1、3 March 1981 SUPESEDING MIL-P-43304B 16 May 1968 MILITARY SPECIFICATION PACK AND HARNESS ASSEMBLY, PARACHUTISTS WEAPONS AND INDIVIDUAL EQUIPMENT This specification is approved for use by all Departments and Agencies of the Department of Defense. l. SCOPE 1.1 Scope- This specification covers one type
2、 of parachutists weapons and individual equipment pack and harness assembly. 2 APPLICABLE DOCU Water-Vaporproof or Waterproof, Flexible Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Natick, HA
3、 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 alJ.C. GOVERNMENT PRINTING OFFICE 1981-703.023/1977 FSC 8465 6 Provided by IHSNot for ResaleNo rep
4、roduction or networking permitted without license from IHS-,-,-.-I- MIL-P-43304C 84 - 797770b 0372770 T - MIL-P-43304C STANDARDS FEDERAL FED-STD-751 - Stitches, Seams, and Stitchings o HILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by MIL-STD-129 - Marking for Shipment and Stor
5、age MIL-STD-1158 - Commercial Packaging of Supplies and Equipment Attributes DRAWINGS US AWY NATICK RESEARCH AND DEVELOPMENT LABORATORIES 5-4-692 - Pack and Harness Assembly, Parachutists Weapons and Individual Equipment; Assembly Complete and Illustration 5-4-693 - Pack and Harness Assembly, Parach
6、utists Weapons and Individual Equipment; Pack Assembly 5-4-69 7 - Pack and Harness Assembly, Parachutists Weapons and Individual Equipment; Harness Assembly 5-4-91 6 - Pack and Harness Assembly, Parachutists Weapons and Individual Equipment; Attachment of Push Pull Actuator Assembly to Harness and I
7、ndividual Equipment; Drawing and Material List 5-4-1006 - Pack and Harness Assembly, Parachutists Weapons (Figures 1 through 5 are miniature reproductions of referenced drawings and are attached for information only.) (Copies of specifications, standards and drawings required by contractors in conne
8、ction with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 3. REQUIKEMENTS 3.1 Samples. * 3.1.1 Guide sample. Samples, when furnished, are solely for the guidance and information to the contractor (see 6.3). Variation from the
9、 specification may appear in the sample in which case the specification shall govern. * 3.1.2 First article. When specified (see 6.2), the contractor shall furnish a sample for first article inspection and approval (see 4.3 and 6.4). 2 Provided by IHSNot for ResaleNo reproduction or networking permi
10、tted without license from IHS-,-,-MIL-P-43304C 3.2 Materials. Materials shall conform to the requirments specified on Drawing 5-4-1006, to subsidiary specifications, standards and drawings applicable thereto, and as specified herein. 3.3 Construction. Construction details shall conform to the requir
11、ements specified on Drawing 5-4-1006, subsidiary specifications, standards and drawings applicable thereto, and as specified herein. * 3.3.1 Stitches, seams and stitchings. All stitches, seams and stitchings shall be performed using stitch type 301 of FED-STD-751 with a 1/8 inch stitching margin. *
12、3.3.1.1 Automatic stitching Automatic machine stitch patterns providing equal strength, conforming to the overall dimensions and which do not adversely affect form, fit and function of the end item may be utilized in lieu of those specified, upon approval of procuring agency. of equivalency. The con
13、tractor may be required to provide proof I * 3.3.1.2 Type 301 stitching. Ends of all stitching shall be backstitched or backtacked not less than 1/2 inch except where ends are caught in other seams or stitching. Thread tensions shall be maintained so that there will be no loose or tight stitching an
14、d the lock will be imbedded in the materials sewed. * 3.3.1.2.1 Repairs of type 301 stitching. Repairs of type 301 stitching shall be as follows: a. Nhen thread breaks, skipped stitches, run-Offs, or bobbin runouts occur during sewing, the stitching shall be repaired by restarting the stitching a mi
15、nimum of 1 inch back of the end of the stitching. L/ b. Thread breaks, or two or more consecutive skipped or run-off stitches noted during inspection of the item (in-process or end item) shall be repaired by over- stitching. The stitching shall start a minimum of 1 inch in back of the defective area
16、, continue over the defective area and continue a minimum of 1 inch beyond the defective area onto the existing stitching. shall be repaired by removing the defective stitching without damaging the materials and restitching in the required manner. L/ - i/ Loose or excessively tight stitching Wnen ma
17、king the above repairs, the ends of stitching are not required to be backstitched. * 3.3.1.3 Thread ends. All thread ends shall be trimmed to 1/4 inch maxmimum length. 3.3.2 Searing of nylon strap ends. The exposed ends of all nylon webbing and straps shall be seared smooth to prevent fraying. 3.303
18、 - Wax. than 1/2 inch. Ends of tie-tapes and elastic keepers shall be wax dipped not less 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.3.4 Setting of rivets. forcing the rivet through the material or prepunching with a cutting punch not larger
19、 than 1/8 inch diameter. cut or damage the materials. The hole for the rivet shall be formed by either The rivet shall be tightly clinched and shall not 3.4 Assembly. The complete pack and harness assembly, Drawing No. 5-4-692, shall consist of one complete pack, Drawing No. 5-4-693, and one complet
20、e harness, Drawing NO. 5-4-697. 3.5 Function. The two-point release mechanism, including adapter links, assembled to the harness as shown on Drawing 5-4-916, shall effect positive lock and positive release of the adpater links when the knob is operated through the full- stroke cycle. * 3.6 Workmansh
21、ip. The workuianship shall conform to the quality of product established by this specification. applicable acceptable quality levels. The occurrence of defects shall not exceed the 4. QUALITY ASSURANCE PROVISIONS * 4.1 Responsiblity for inspection. Unless otherwise specified in the contract, the con
22、tractor 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 facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the
23、 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 conform to prescribed requirements. * 4.2 Classification of inspection. The inspection requirements specified he
24、rein are classified as follows: a. b. First article inspection (see 4.3). Quality conformance inspection (see 4.4). * 4.3 First article inspection. When a first article is required (see 6.2), it shall be examined for the defects specified in 4.4.2.1j 4.4.2.2, 4.4.2.3 and 4.4.2.4. article. The presen
25、ce of any defect shall be cause for rejection of the first * 4.4 Quality conformance inspection. Unless otherwise specified, sampling for inspection shall be performed in accordance with MIL-STD-105. * 4.4.1 Component and material inspection. In accordance with 4.1, components and materials shall be
26、 inspected in accordance with all requirements of referenced specifications, drawings and standards unless otherwise excluded, amended, modified or qualified in this specification or applicable purchase document. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
27、from IHS-,-,-MIL-P-43304C 4 M 979970b O392993 5 - * 4.4.2 End item examination. 4.4.2.1 Visual examination of pack. The pack shall be examined for the defects listed below. The sample unit shall be one pack, Drawing 5-4-693. The inspection level shall be II and the acceptable quality level (AQL) sha
28、ll be 2.5 major and 6.5 total defects per hundred units. Classification Examine Defect Major Minor Fabric (duck and felt) Nebbing Open seams NOTE : Seams St it Che s St itching Any hole, cut or tear - less than 1/2 inch in any direction 1/2 inch or more in any direction fine filling bar floats Broke
29、n or missing yarns, abrasion mark or Shade bar, coarse filling bar or multiple Any hole, cut, tear, abrasion mark Any exposed end of nylon webbings not Frayed or scalloped edges Color not as specified Not specified type or class seared 1/2 inch or less in length More than 1/2 inch in length A seam s
30、hall be classified as open where one or more stitches joining a seam are broken or where two or more continuous skipped or run-off stitches occur. Raw edges not caught in stitching shall be classified as open seams. Wrong type Wrong type Tension loose, resulting in loose top Tension tight, resulting
31、 in puckering One stitch per inch less than minimum Two or more stitches per inch less than or bottom thread of material specified minimum specified X X X X X X X X X X X X X X X X X 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ _- _. MIL-P-q33
32、04C 4 W 7779706 0372774 7 W MIL-P-43304C Classification Examine Defect Major Minor Stitching (contd) One stitch per inch more than maximum specified Two or more stitches per inch more than maximum specified Any required row of stitching missing or incomplete (except on box stitching) Thread breaks n
33、ot overstitched as specified Ends of stitching not backstitched 1/2 inch where required Needle chews Stitch patterns not as specified (unless otherwise authorized, see 3.3.1.1) Box stitching Straps Suspender A Suspender C Hardware Body One row of stitching omitted Two or more rows of stitching omitt
34、ed Ends not square Any strap not one piece construction, i*e., spliced Any exposed strap end not seared Felt pad missing Felt pad on wrong side More than one piece of webbing, Ends not square spliced Ends not square More than one piece of webbing, spliced Not specified type or size Burrs, slivers or
35、 sharp edges Bent, broken or otherwise damag Finish omitted or incorrect i.e., i.e., d Adapter attached with friction grip facing wrong direction Corner not formed as specified More than two pieces of duck Except as otherwise covered, any part omitted or not located as specified 6 X X X X X X X X X
36、X X X X X X X X X X Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-P-43304C Clac s if icat ion Examine Defect Major Minor Rivets Rivet and washer not securely clinched or clinched too tight cutting fabric Rivet nct located inside stitch pattern
37、 as specified X Washer omitted X Washer on wrong side X X Marking Special marking missing, incorrect, illegible, improper location or size, facing wrong direction, or color not as specified X color not as specified -x Workmanship Thread ends not trimmed as specified X Grease, oil, ink or other stain
38、 X Identification marking omitted, incorrect, illegible, improper location, or size or 4.4.2.2 Visual examination of harness. The harness shall be examined for the defects listed below. The sample unit shall be one harness. The inspection level shall be II and the AQL shall be 2.5 major and 6.5 tota
39、l defects per hundred units. Classification Examine Defect Major Minor Fabric (duck) Any hole, cut or tear, weak places or broken yarns Color not as specified Not specified type or class Webbing and tape Any hole, cut, tear, abrasion, weak place, broken or missing yarns, or edges frayed or scalloped
40、 (unless otherwise classified) Any exposed end of nylon webbings not seared Color not as specified Not specified type or class Open seam 1/2 inch or less in length More than 1/2 inch in length t 7 X X X X X X X X X Provided by IHSNot for ResaleNo reproduction or networking permitted without license
41、from IHS-,-,-Examine Defect Open seams (cont Id) Runoffs Seams Stitches St itching Box stitching Leg strap Y m 9799 E 906 0392996 om Classification Major Minor NOTE: A seam shall be classified as open where two or more stitches joining a seam are broken or where two or more continuous skipped or run
42、-off stitches occur. Raw edges not caught in stitching where required shall be classified as open seams. On double stitched seams, a seam shall be classified as an open seam where either one or both sides of the seam are open. (Classify under open seams) Wrong type Wrong type Tension loose, resultin
43、g inloose top Tension tight, resulting in puckering One stitch per inch less than minimum Two or more stitches less than minimum One to two stitches in excess of maximum Two or more stitches in excess of maximum or bobbin thread of fabric specified specified specified specified Any required row of s
44、titching missing or incomplete (except on box stitching) Thread breaks not overstitched 2 inches as specified Ends not backstitched 1/2 inch where required Needle chews One row of stitching omitted Two or more rows of stitching omitted Buffer omitted Adapter incorrect type Adapter attached with fric
45、tion grip facing Turn-under reversed Webbing spliced Free end not square Not attached as specified on Drawing wrong direction 5-4-697 8 Q X X X X X x X X X X X X X X X X X X X X X Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Classification Examine
46、 Defect Major Minor Strap A Release strap Leg strap guide Pocket Veb straps E, H, L Web strap and handle Handle Web strap D Snap chape Keeper pin strap Pocket tie tape Buffer omitted Release fastener assembly reversed Top of stitch pattern not through reinforcement “G“ Less than five thicknesses at
47、rolled end Link adapter incorrect type Link adapter not attached as specified Elastic keeper missing Snap incorrect type Folded edge not facing direction specified Located on wrong side Adapter attached with friction grip facing End not square wrong direction Adapter incorrect type Adapter attached
48、with friction grip facing wrong direction Handle fold not as specified on Drawing 5-4-697 End not square Fold reversed Buffer omitted “V“ ring incorrect type “V“ ring missing “V“ ring incorrectly attached Snap hook incorrect type Snap hook incorrectly attached Keeper pin missing Strap color incorrec
49、t Strap incorrectly attached Tape missing Ends not waxed Not attached as specified 9 X X X X X X X X X X X X X X X X X X X X X X X X X X X Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_I_I_-_- MIL-P-43304C 84 W 799770b 0392998 4 a MIL-P-4 3 30 4C Classification Examine Defect Major Minor Hardware Fractured, bent or dam
