1、r -37-70 MIL-H-3697D 29 April 1985 SUPERSEDING MIL-H-3697C 15 July 1968 MILITARY SPECIFICATION HARNESS, MANS, SLED, SINGLE TRACE TYPE This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope, This document covers one type of single trace
2、, man harness, fab- ricated of natural color cotton webbing, The harness is supported on the man by means of an adjustable strap which passes over the shoulders and around the neck. It is provided with a quick-release fastener on the waistband and a single trace of polyester rope 9 feet long with a
3、swivel eye snap hook on each end. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 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. SPECIFICATIONS FEDERAL V-T-285 - Thread, Polyester D
4、DD-L-20 - Label: For Clothing, Equipage and Tentage (General Use) Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: U.S. Army Natick Research and Development Center, Natick, - MA 01760-5014 by usi
5、ng the self-addressed Standardization Document Improve- ment Proposal, (DD Form 1426) appearing at the end of this document or by letter. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-3697D PPP-B-636 - Boxes, Shipping, Fiberboard PPP-B-1055 -
6、 Barrier Material, Waterproofed, Flexible PPP-T-76 - Tape, Pressure-Sensitive Adhesive Paper, (For Carton Sealing) MILITARY MIL-C-496 - Clips, End, Strap MIL-W-530 - Webbing, Textile, Cotton, General Purpose, MIL-B-543 - Buckles, Tongueless and Web Strap MIL-R-3390 - Rings, Dee MIL-F-11698 - Fastene
7、r and Link, Quick Release, Aluminum MIL-R-30500 - *Rope, Polyester MIL-S-43770/8- Snap Hooks, Cast Body, Round Eye Swivel Natural or in Colors 1-3/4 Inch S TANDARDS FEDERAL FED-STD-751 - Stitches, Seams, and Stitchings MI L I TARY MIL-STD-105 - Sampling Procedures and Tables for Inspection MIL-STD-1
8、29 - Marking for Shipment and Storage MIL-STD-147 - Palletized Unit Loads by Attributes DRAWING U.S. ARMY NATICK RESEARCH AND DEVELOPMENT CENTER 2- 10-35 - Harness Mans, Sled, Single Trace Type (Copies of documents required by the manufacturer in connection with specific acquisition functions should
9、 be obtained from the contracting 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 here
10、in. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-T R MIL-H-3697D AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 3951 - Standard Practice for Commercial Packaging (Application for copies should be addressed to the American Society for Testin
11、g and Materials, 1916 Race Street, Philadelphia, PA 19103.) (Technical society and technical association documents are,available for reference from libraries. They are also distributed among using technical groups and Federal agencies.) 2.3 Order of precedence. In the event of a conflict between the
12、 text of this document and the references cited herein, the text of this docment shall take precedence. 3. -REQUIREMENTS 3.1 First article. When specified, a sample shall be subjected to first article inspection (see 4.3, 6.2 and 6.3). 3.2 Materials (see 6.4). 3.2.1 Webbing, cotton. The webbing shal
13、l be natural (unbleached), water repellent and mildew-resistant treated, Conforming to type IIb, class la, 1 inch width and type II, class la, 3-3/4 inches in width of MIL-W-530, 3.2.2 Thread, polyester. The thread for all stitching shall be type I or II, class 1, subclass A, size FF, natural of V-T
14、-285. 3.2.3 Rope. The rope shall be natural (undyed) polyester, 3/4 inch circum- ference conforming to MIL-R-30500, 3.2.4 Buckle, tongueless, 1-bar. The buckle shall conform to type I, style 2, class 1, size 1 inch, construction A of MIL-B-543. 3.2.5 Clips, end, strap. The end clips shall conform to
15、 type I, class 1, size 1 of MIL-C-496. 3.2.6 Fastener and link, quick release, aluminum, 1-3/4 inch. The fastener and link shall conform to MIL-F-11698. As an alternate the body and latch assembly shall conform to United States Forgecraft Corporation part No. 44 B 26452 (body, latch) and part No. 44
16、 B 26454 (link), or equal (see 6.5). Prior to use of the “or equal“ item, the contractor shall submit to the contracting- . officer with supporting data for approval. _. 3.2.7 Rings, dee. The 3-3/4 inch by 1-3/8 inch andthe 2-3/4 inch by 1-1/8 inch dee rings shall conform to configuration D class 2
17、of MIL-R-3390 except that the wire shall be ,2253 inch nomial diameter in lieu of .1920 inch. 3.2.8 Snaphooks. The snaphooks shall be 3/4 inch round eye swivel conform- 3 ing to part number M43770/8-MlZl of MIL-S-43770/8. Provided by IHSNot for ResaleNo reproduction or networking permitted without l
18、icense from IHS-,-,-MIL-H-3697D 3.2 Construction, The construction shall conform in all respects to Drawing 2-10-35 and as specified herein. 3,2.1 Stitching. All stitching shall conform to type 301 of FED-STD-751, 6 to 8 stitches per inch. 3.2.1.1 Type 301 stitching. Ends of all stitching, except W-
19、W, shall be backstitched or overstitched 1 inch minimum except where ends are turned under in a hem or held down by other stitching. On W-W- stitching, all ends shall be backstitched or overstitched 1/2 inch minimum. Thread tension shall be main- tained so that there will be no loose stitching resul
20、ting in loose bobbin or top thread, or excessively tight stitching resulting in puckering of the materials sewn. The lock shall be embedded in the materials sewn. 3.2,1,1.1 Repairs of type 301 stitching, Repairs of type 301 stitching shall be as follows: a. When thread breaks or bobbin run-outs occu
21、r during stitching, the stitching shall be repaired by restarting the stitching a minimum of 1 inch (1/2 inch box and W-W-stitching) back of the end of the stitching. - 1/ b, Thread breaks or two or more consecutive skipped or run-off stitches noted during inspection of the item (in-process or end i
22、tem) shall be repaired by overstitching. The stitching shall start a minimum of 1 inch in back of the defective area (1/2 inch for box and W-W stitching), continue over the defective area and continue a minimum of 1 inch (1/2 inch for box and W-W stitching) beyond the defective area onto the existin
23、g stitching. Loose or excessively tight stitching shall be repaired by removing the defective stitching, without damaging the materials, and restitching in the required manner. L/ - 1/ When making the above repairs the ends of the stitching are not required to be backstitched, 3.3.2 Splicing, A snap
24、 hook shall be spliced to each end of the harness trace as shown on Drawing 2-10-35, using a 3-tuck eye splice. The ends of all strands shall be clipped and seared. The seared strand ends shall be not less than 3/8 inch nor more than 5/ inch in length. 3.3.3 Setting of end clips. The webbing shall b
25、e inserted the full depth of the clips, The clips shall be attached without cutting the webbing. 3.4 Marking. The identification marking shall conform to type IV, class 5 of DDD-L-20. In addition, the letters “US“ and “FRONT“ shall be applied in the size characters shown in the drawing and shall con
26、form to type IV, class 9 of DDD-L-20. Fastness shall be as specified for class 5 labels. Location for all markings shall be as indicated on the drawing. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-3697D 3.5 Workmanship. The finished harne
27、ss shall conform to the quality and grade of product established by this document. Occurrence of defects shall not exceed the applicable acceptable quality level. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the con- tract or purchase order, the co
28、ntractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless
29、 disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the document where such inspec- tions are deemed necessary to assure supplies and services conform to prescribed requirements. 4.2 Classification of inspection. The inspection requirement
30、s 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, 4,4.3 and 4.4.4. The presence of any de
31、fect shall be cause for rejection of the first article. 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 inspec
32、ted in accordance with all the requirements of referenced documents unless otherwise excluded, amended, modified, or qualified in this document or applicable purchase document. 4.4.2 End item visual examination. The end item shall be examined for the defects listed in table I. The lot size shall be
33、expressed in units of harnesses. The sample unit shall be one harness. The inspection level shall be II and the acceptable quality level (AQL), expressed in terms of defects per hundred units, shall be 2.5 for major defects, 6.5 for major and minor combined defeets, and 15.0 for total (major, minor
34、A and minor B combined) defects. 5 ! k Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-3697D TABLE I. End item visual defects Classif cation Major Minor Examine Defect AB Webbing Any hole , cut, or tear X or tightly woven X - up to 1/8 inch in
35、length X - more than 1/8 inch in length X Slub, broken end or pick x Frayed or scalloped edges, not firmly Needle chews: Hardware Bfoken or malformed failing to (general) serve intended purpose, corroded Finish omitted, partially omitted area, burr, or sharp edge or not as specified - On brass or al
36、uminum components - On steel components X Not assembled as specified (unless otherwise classified herein) X Not specified type, size, or style X Open seams 1/2 inch or less X More than 1/2 inch X NOTE: A seam shall be classified open when one or more stitches joining a seam are broken or when two or
37、 more con- tinuous skipped or runoff stitches occur. Runoffs (see open seams) Seam and stitch type Wrong seam or stitch type Stitch type Wrong stitch type. X X X X 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-3697D TABLE I. End item visual
38、 defects (cantd) Classification Major Minor Examine Defect AB Stitches per inch One stitch less than minimum specified Two or more stitches less than One or more stitches in excess of minimum specified maximum specified a c X X X Stitching margin Stitching ends NOTE: Variation in the number of stitc
39、hes per inch caused by the operator speeding up the machine and pulling . the fabric in order to sew over heavy seams or heavy places, or in turning heavy corners shall be classified as follows: (a) Within a minor A defect (b) Within the minor B defect classification - Minor B defect classification
40、- No defect Thread breaks Not as specified Not backstitched as specified, except where ends are turned under in a hem or held down by other stitching Less than three tying, overlapping, or backstitching in cross box stitching or W-W stitching (when performed on automatic machine) On stitching other
41、than W-W stitching, overstitched less than 1 inch in each direction beyond defective stitching area On W-W stitching, overstitched less than 1/2 inch in each direction beyond the defective stitching area NOTE: Thread breaks not backstitched shall be classified as open seams 7 X X X X X Provided by I
42、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-3697D TABLE I. End item visual defects (contd) Classification Major Minor Examine Defect AB Components and Any required component or part of assembly harness omitted X Any required row of stitching omitted, ex
43、cept on W-W or box stitching X W-W or box stitching incomplete: - one row of stitching omitted X - two or more rows of stitching omitted X k“W or box stitching less than speci- fied length by more than 1/8 inch Turned under portion of folded ends, keeper and adjusting straps not caught in all requir
44、ed stitching Harness assembly Webbing not continuous, i.e., spliced Ends of harness Folded ends finished on outside Keeper, reinforcement Misplaced, i.e., set on outside of waistband instead of inside Adjusting straps A Attached end of either strap uneven and B with lower edge of body by 1/8 inch or
45、 more Straps misplaced, i.e., strap B (with clip on free end) attached to outer end of body waistband instead of outside failing to hold adjusting strap B assembly X End clip on adjusting strap B im- properly clinched, i.e., webbing not flat at point of insertion into clip Marking Omitted, illegible
46、, incorrect, mis- placed, or size of characters not as specified. One or both straps set to inside of Buckle on adjusting strap A reversed, X X X X X X X X X X 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Snap hooks Cleanness I MIL-H-3697D TABLE
47、 I. End item visual defects (contd) Classification Major Minor Exam i ne Defect AB Spring portion of snap hook loose or defective causing spring to jam or to remain in an open position Grease or oil stains clearly notice- able; thread ends not trimmed throughout X X 4.4.3 End item dimensional examin
48、ation. The end item shall be examined for defects listed in table II. The lot size shall be expressed in units of harnesses. The sample unit shall be one harness. The inspection level shall be S-2 and the AQL, expressed in terms of defects per hundred units, shall be 6.5. TABLE II. End item dimensio
49、nal defects Examine Defect Dimensions, overall Smaller than nominal dimension, less applicable minus tolerance indicated on drawing tolerance Larger than nominal dimension and applicable plus All dimensions other Not within the specified tolerances than overall 4.4.4 End item functional examination. The end item shall be examined for functional defects listed in table III. The lot size shall be expressed in units of ha
