1、. - MIL-P-L1824C 13 9799906 0293820 5 -. XIL-P-U6;24S( WJ) 16 Apri 1968 , z I ? MILITAY SPECIFICATIOI? PRmER, NO. 142 1. NOPE 1.1 This specification covers one type of fuze primer. 2. AFPLIcABI;EDoc!uxEms 2.1 Goverfment docurrrents. The following documents, of the issue in - effect on ate of invitat
2、ion for bids or request for proposal, form a part ofthis specification to the extent specified herein. IT-W-572 = Wood-Preservative; Water-Repellant. MIEB-2427 - Boxes, Ammunition Packing; Wood, olaile. EmarmDS MULSTD-i05 - Sampling Procedures an Tables for Inspection by Attrsbutes. MIL-STD-129 = Me
3、sking for Shipment and Storage. MIEcTD-U68 - Tut Ranbering for bunition. DRAwNGS * us ARMY MUNITIONS cowm ? I EX?GEI?D ATzsE%A, DL22-35-27 - Primer, mo. 142. (Copies of specifications, stanards, drawings, and publications required by suppliers ia connection with specific procurement functions should
4、 be obtaned from the procuring activity or as directed by the conkracting officer. ) FSC 1375 *A Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2.2 unit cam- posed of charger and press operator, *om the same materials, during the same daily work shi
5、ft, for no more than five consecutive days. 4.2.2 Sampling. 4.2.2.1 For exanination. Smpling shall be conducted in accordance with HIL-STD-105. 4.2.2.2 For test. A sample of 475 primers shall be rendomly taken If the lot represented is accepted, unused primers in from each lot. the sample may be ret
6、urned to the lot. d 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.2.3 Inspection procedure. 4.2.3.1 For enation. Cample primers shall be examined in accordance witn the classification of defects and with MIL-STD-105. 4.2.3.2 For test. Sample pr
7、imers chan be tested in accordance Kith 4.2.4. If fires occur at 2 inches, the lot shaU be rejected. is greater than 19 inches, tne lot shall be rejected. If misfires occur at 19 inches, the lot shall be rejected. If B + 5s 4.2.3.3 Classification of defects. (a) -Mer, No. 1-1/2 assembly (Dwg (222-35
8、-27). Cat eaores Defects Critical: Bone defined Major: AQL O . 40 percent defect ive 101 Diamet er incorrect 102 Depth incorrect 103 Wormship ( 3.5 1 4.2.4 Sensitivity test. The primer sensitivity shall be determined by a drop test, using a test fixture consisting of a steel die to hold the primer,
9、a firing pin having a spherical radius of 0.20 inch, a steel ball drop weight weighing 1.94 i- 0.02 ounce, and supports as necessary to control the fixture (see fiGe i). The test shall be conaucted as follows: 4.2.4.1 Procedure. Insert the primer into the die by hand, adjusting it so that aY blows l
10、ie within 0.02 inch of the center of the primer being tested. each snd one group of 50. dropping the steel ball from a height of 10 inches, measure6 as the distance between the to? of the firing pin and the bottom of the ball, Recor te number of misfires which OCCLW see 4.2.4.2(a). Coatinue testing
11、groups of 25 primers at one-inch increments until a height is reached at which dl primers in a group fire. If the height at which ail primers fire is 19 inches or less, continue testing groups of Firners, bopping the steel bau *om a height of 9 inches, ana then at one-inch decrements, until a height
12、 is reached at wnicl all primers in a group misfire. Ir a fire or fires occurs at 3 inches, test the group of 50 primers at 2 inches. Divide the sample of 475 primers into i7 groups of 25 Test the first group of 25 primers by 4.2.4.2 Calculations. Calculate H average (E) and the stanuard deviation (
13、s) -as follows: 4 / =- -? ,- a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MiL-P-Il62 4c ( MU) (a) (for example) in table I. Tabulate the ata from the test into columns as shown %ble I. Primer sensitivity test . 1 :2 3 4 5: . : Title :Height of :
14、Number of:Fraction : Correction : Column : : Number : shipping containers shall be marked in accordance with D22-35-36. 5.3.2 nternlant shipment (see 6.3). In addition to my special marking required by the contract or order, unit packages and shipping containers shal be mzrked In accordance with the
15、 domestic shipping requirements as specified in MIL-sITD-129. 6. NPES 6.1 Intened use. The primer is a component of one type of fuse used In floating smoke pots and some grenades. 6.2 6.3 supply Ordering data. Procurement documents should specify the following: interplant shipment. Packaging that do
16、es not enter the military system. Typical are shipments from a vendor to a contractor, a or a supplier to a military arsenal or plant. subcontract OT Custodian: 8 Preparing activity: . Arw - Project No 1375-AO78 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
