1、u MIL-S-V3828A 8V 779790b 0396337 2 MIL-S-43828A 7 January 1983 SUPERSEDING MIL-S-43828 22 January 1973 MILITARY SPECIFICATION STRAP, WEBBING, CARGO TIE DOWN, LIGHTWEIGHT PACK FRAME, M-1972 This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE
2、1.1 This document covers the requirements for a strap consisting of nylon webbing, a metal fastener and a metal hook. 2, APPLICABLE DOCllEiWS 2.1 Government documents. Unless otherwise specified, the following documents of the issue ia effect on date of invitation for bids or request for proposal, f
3、orm a part of this document to the extent specified herein: SPECIFICATIONS FEDERAL V-T-285 - Thread, Polyester UU-P-268 - Paper, Kraft, Wrapping DDD-L-20 - Label; for Clothing, Equipage, and Tentage, PPP-B-636 - Boxes Shipping , Fiberboard (General Use) MILITARY MiL-E-480 - Enamel, Baking, Phenol -
4、Or Urea-Formaldehyde MIL-C-13924 Coating, Oxide, Black, For Ferrous Metals MIL-W-43668 - FJebbiG, Textile, Bulked Nylun Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be adressed to: US Army Natick Research and
5、 Development Laboratories, Natick, MA 01760 by using the self-addressed Standardization Document Improvement Proposal (OD Form 1426) appeariw at the end of this document or hy letter. FSC 8465 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-438
6、2A 4 7777706 0376338 4 MIL-S-43828A STANDARDS PHDRKAL FED-STD-751 - Stitches, Seams, and Stitchings MILITARY NIL-STD-105 - Sampling Procedures and Tables for Inspection by MLL-STD-129 - Marking for Shipment and Storage MIL-STD-147 - Palletized Unit Loads MI,-STU-1138 - Commercial Packaging of Suppli
7、es and Equipment Attributes DR4WINGS US AK. NAIICK RESEARCH AND DEVELOPMENT LABORATRIES 2-2-313 - Strap, Webbing, Cargo Tie Down, Lightweight Pack Frame, ?4-1972 (Copies of documents required by manufacturers in connection with specific acquisi- tion functions should be obtained from the contracting
8、 activity or as directed by the contracting officer.) 2.2 Other publications. Unless otherwise specified, the following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this document: to the extent specified herein. AFISRICAN SOCIETY FOR TESTING
9、 AND MATERIALS (ASTM) 3 633 - Electrode Posited Coatirgs of Zinc on Iron and Steel (Application Eor copies should be addressed to the American Society for Testing and (Technical society and technical association documents are generally available for Naterials, 1916 Race Street, Philadelphia, PA 1910
10、3.) reference from libraries. Federal agencies . ) In the event of a conflict between the text of this docu- ment and the references cited herein, the text of this document shall take precedence. They are also distributed among technical groups and using . 2.3 Order of precedence. 3 . REQUIREI.IENTS
11、 3.1 Guide sample. Guide samples of the end item, when furnished, are solely for guidance and information to the contractor. in the sample, in which case this document shall govern. Variations from this document may appear 3.2 First article. When specified, a sample shall be subjected to first artic
12、le inspection (see 4.3, 6.2 and 6.4). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-lt3ZA BY 7797706 O376337 6 MIL-S-43828A - - - 3.3 ilaterials. faterials specified shall conform to the applicable documents and requirements specified herei
13、n (see 6.5). 3.3.1 Nebbing , nylon. The one inch nylon webbing shall conform t type III, Olive Drab 7 of HIL-N-43668. 3.3.2 llread, polyester. The thread shall be type I, class 1, sub-class A or S, size F of V-T-285. apply Xhen sub-class R thread is used the non-wickiap; requirements-shall not 3.3.2
14、.1 Calor. The thread shall be dyed Olive Drab S-1 (C.A. 66022) and shall show Fastness to wentlie1:i.n:; equal. to or better than the standard sample. 3.3.3 Fastener, steel. lhe steel fastener shall conform to Arizona Gear and Manu- facturing Co., Part No. K415, Xev-Lok; Acorn Metal Products Co., Pa
15、rt Nos. C-103 and A- 101; u“. E. Prentice Manufacturing CO., Part Na. 3837, or equal, (see 6.6). Prior to the use of the “or equal“ item, the contractor shall submit the item to the contracting officer with supporting data for approval. 3.3.3.1 Finish. The rivets sha1.l be given a black oxide coatin
16、g conforming to class 2, 3 or 4, as applicable, of 14IL-C-13924. The two lever components of the fastener shall be given a phosphate treated zinc plate conforming to type IV (with a minimum thickness of 13 micrometers) of ASP E 633 followed by baked enameling. shall conform to type I or II of MIL-E-
17、480, color black. The coating on all components shall be performed prior to assembly and shall level out to a smooth and uniform film without. orange peel, wrinkles, drops, streaks or areas of no film (see 4.4.1.1). The bake enamel 3.3.4 Hook, steel. The steel hook shall conform to Arizona Gear and
18、Manufacturing Co. Fart No, K465; Acorn Xetal Products Co. Part No. B-102; or G. E. Prentice Manu- facturing Co. Part No, 3837 or equal (see 6.6). Prior to the use of the “or equal“ item, tlie contractor shall submit the item to the contracting officer with supporting data for approval. The hooks use
19、d with the fasteners specified in 3.3.3 shall be Made by the fastener manufacturer. T 3.3.4.1 Finish. The finish for the hook shall be as specified in 3.3.3.1 for the fastener lever components (see 4.4.1.1). 3.4 Construction, The construction of the strap shall conform in all respects to Qrawing 2-2
20、-313 and as specified herein. 3.4.1 Stitching, machine. All stitching except bartacking shall conform to FED-STD-751, type 301 with 6 to 8 stitches per inch. 3.4.1.1. Type 301 stitching. Ends of all stitching shall be backstitched or over- stitched not lass than 1 inch. Thread tension shall be maint
21、ained so that there will be no loose stitching resulting in loose bobbin or top thread, or excessively tight stitch- ing resulting in puckering of the material sewn. The lock shall be embedded in the iaat erials sewn. 3.4.1.1.1 Repairs af type 301. stitching. Repairs of type 301 stitching shall be a
22、s follows : a. Xhen thread breaks or bobbin run-outs occur during stitching, the stitching L/ shall Be repaired by restarting the stitching a minimum of one inch (1/2 inch for W-W stitching) back of the end af the stitching. .3 68 p.- 1- , *- - . .A- . - -37- - - -J - . Provided by IHSNot for Resale
23、No reproduction or networking permitted without license from IHS-,-,-MIL-S-43828A 84 W 9999906 0396340 2 MIL-S-43828A 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 overstitching. The stitchin
24、g shall start a minimum of one inch in back of the defective area, (1/2 inch for W-W stitching) continue over the defective area and continue a minimum of one inch (1/2 inch for W-W stitching) beyond the defective area onto the existing stitching. Loose or excessively tight stitching shall be repair
25、ed by removing the defective stitching, without damaging the materials, and restitching in the required manner. - i/ i/ When making the above repairs the ends of the stitching are not required to be backstitched. 3.4.1.2 Automatic stitching, Automatic stitching machines may be used to perform any of
26、 the stitch patterns provided the requirements for the stitch pattern, stitches per inch,-and size and type of thread are met; and at least three.tying, overlapping or backstitches are used to secure the ends of the stitching. 3.4.1.3 Rartacking. Bartacks shall be 3/4 + 1/8 inch long, 1/8 i- 1/32 in
27、ch wide artacks shall-be free from thread breaks and loose and shall contain 42 stitches. stitching . 3.4.1.4 Thread ends, All thread ends shall be trimmed to 1/4 inch maximum leng th . 3.4.2 Fusing of nylon webbing ends. All ends of nylon webbing shall be fused. The apparatus used to fuse the webbi
28、ng ends shall be capable of providing sufficient heat to provide a sinootli edge with the cut ends of the webbing yarns all fused tog et her. V 3.5 Marking. The identification marking shall conform to type IV, class 5 of DDD-L-20 and shall be set ,in two lines and located as shown in Drawing 2-2-313
29、. The letters “US“ shall. be applied in the location and in the size characters indicated on the drawinc and shall conform to type IV, class 9 of DDD-L-20. Fastness of the class 9 inarking shall be as specified for class 5 markings. 3.6 Replacement of defective components. During the spreading, cutt
30、ing and manufacturing process, components having material defects or damages that are classified as defects in 4.4.2.1 and 4.4.2.2 shall be removed from production and replaced with non-defective and properly matched components. 3.7 Workmanship. The finished strap shall conform to the quality of pro
31、duct established by this document. applicable acceptable quality levels. The occurrence of defects shall not exceed the 4, QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection, Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance o
32、f all inspection requirements as specified herein. Except as otherwise specified in the contract or 4 ipr Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_- o a a z flIL-S-Y3828A BY 77777Ob 037b34L 4 MIL-S-43828A purchase order, the contractor may us
33、e his own or any other facilities 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 document where such inspections are necessary to assure supplies
34、and services conform to prescribed requirements. - 4.1.1 Certificate of compliance. Where certificates of compliance are submitted, the Government reserves the right to check test such items to determine the validity of the certification. 4.2 Classification of inspection. The inspection requirements
35、 specified herein are classified as follows: a. First article inspection (see 4.3). b. 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 4.4.2.1 and 4.4.2.2. any defect shall be cause
36、for rejection of the first article. The presence of 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 inspected
37、in accordance with.al1 the requirements of referenced documents, unless otherwise excluded, amended, modified, or qualified in this document or aonlicable purchase document. 4.4.1. Certification. The supplier shall furnish a certificate of compliance for the finish specified in 3.3.3.1 for the steel
38、 fastener and in 3.3.4.1 for the steel hook. 4.4.2 End item examination. The end item shall be examined in accordance with 4.4.2.1 and 4.4.2.2. The lot size shall be expressed in units of one strap. The sample unit shall be one strap. 4.4.2.1 Visual examination. The end item shall be examined for th
39、e defects listed below. The inspection level shall be II and the acceptable quality level (AQL), expressed in terms of defects per hundred units, shall be 1.5 for major defects and 4.0 Eor total (major and minor combined) defects, 5 . c Provided by IHSNot for ResaleNo reproduction or networking perm
40、itted without license from IHS-,-,-MIL-S-43828A 4 W 777770b 037b342 b M MIL-S-43828A _I Classification Examine . : Defect Major Minor .Webbing Not firmly and tightly woven; edges Multiple floats Any cut, hole, tear, or smash Ends not fused as specified (where required) frayed or scalloped . . Abrasi
41、on mark, slub, broken end or pick Metal hardware . Broken .or malformed failing to serve (general) intended purpose, corroded area, burr, or sharp edge not as specified: on steel components otherwise classified herein) Finish omitted, partially omitted, or Not assembled as specified (unless Not spec
42、ified type, size or style St itching Missing, not specified pattern Stitch type Stitch tension Loose, resulting in a loose bobbin or Wrong seam or stitch type top thread Thread breaks, Not overstitched as specified skipped stitches, NOTE: Thread breaks or two or more or runoffs consecutive skipped o
43、r runoff stitches not overstitched Not secured as specified Not trimmed to 1/4 inch maximum length Any component part omitted or not as specified or any required operation omitted (unless otherwise classified herein) Ends of -stitching Thread ends Components and assembly Needle chews Any mend, darn,
44、 patch or splice X X X X X X X X X X X 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-b -5 MIL-S-113828A 84 7997706 03763113 8 = - Classification . Defect Major Minor Examine Marking Omitted, illegible, incorrect, misplaced, or not as specified le
45、anness Grease, ink, or oil stains clearly noticeab le X X 4.4.2.2 Dimensional examination. Examination shall be made for compliance with u11 dimensions shown on the drawing which can be examined on the end item, excluding reference dimensions. constitute a defect. terms of defects per hundred uni-ts
46、, shall be 6.5; - Any dimension exceeding the applicable tolerance shall The inspection level shall be 5-3 -and the AQL, expressed in . 4.4.3 Packaging inspection. An examination shall be made to determine that The preservation, packins, and marking requirements comply with the section 5 requirement
47、s. Defects shall be scored in accoraance with the list below. sample unit shall be one shipping container fully packaged with the exception that it need not be closed. shipping containers fully packaged. in the inspection lot. terms of defects per hundred units, Examination of closure defects listed
48、 below shall be made on The inspection level shall be S-2 and the AQL, expressed in- The lot size shall be the number of containers shall be 2.5. Defect Marking (exterior and Omitted; incorrect; illegible; of improper size, location, sequence, or method of applica incorrect; illegible; of improper s
49、ize, location, sequence, or method of application. 5; PACKAGING 5.1 Preservacion. Preservation shall be level A or Commercial as specified (see 6.2). 5.1.1. Level A. Each strap shall be compactly folded or rolled and securely tied with cotton tape or twine. 5.1.2 Commercial. Straps shall be preserved in accordance with mL-STD-1188. 5.2 Packing. Packing shall be level A, B, or Commercial as specified (see 6.2). 5.2.1 Level A
