1、$- 3749 MIL-C-43438D 18 December 1981 SUPERSEDING MIL-C-43438C 11 April 1974 MILITARY SPECIFICATION CRIMPER, BLASTING CAP, M-2, PLIER TYPE, W/FUSE CUTTER This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers
2、 a plier type, manually operated crimping and fuse cutting tool. 2. APPLICABLE DOCUMENTS 2.1 Issues of documents. The following documents, o the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein: SPECIFICATION FED
3、ERAL PPP-P-40 - Packaging and Packing of Hand Tools STANDARDS FEDERAL FED-STD-66 - Steel: Chemical Composition and Hardenability MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes I Beneficial comments (recommendations, additions, deletions) and any perti- nent data w
4、hich may be of use in improving this document should be addressed to: Natick, MA Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. US Army Natick Research and Development Laboratories, 01760 by using the self-addressed Standardization Document I FSC 5120 -_ r- P
5、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- RIL-C-4393D 51 M 979990b 0369635 7 MIL-C-4343 8D DRAWING US ARMY NATICK RESEARCH AND DEVELOPMENT LABORATORIES. 12-1-162 - Crimper, Blasting Cap, M2, Plier Type, W/Fuse Cutter, Assembly and Details (A mi
6、niature copy of Drawing No. 12-1-162 is attached for information purposes only ) (Copies of specifications, standards, and drawings required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2
7、 Other publications. The following documents form a part of this specification to the extent specified herein. in effect on date of invitation for bids or request for proposal shall apply: Unless otherwise indicated, the issue AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) E 18 - Rockwell Hardnes
8、s and Rockwell Superficial Hardness of Metalic Materials (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), the contractor shall furnish a sample for fi
9、rst article inspection and approval (see 4.3 and 6.3). 3.2 Material and components (see 6.5). Materials and components shall be as specified herein and on applicable drawings. shall be of the quality normally used by the manufacturer in his crimper, provided the complete item complies with all provi
10、sions of this specification. Materials not definitely specified 3.2.1 Steel. Steel shall conform to the chemical composition of AIS1 1045 of FED-STD-66. * 3.3 Design and construction. The crimper shall be in accordance wih the design and dimensions shown on Drawing 12-1-162. 3.3.1 Fuse cutter. The j
11、aws, operating in unison, shall be capable of cutting militaryblasting time fuse, M700, (commercially known as military safety fuse), and detonating cord without visible evidence of crushing or fraying of the fabric when tested as specified in 4.5.1. 2 Provided by IHSNot for ResaleNo reproduction or
12、 networking permitted without license from IHS-,-,-MIL-C-4343D 51 W 7797706 03b7636 7 *-* MIL-C-43438D 3.3.2 Crimper section. The jaws, operating in unison, shall form a crimper section. cap and the nonelectric commercial No. 8 blasting cap to military blasting time fuse, M700, by indenting a groove
13、 completely around the cap. show no evidence of cracks or splits, and shall not pull loose when tested as specified in 4.5.3. The crimper shall be capable of crimping the nonelectric military blasting The crimped cap shall 3.3 Hardness. The jaws and handles shall be hardened in accordance with the r
14、equirements of Drawing 12-1-162 when tested in accordance with 4,5.2. 3.4 Identification marking. manufacturers identification. The crimpers shall be permanently stamped with the 3.5 Government furnished property. The following property, in the quantities required, will be furnished by the Governmen
15、t (see 6.4): Item No. 1 2 DescriDtion Fuse, Blasting, Time M700 Cap, Blasting, Nonelectric, MO97 Identification NSN 1375-00-028-5246 NSN 1375-00-783-8043 3.6 Workmanship. The crimper shall be free of chips, burrs, slivers, dirt, grease, rust areas, areas of no finish, embedded foreign matter, and sh
16、arp corners and edges except for corners and edges of the screwdriver blade and edges of the cutter and punch tip. and punch tip shall be visually sharp. free from nicks or indentations. Corners and edges of screwdriver blade and edges of cutter All edges of the crimper shall be smooth and 4. QUALIT
17、Y ASSURANCE PROVISIONS * 4.1 Responsibility for inspection. Unless otherwise specified in the contract, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract, the contractor may use his own or any other fac
18、ilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services c
19、onform to precribed requirements. 4.2 Classification of inspection. The inspection requirements specified herein are classified as follows: a. b. First article inspection (see 4.3). Quality conformance inspection (see 4.4). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted witho
20、ut license from IHS-,-,-MIL-C-4343 8D * 4.3 First article inspection. When a first article is required (see 6.2), it shall be examined for the defects specified in 4.4.2.1 and 4.4.2.2 and tested as specified in 4.5.1, 4.5.2, and 4.5.3. The presence of any defect or failure of any test shall be cause
21、 for rejection of the first article. 4.4 Quality conformance inspection. Unless otherwise specified, sampling for inspection shall be in accordance with MIL-STD-105. 4.4.1 Component and material inspection. In accordance with 4.1, components and materials shall be inspected in accordance with all th
22、e requirements of referenced specifications, drawings, and standards unless otherwise excluded, amended, modified, or qualified in this specification or applicable purchase document. * 4.4.1.1 Component testing. Prior to assembly, the crimper shall be tested in accordance with 4.5.2 to determine com
23、pliance with 3.3.3. one jaw and handle (punch end) and one jaw and handle (screwdriver end). shall be all of the jaw and handle sections offered for inspection at one time. inspection level shall be S-2 and the acceptable quality level (AQL) shall be 2.5 defects per hundred units. The sample unit sh
24、all be The lot The * 4.4.2 End item inspection. The end item shall be examined in accordance with 4.4.2.1, 4.4.2.2 and 4.4.2.3. crimper. The sample unit shall be one complete crimper. The lot size shall be expressed in units of one * 4.4.2.1 Visual examination. The end item shall be examined for the
25、 defects listed in table I. The inspection level shall be II and the AQL shall be 2.5 major and 6.5 total (major and minor combined) defects per hundred units. TABLE I. Visual defects Classification Examine Defect Major Minor Finish Construction Marking Workmanship Not specified finish X Any rust or
26、 imbedded foreign matter Area of no finish (except where staked or peened) X grease, or dirt X X Not free of burrs, slivers, chips, Crimper not smooth Part missing Missing, illegible, or incorrect Corners and edges of screwdriver blade, edges of cutter, and punch tip not sharp 4 X X X X Provided by
27、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-4343D 51 M 7777906 036763 2 m MIL-C-43438D TABm I. Visual defects (contd) Classification Examine Defect Major Minor Workmanship Nicks or indentations on edge of (cont * d) crimper X Face of detent tapered X M
28、achine screw not staked or peened for a minimum of one thread X Handle rides over the detent x 4.4.2.2 Dimensional examination. - Examination shall be made of the crimpers for compliance with the dimensional requirements specified, including the crimp opening in the closed position. Any dimension no
29、t meeting the specified requirements shall be classified as a defect. 1.5 defects per hundred units. 4.4.2.3 End item testing. The inspection level shall be S-3 and the AQL shall be The end item shall be tested as specified in 4.5.1 and 4.5.3 for conformance to the requirements in 3.3.1 and 3.3.2. s
30、hall be S-2 and the AQL shall be 2.5 defects per hundred units. The inspection level 4.4.3 Packaging inspection. Examination of packaging requirements shall be in accordance with PPP-P-40. 4.5 Methods of inspection. 4.5.1 Fuse cutter sharpness. The fuse cutter shall be used to cut ten, 6-inch pieces
31、 of military blasting time fuse, M700. with 3.3.1 shall be classified as a defect. Failure of one or more cuts to comply 4.5.2 Hardness. Hardness tests to determine Compliance with 3.3.3 shall be in accordance with ASTM E 18. crimper areas and punch and screwdriver ends. requirements shall constitut
32、e a defect. Four readings shall be made; one each on the cutter and Any reading not within specified 4.5.3 Crimper test. Ten 6-inch long pieces of military blasting time fuse, M700 and ten unarmed (empty) military nonelectric blasting caps or unamzd (empty) nonelectric commercial No. 8 blasting caps
33、 shall be used to determine compliance with 3.3.2 as follows: (a) Ten 6-inch long fuses, cut in accordance with 4.5.1, shall be inserted into ten unarmed (empty) caps in the normal manner and crimped with the crimper. with the crimping requirements of 3.3.2. constitute a defect. The crlmp shall be e
34、xamined for compliance Any nonconformance shall 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-4343D 51 7977706 0369b37 4 MIL-C-43438D (b) The assembled fuse and cap of (a) above shall then be pull tested using an 18-pound load to determine
35、 movement of fuse in the crimped cap for compliance with the pull requirement of 3.3.2. Any nonconformance shall constitute a defect. 5. PACKAGING 5.1 Preservation, packaging, packing, and marking. Preservation, packaging, packing, and marking for level A, B, or C shall be in accordance with PPP-P-4
36、0 (see 6.2). 6. NOTES 6.1 Intended use. The crimper is intended for use in manually cutting safety fuse and for crimping blasting caps to the fuse. 6.2 Ordering data. Procurement documents should specify the following: (a) Title, number and date of this specification. (b) When first article is requi
37、red (see 3.1). (c) Selection of applicable levels of preservation, packaging and packing (see 5.1). * 6.3 First article. When a first article is required, it shall be inspected and approved under the appropriate provisions of DAR 7-104.55. be a preproduction sample. contracting officer should includ
38、e specific instructions in all procurement instruments regarding arrangements- for inspection and approval of the first article. The first article should The first article should consist of one unit. The * 6.4 Government furnished property. The contracting officer should arrange to furnish the prope
39、rty specified in 3.5. quantities required, the shipping address and the ultimate destination of the property. are stocked at US Army Armament Materiel Readiness Command, DRSAR, DSDAG, Rock Island, IL 61299. He should cite the contract number, He should specify that inert caps and fuses should be shi
40、pped. The items * 6.5 Recycled material. It is encouraged that recycled material be used when practical as long as it meets the requirements of the specification (see 3.2). 6.6 Changes from previous issue. The margins of this specification are marked with an asterisk to indicate where changes (addit
41、ions, modifications, corrections, deletions) from the previous issue 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 requirments of this. document based on
42、 the entire content irrespective of the marginal notations and relationship to the last previous issue. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-C-V3438D 51 7797906 03b7640 O = Custodians: Army - GL Air Force - 99 MIL-C-43 43 8D Prepar
43、ing activity: Army - GL Project No. 5120-0990 . Review activity: Army - AR User activity: .Navy - MC 7 *O.S. GOVERNMENT PRINTING OFFICE: 1982-605-022/412 . - .c A Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-C-4343D 51 7977906 0367641 2 a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
