1、MIL-F-103bLA 13 m 7777706 0272778 2 m i- _ MIL-b-10361A 10 JUNE 1962 SUPERSEDING 19 JUNE 1950 MILF-10361 (ORD) MILITARY SPECIFICATION . FUZE, BASE DETONATING, M58, LOADING, ASSEMBLING ANI) PACKING - This specijication was approved by the Departments of the Armg, the Naw, and the Air Force for the we
2、 of procurement services of the respective Departments. 1. SCOPE 1.1 This specification covers loading, as- sembling, and packing of .M58 base detonat- ing fuze, for use in 37-mm M63 HE shell. 2. APPLICABLE SPECIFICATIONS, STANDARDS, DRAWINGS, AND PUBLI- CATIONS 2.1 The following drawings and all dr
3、aw- ings and specifications referenced thereon, of the issue in effect on date of invitation for bids, form a partof this specification: DRAWINGS ORDNANCE CORPS 73-1-174-Fuze, Base Detonating, M58, 81-3-30 -Machine, Jolt Testing, For 81-3-35 -Machine, Jumble Testing, 8143-37 -Fixture For Jumbling Fu
4、zes, Assembly and Details. Assembled Fuzes, Assembly. Assembly. Assembly and Details. (Copies of specifications and drawings required by contractors in connection with specific procurement functions should be obtained from the procuring agency or as directed by the contracting officer.) 3. REQUIREME
5、NTS 3. MateriaIlMaterials and parts shall be in accordance with applicable specifications and drawings. 3.2 The fuze shall meet all requirements specified on the drawings and ni applicable specifications. 3.3 Jolt and jumble.-The fuze shall with- stand 1,750 jolts in each of the three posi- tions of
6、 the jolt machine; and after com- pletionf the jolt test, the fuzes used in the jolt test shall withstand 3,600 complete revolutions in the jumble machine, without having any: (a) Explosive elements explode; (b) Fuze come apart, (c) Fuze partially or fully arm, (d) Inner parts, including the detonat
7、or, broken, deformed or displaced in such a manner as to make the fuze unsafe to handle or dangerous to fire. (Note.-Broken tetryl pellets will not be a cause for rejection of the lot of fuzes.) 3.4 Proving Ground Test.-No premature burst shall occur and not more than two sam- ple fuzes shallfail to
8、 cause the projectile to burst with high order detonation within 10 feet in rear of the screen. 3.5 Workmanship.-All parts shall be free of chips, dirt, grease, and other foreign ma- terial. The cleaning method used shall not be injurious to any of the parts nor shall the parts be contaminated by th
9、e cleaning agents use$ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ I -_- j MIL-F-L3hLA 23 W 777770b 0272777 4 W O MIl?-1036lA 4. SAMPLING, INSPECTION, AND TEST PROCEDURES 4.1 Lot.-A lot shall consist of fifty thou- sand fuzes, maximum. A smalle
10、r quantity may constitute a lot at the discretion of the inspector. Two thousand plus or minus 600 shall constitute the first lot manufactured on any contract except when a new contract im- mediately follows the manufacture of satis- factory material of the same character. 4.2 Sampling.-All samples
11、shall be se- lected by the inspector. Forty fuzes shall be selected from each lot for tests as specified in r the following paragraphs. Sampling of component materials is prescribed in para- graphs covering tests of the materials. 4.3 1nspeEfion.-Inspection shall be as spec- ified in Specification -
12、MEL-G-2550. 4.4 -Nonarming test of. resistance ring.- Twenty subassemblies each consisting of fir- ing pin, resistance ring, and sleeve, selected by the inspector from each lot before assem- bling the fuzes, shall be tested as follows: 4.4.1 Procedure.-Place each subassembly on a flat steel base, ce
13、ntrally over a hole one- fourth inch in diameter by not less .than three-eighths inch deep, in the base and ap- ply axially to the base of the firing pin the nonarming load specified on the drawing. Apply the load at a rate not to exceed one- eighth inch per minute. If the resistance ring in any sub
14、assembly opens and permits the firing pin to move downward until the resist- ance ring engages in the groove of the firing pin, the resistance ring shall be konsidered to have armed. 4.5 Arming test of resistance ring. 4.5.1 Procedure.-After completion of the nonarming tes, subject the 20 subassembl
15、ies to test as prescribed in 4.4 except that the load shall be the arming load specified on the drawing. Each subassembly of which the resistance ring does not open and permit fir- 2 ing pin to move downward until the resist- ance ring engages in the groove of the firing pin when the load is applied
16、 shall be con- sidered to have failed to arm. 4.5.2 Retest.-A retest, using double the number of samples used in. the original.test, may be made if resquested by the contractor, provided not more than four assemblies fail to arm at the prescribed arming load. 4.6 Determination of graphite content of
17、 booster pellets.-Ten sample booster pellets selected by the inspector from each lot before assembling the fuzes shall be tested as follows : 4.6.1 Procedure-Remove the outer sur- face from the booster pellets to obtain a com- posite sample of about 5 gms. from the inte- rior of the booster pellets.
18、 Weigh the sample accurately and transfer to a 250-ml. beaker. Add 100 ml. of acetone and heat to dissolve the tetryl. Filter the solution through a tared filtering crucible. and wash the residue in the crucible with two 25 ml. portions of acetone. Dry the crucible at 100C. for one hour; cool in a d
19、esiccator, and weigh. Calculate the in- crease in weight as percentage of graphite. 4.6.2 Retest.-A retest, using double the number of samples used in the original test, may be made if requested by the contractor, provided the analysis indicates that the graphite content exceeds the amount specified
20、 on the drawing by not more than 0.25. 4.7 Jolt and jumble tests of fuze. 4.7.1 Jolt.-Assemble each of ten of the sample fzes to an adapter (fig. 1) and then assemble to a Jolt Testing Machine, Drawing 81-3-30. Give each fuze 1,750 jolts in each of the three positions. 4.7.2 Jumble. - After completi
21、on of the jolt test, subject each of the fuzes used in the jolt test to a jumble test. Assemble in jumble fixture (fig. 2) and place, one at a time, in Jumble Machine, Drawing 81-3-35. Give the machine 3,600 complete revolutions at the Provided by IHSNot for ResaleNo reproduction or networking permi
22、tted without license from IHS-,-,-j flIL-F-103bLA 13 777790b 0272780 O 9 _- .- speed specified on Drawing 81-3-35. Baiaine the fuzes upon completion of this test;. - 4.7.3 Retest.-A retest, using double .the number of samples used- in the original test, may be ma-de if requested-by the contractor, p
23、rovided none of the explosive elenients exT. plode and not more than one fuze comes apart, is partially or fully armed, or has any inner- parts, including the . detonator, broken, de- formed, or displaced in such a manner as o make the fuze unsafe to handle or dangerous to fire. 4.8 Proving ground t
24、est. 4.8.1 Procedure.-Assemble the remaining 30 sample fuzes to complete rounds of 37-mm. M63 H.E Shell. Fire the rounds as indicated below, in the 37-mm Gun, M6, or in a model of the 37-mm. Gun having the same ballistics, against a 6-inch wood bursting screen placed 300 to 400 feet from the muzzle
25、of the gun: GzLn Chamber pressure ami muzzle velocity No. of Roimds (appro*. 1 10 _ 42,000 p. s. i. 20 _- 2,600 feet per second 4.8.2 -A retest, as .,provided .for in 4.8.2, may.be made if requested .by the contractor, using 60 fuzes. The lot shall be considered acceptable on retest provided no prem
26、ature burst occurs and 58 of the 60 fuzes cause the projectile to burst with high order detonation within 10 feet in rear of the screen. 5. PREPARATION FOR DELIVERY 5.1 Packaging and packing. - Packaging and packing shall be as specified on the ap- plicable drawing. 5.2 Labeling and marking.-Labelin
27、g and marking shall be as specified on the applica- ble drawing. 5.3 Data cards.-Data cards, 5 by 8 inches, made of commercial manila tag board, ap- proximately 200 pounds ream weight, shall be prepared for each Iot of accepted fuzes to provide the information specified below. Quantities (approximat
28、ely 50 cards per rot) . and distribution of data cards shall be in ac- cordance with instructions issued by the Off ice, Chief of Ordnance. AMMUNITION DATA CARD Kind: -Ammunition Lot No. Dwg. No.* Spec. No.* Metal parts manufactured by Loaded and assembled by Date Contract No. Order No. Packed in a
29、box. Remarks : Certified by , Inspector. Print here name of inspector, district, arsenal, or Ioading plant, and sub-district, where spplicable. Quantity in Lot Lot No. * Include revision and amendment. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
30、,-I flIL-F-LCl3bLA 13 m 99999Clb 0292982 2 mk _ - ML-F-lQ361A . 6. NOTES . Notice.-This specification, together with specifi- cations and drawings pertaining to it and bearing 8 “Notice” of similar restrictions, is intended for use only in connection with procurement by the United States Government;
31、 and shall not be reproduced either wholly or in part except when authorized in used for any other purpose except when specifically authorized by the Chief of Ordnance. Cnstodian: 6.1 The contract should list all material to be furnished by the contractor. Ordinarily, the contract should require the
32、 loading and asiembling contractor to furnish the metal connection with procurement, nor be Parts for the detonator assembly, Drawing 73-2-185, Piecemark A. 6.2 Premature Burst.-A premature burst is a functioning of the shell in the gun bore Army-Ordnance Corps. or in fight before impact. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
