall extend above the flat surface on which the booster assembly would rest. Cavi
5、ties having a max. Dimension of 0.08 cm or less shall be disregarded in the computation. Disregard any cavitation in the fuze well above Segment D.“ 1 of 12 AMSC N/A FSC 1315 DISTRIBUTION STATEMENT A. Approved for public release; distribution unlimited INCH-POUNDProvided by IHSNot for ResaleNo repro
6、duction or networking permitted without license from IHS-,-,-MIL-C-71134 (AR) AMENDMENT 2 3.7, Delete in its entirety and substitute: “3.7 Cavitation in high explosive charge. 3.7.1 Projected areas and dimensions. Cavities and cracks within the explosive charge shall not exceed the requirements spec
7、ified in Table IV when determined as specified in 4.4.3.3 and 4.5.3. Cavities having a maximum projected length of 0.08 cm or less shall be disregarded, provided they are separated by at least 1.27 cm of solid cast. TABLE IV. Cavitation requirements. SEGMENTS (Se Figure 1) A B C D Sum of projected a
8、rea of the cavities, excluding pipes, cracks and annular rings, square centimeter (sq cm) 0.10 1.61 3.23 3.23 Projected length of any cavity excluding pipes, cracks and annular rings, (cm) 0.32 1.27 1.27 1.90 Piping cavities, max. projected area (sq cm) 0 1.61 3.23 N/A Piping cavities, max. Projecte
9、d width (cm) 0 1.27 1.27 N/A Cracks, max. projected width (cm) 0.08 0.08 0.16 N/A Annular rings, max. projected width (cm) 0 0 0.63 NA 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71134 (AR) AMENDMENT 2 Note - If the length of the largest
10、cavity is 0.16 cm or less, the max. total projected area may be 0.32 sq cm. NA - Not applicable. 3.7.2 Porous areas. Porous areas shall be treated as cavities and shall be subject to the restrictions placed upon the cavities, except that 80 percent of the projected length and 80 percent of the proje
11、cted area shall be considered. 3.7.3 Cracked charges. Not more that one transverse crack shall be permitted in segment A and not more that a total of three transverse cracks shall be permitted in Segments A, B and C, combines. Cracks shall be disregarded in Segment D. 3.7.4 Annular rings. The presen
12、ce of annular rings 0.16 cm max. and extending from the shell wall 0.63 cm into the charge shall be disregarded. 3.7.5 Cavities extending into two segments. The entire area of cavities extending into two segments shall be subject to the requirements of both segments. 3.7.6 Base separation. The separ
13、ation between the base of the projectile and the explosive charge shall not be greater than 0.04 cm.” 3.7.3, First sentence: change “1 1/2 inches“ to “38.1 mm“ and “1/4 inch“ to “6.35 mm” PAGE 7 4.3.3, Delete “f. Horizontal range probable error is exceeded. (70 degrees F conditioned samples only)” a
14、nd substitute “f. Horizontal range probable error is exceeded (21 degrees C conditioned samples only).“ PAGE 12 * 4.4.2.2, Delete in its entirety and substitute the included page 12. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-QUALITY CONFORMAN
15、CE INSPECTION. CLASSIFICATION OF CHARACTERISTICS MIL-C-71134 (AR) AMENDMENT 2 DRAWING NUMBER PARAGRAPH 4.4.2.2 TITLE Apadter SHEET 1 OF 2 12577513 NEXT HIGHER ASSEMBLY 12577504 CLASSIFICATION EXAMINATION OR TEST CONFORMANCE CRITERIA REQUIREMENT PARAGRAPH INSPECTION METHOD REFERENCE Critical None def
16、ined Major 101 Pitch diameter of forward (internal) thread Level III 3.2 Gage 102 Minor diameter of forward thread Level III 3.2 Gage 103 Pitch diameter of wear (external) thread Level III 3.2 Gage 104 Major diameter of rear thread Level III 3.2 Gage 105 Roundout of forward thread to front face, sho
17、ulder and rear pitch diameter Level III 3.2 Gage 106 Forward thread minimum effective length Level III 3.2 Gage 1 / 107 Distance from rear face to shoulder Level III 3.2 Gage 108 Failure of protective finish 2 / 3.2 Visual/4.5.5 109 True position of adapter holes with front face and rear thread Leve
18、l III 3.2 Gage 110 Diameter of adapter holes (2) Level III 3.2 Gage 111 Depth of adapter holes at full diameter Level III 3.2 Gage NOTES: 1/ Minor diameter shall be checked to full form for min. length. 2/ See 4.4.3.4 4 (12) Provided by IHSNot for ResaleNo reproduction or networking permitted withou
19、t license from IHS-,-,-QUALITY CONFORMANCE INSPECTION CLASSIFICATION OF CHARACTERISTICS MIL-C-71134 (AR) AMENDMENT 2 PARAGRAPH TITLE DRAWING NUMBER 4.4.2.2 Adapter SHEET 2 OF 2 12577513 CLASSIFICATION EXAMINATION OR TEST CONFORMANCE CRITERIA REQUIREMET PARAGRAPH NEXT IGHER ASSEMBLY 12577504 INSPECTI
20、ON METHOD REFERENCE 112 Depth of adapter holes, max. Level III 3.2 Gage 113 Diameter of taper at basic lengths (2) Level III 3.2 Gage 114 Runout of taper with rear tread PD and shoulder Level III 3.2 Gage 115 Length from front face to shoulder Level III 3.2 Gage 116 ID rear of internal thread Level
21、III 3.2 Gage 117 OD of undercut forward of external Thread Level III 3.2 Gage 118 Surface finish of front face and Shoulder Level III 3.2 Visual 119 Presence of burrs in threads Level III 3.10 Visual 120 Phosphate coating missing or inadequate on unpainted surface Level III 3.2 Visual 121 Width of u
22、ndercut forward of external thread Level III 3.2 Gage Minor 201 Radii or chamfers incorrect Level V 3.2 Gage 202 Evidence of poor workmanship Level V 3.2 Visual NOTES: 5 (12) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71134 (AR) AMENDMENT
23、2 PAGE 15 4.4.2.5, Special C: Delete “X-Ray” and substitute “4.5.3” 4.4.2.5, Special: change “a“, “b“, “c“ to “A“, “B“, “C“ Add 4.4.2.5.1 as included page 15a: Add 4.4.2.5.2 as included page 15b: 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-QUAL
24、ITY CONFORMANCE INSPECTION CLASSIFICATION OF CHARACTERISTICS MIL-C-71134 (AR) AMENDMENT 2 PARAGRAPH 4.4.2.5.1 TITLE Packing and Marking of Interplant Shipping Pallet Box for Body Loading Assemblies (Unclosed) SHEET 1 OF 1 DRAWING NUMBER 12961145 NEXT HIGHER ASSEMBLY Final CLASSIFICATION EXAMINATION
25、OR TEST CONFORMANCE CRITERIA REQUIREMENT PARAGRAPH INSPECTION METHOD REFERENCE Critical None defined Major 101 Body Assemblies improperly oriented 1/ Level III 5.4 Visual Minor 201 Marking missing, misleading or unidentifiable Level V 5.5 Visual 202 Evidence of poor workmanship Level V 3.10 Visual N
26、OTES: Projectiles must be packed with the fuze end up. 7 (15a) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-QUALITY CONFORMANCE INSPECTION CLASSIFICATION OF CHARACTERISTICS MIL-C-71134 (AR) AMENDMENT 2 PARAGRAPH 4.4.2.5.2 TITLE Packing and Marking
27、 of Interplant Shipping Pallet Box for Body Loading Assemblies (Closed) SHEET 1 OF 1 DRAWING NUMBER 12961145 NEXT HIGHER ASSEMBLY Final CLASSIFICATION EXAMINATION OR TEST CONFORMANCE CRITERIA REQUIREMENT PARAGRAPH INSPECTION METHOD REFERENCE Critical None defined Major 101 Contents of box loose Leve
28、l III 5.4 Manual 102 Cover not secure Level III 5.4 Manual Minor 201 Evidence of poor workmanship Level V 3.10 Visual NOTES: 8 (15b) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71134 (AR) AMENDMENT 2 PAGE 17 * 4.4.2.7, Critical 1: Delete in
29、 its entirety. PAGE 18 * 4.4.2.7, Add Major defect as follows: “Major 115, Ignition Cartridge not properly assembled or fully seated 100% 3.2 Gage” PAGE 26 4.4.3.1.2, Delete “f. Horizontal range probable error is exceeded. (70 degrees F conditioned samples only)” and substitute “f. Horizontal range
30、probable error is exceeded. (21 degrees C conditioned samples only)” 4.4.3.1.3, Delete “f. Horizontal range probable error is exceeded. (70 degrees F conditioned samples only)” and substitute “f. Horizontal range probable error is exceeded. (21 degrees C conditioned samples only)” PAGE 27 4.4.3.3, D
31、elete in its entirety and substitute: “4.4.3.3 Cavitation (see 3.7). The sampling plan and procedure for this test shall be accordance with MIL-STD-1235 using CSP-1 plan having the following parameters; i value shall be 1470, f value shall be 1/10, and the S value shall be 4120. Any cartridge having
32、 cavitation in excess of that permitted by the applicable requirements for any segment shall be classed defective. The test shall be performed as specified in 4.5.3 with equipment in accordance with 4.4.4.” PAGE 28 4.5.1, Delete second paragraph in its entirety and substitute: “The cartridges for fi
33、rst article testing and the first production lot shall be separated into three equal groups: one group of 36 conditioned to 49 + 1.5 degrees C for 24 hours; one group of 72 conditioned to 21 + 1.5 degrees C for 24 hours and one group of 36 conditioned to -32 + 1.5 degrees C for 24 hours. The quantit
34、ies shall be tested at charges as indicated in Table III.” 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71134 (AR) AMENDMENT 2 4.5.1, Fourth paragraph, delete first sentence in its entirety and substitute: “The cartridges shall be fired fr
35、om a 120mm M121 Carrier-Mounted Mortar at an elevation of 800 mils within two minutes after removal from the conditioning chamber. The 120mm M120 Towed Mortar (ground mount) may be used with prior approval from the Government.” 4.5.1, Fourth paragraph, After the third sentence, Add: “The mortar tube
36、 shall be dray swabbed every five rounds at Zone 1 and every ten rounds at Zones 0 and 4 counting warmer, spotter, test and reference rounds.“ PAGE 29 4.5.1, Change paragraph 3 to read: “A smear camera shall be used to photograph all test samples. The camera shall be positioned to pick up each round
37、 12.2 meters from the muzzle of the gun “ 4.5.2, Delete in its entirety and substitute the following: “4.5.2 Strength of adhesive bond. The sample shall be tested for integrity by applying the required load 180 degrees from the bond radially and in a direction away from the axis (center) of the ring
38、.” PAGE 30 4.5.3.1, Change second sentence to read: “Location of the penetrameter hole shall be 171.45 mm measured from base shoulder of projectile body towards fuze nose threads.” Change seventh sentence to read: “Penetrameter thickness shall be 0.51 plus or minus 0.25 mm.” 4.5.3.1, Seventh sentenc
39、e: change “.020“ to “0.508 mm“ and change, “0.10 inches“ to “.254 mm“. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71134 (AR) AMENDMENT 2 PAGE 31 4.5.5, Delete “ unpainted surfaces and areas within 3/16 inch of unpainted surfaces may be
40、protected.” And substitute “ unpainted surfaces and areas within 4.76 mm of unpainted surfaces may be protected.” Delete a. in its entirety and substitute: “a. The paint shows more than 3.18 mm creepage, blistering or loss of adhesion of paint from scribe mark, stamp mark, or edge.” PAGE 32 4.5.5: D
41、elete c. in its entirety and substitute: “c. Any blister exceeds 1.59 mm average diameter.” Delete d. in its entirety and substitute: “d. Any pit exceeds 3.18 mm average diameter.” Delete e. in its entirety and substitute: “e. There are four (4) or more scattered pits exceeding 1.59 mm average diame
42、ter.” Delete f. in its entirety and substitute: “f. There are four (4) or more spots within 645.2 sq. mm.” Delete g. in its entirety and substitute: “g. There are three (3) spots within 645.2 sq. mm in two (2) or more places.” Delete i. in its entirety and substitute: “i. There is evidence of rust u
43、nder the paint (a brown discoloration showing through the paint) in excess of 6.35 mm in diameter total area.” 4.5.6, Delete calculation in its entirety and substitute: “Density g/cc = (1.273) Mass in grams Height (cm) x Diameter2(cm)” 5.1, Change Packaging. to “Packaging (M934 ctg.)” 5.2, Change Pa
44、cking. to “Packing (M934 ctg.)” 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71134 (AR) AMENDMENT 2 PAGE 33 5.3 and 5.4, Delete in their entirety and substitute: “5.3 Packaging (Loaded Projectile Bodies). 5.3.1 Level A. Not Applicable. 5.
45、3.2 Level B. Not Applicable. 5.3.3 Level C. Packing for filled bodies shall be in accordance with the requirements of drawing 12961145. 5.4 Packing (Loaded Projectile Bodies). 5.4.1 Level A. Not Applicable. 5.4.2 Level B. Not Applicable. 5.4.3 Level C. Packing for filled bodies shall be in accordanc
46、e with the requirements of drawing 12961145. 5.5 Marking. Unit packaging for cartridge shall be marked in accordance with the requirements of drawing 12577551. Packing shall be marked in accordance with the requirements of drawing 12577570. Interplant packaging shall be marked in accordance with the
47、 requirements of drawing 12961145.” 5.6 Unitization (M934 cartridge). Unitization procedure shall be in accordance with drawing 19-48-4116/38A for container, ammunition and components on 4-way entry pallets.” The margins of this amendment are marked with an asterisk, or vertical line to indicate whe
48、re changes (additions, modifications, corrections, deletions) from the previous amendment were made. This was done 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 based on the entire content irrespective of the marginal notations and relationship to the last previous amendment. Custodian: Preparing activity: Army-AR Army-AR (Project 1315-0261) 12 Provided by IHSNot for ResaleNo reproduction or ne
