1、MIL-DTL-83776B (USAF) 19 March 2001 SUPERSEDING MIL-H-83776A(USAF) 28 June 1985 DETAIL SPECIFICATION HELMET, FLYERS, WINTER This specification is approved for use by the Department of the Air Force, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 S
2、cope. This specification covers type B-9B flyers helmet1.2 Classification. The helmet will be furnished in the following sizes (see 6.2). Size Equivalent Size Small 23 + 1/2 inch Medium 24 + 1/2 inch Large 25 + 1/2 inch Extra large 26 + 1/2 inch 1.2.1 The size measurements of the finished helmets wi
3、ll be in strict accordance with the measurements specified above and in the tabulation block of AF Drawing 51D24313. Measurements will be taken with the ear flaps up on the crown. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this
4、 document should be addressed to: Defense Supply Center Philadelphia, Clothing and Textiles Directorate, ATTN: DSCP-CRFD, 700 Robbins Avenue, Bldg 6D, Philadelphia, PA 19111-5094 by using the Standardization Document Improvement Proposal appearing at the end of this document or by letter AMSC N/A FS
5、C 8415 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83776B(USAF) 22. APPLICABLE DOCUMENTS SPECIFICATIONS FEDERAL A-A-50294 Thread, Cotton V-T-295 Thread, Nyl
6、on MIL-DTL-32075 Label, For Clothing, Equipage and Tentage, (General Use) MILITARY MIL-W-530 Webbing, Textile, Cotton, General Purpose, Natural or in Colors MIL-C-4294 Cloth, Nylon, Twill MIL-C-6590 Cloth, Pile (Synthetic Mouton, Knitted) A-A-52074 Cloth, Satin, Acetate or Rayon Face and Rayon or Co
7、tton Back DRAWINGS AIR FORCE 51D24313 Helmet, Aircrew, Sage Green, Nylon, Winter, Type B-9B (Copies of specifications, standards, drawings, and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the co
8、ntracting officer.) 2.1 Government 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 specification to the extent specified herein. (Activities outside the Federal Government may obtain c
9、opies of Federal specifications, standards, and commercial item descriptions as outlined under General Information in the Index of Federal Specifications, Standards and Commercial Item Descriptions. The Index, which includes cumulative bimonthly supplements as issued, is for sale on a subscription b
10、asis by the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402-0001.) (Single copies of this specification, other Federal specifications, and commercial item descriptions required by Services Administration Business Service Centers in Boston, MA; New York, NY; Philade
11、lphia, PA; Washington, DC; Atlanta, GA; Chicago, IL; Kansas City, MO; Fort Worth, TX; Denver, CO; San Francisco, CA; Los Angeles, CA; and Seattle, WA.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83776B(USAF) 3(Federal Government activiti
12、es may obtain copies of Federal standardization documents and the Index of Federal Specifications, Standards, and Commercial Item Descriptions from established distribution points in their agencies.) (Copies of military specifications and standards required by contractors in connection with specific
13、 procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) Federal Regulations: Rules And Regulations Under The Wool Products Labeling Act of 1939 (The Code of Federal Regulations (CFR) and the Federal Register (FR) are for sale on a subscriptio
14、n basis by the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402-0001. When indicated, reprints of certain regulations may be obtained from the Federal agency responsible for issuance thereof.) 2.2 Other publications. The following documents form a part of this docum
15、ent to the extent specified herein. Unless specific issue is identified, the issue in effect on date of invitation for bid or request for proposal will apply. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM D 6193 Stitches, Seams and stitching (Application for copies should be addressed to th
16、e American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) 3. REQUIREMENTS 3.1 First article. The requirements for the first article will be as specified by the procuring activity (see 6.2). The first article shall be examined for compliance with visual a
17、nd dimensional requirements of this specification. 3.2 Materials. 3.2.1 Recycled, recovered, or environmentally preferable material. Recycled, recovered, or environmentally preferable materials are used to the maximum extent possible provided that the material meets or exceeds the operational and ma
18、intenance requirements, and promotes economically advantageous life cycle costs. 3.2.2 Outershell. The fabric for the outershell will be cloth, nylon twill conforming toType I, Class A, of MIL-C-4294. The color will be USAF, Sage Green No. 1511. Provided by IHSNot for ResaleNo reproduction or networ
19、king permitted without license from IHS-,-,-MIL-DTL-83776B(USAF) 43.2.3 Innershell. The fabric for the innershell (lining) will be cloth, satin acetate or rayon face and rayon or cotton back (Type I or II) per A-A-52074. The color will be USAF Sage Green No. 1529 or the color will approximate that o
20、f the outershell. 3.2.4 Mouton. The color will be USAF, Sage Green No. 1523. The synthetic fur moutonMIL-C-6590, Type I, except that the ground fabric may be constructed of either cotton or polyester yarn and the backing compound may be Butadiene Styrene. As an alternate, the color color of the natu
21、ral mouton may approximate the color of the synthetic mouton. 3.2.5 Webbing. The webbing for the chin strap will be cotton, 3/4 inch wide, conforming to MIL-W-530, Type IIa, Class 3. The color will match the outershell fabric. 3.2.6 Fasteners, snap. The snap fastener used for chin strap closure will
22、 consist of a button, socket, stud, and eyelet as referenced on AF Drawing 51D24313. 3.2.7 Reinforcements. Reinforcements for the snaps will be 1-1/2 X 1-1/2 inch wide webbing, conforming to MIL-W-530, Type IIa, Class I, or scrap pieces from the innerlining. 3 2.8 Threads. 3.2.8.1 Thread, cotton. Th
23、e cotton thread used for hand stitching will conform to A-A-50294 3 ply. The color will approximate USAF Sage Green No. 1529 or the color of the outershell material (Sage Green no. 1511). 3.2.8.2 Thread, nylon. The nylon thread will conform to V-T-295, Type I or II, Class 1, size B. The color will b
24、e USAF, Sage Green No. 1511. 3.2.8.3 The dyed threads will show fastness to laundering and light equal to or better than the standard sample. When no standard sample is available, the dyed thread will show “good“ fastness to laundering and light. 3.2.9 Label. The helmet will contain a combination id
25、entification-size label conforming to the requirements of MIL-DTL-32075, Type VI, class 4 for dry cleaned items. The label will include the information required by the Wool Labeling Act of 1939. The label will be imprinted DRY CLEAN ONLY. 3.2.9.1 Label/tag. Each item will be individually bar coded w
26、ith a paper tag for personal clothing items. The paper tag will be standard bleached sulfate having a basis weight of 100 pounds. The paper used for the tags will have a smooth finish to accept thermal transfer and direct printing. The tags will have a hole and shall be attached to each item by a fa
27、stener, clearly legible and readable by scanner. The bar coding element will be a 13 digit national stock number (NSN). There will be a 12 digit unit price control number (UPC) assigned for NSNs by the procuring agency. The initial letters UPC must Provided by IHSNot for ResaleNo reproduction or net
28、working permitted without license from IHS-,-,-MIL-DTL-83776B(USAF) 5appear beneath the code. The bar code NSN and UPC type will be a medium to high code density and will be located so that it is completely visible on the item when it is folded an/or packaged as specified and so that it causes no da
29、mage to the item. 3.3 Patterns. Standard patterns, which provide 1/4 inch seam allowance will be furnished by the Government and will not be altered in any way. They will be used only as a guide for cutting the suppliers working patterns which will be identical to the standard patterns. 3.3.1 List o
30、f pattern parts. The pattern components for the helmet will be cut from materials as specified and according to the number of parts listed in Table I. TABLE I. List of Pattern Parts. Material Pattern Nomenclature Cut Parts Mouton Mouton Mouton Cloth Nylon Cloth Nylon Cloth Nylon Cloth Nylon Cloth Sa
31、tin, Acetate or Rayon Cloth Satin, Acetate or Rayon Cloth Satin, Acetate or Rayon Cotton Webbing Neck and ear panel Chin strap guard Front panel Rear panel outershell Side panel outershell, face up Side panel outershell, back up Front panel outershell Rear panel innershell Side panel innershell, fac
32、e up Front panel innershell Chin strap (see 51D24313) 1 1 1 1 1 1 1 1 1 1 1 3.3.2 Marking. The components of the helmet will be marked to insure a uniform shade and size throughout the garment. Any method of marking may be used except: a. Corrosive metal fastening devices b. Sew-on type tickets c. A
33、dhesive type tickets which discolor or adhere to the material upon removal of the tickets. 3.3.3 All parts will be marked, ticketed or bundled to insure uniform shade throughout the helmet. When the bundle system is used, plies from each bolt of fabric will be separated (in the spreading) by tissue
34、paper or other identifying medla and the parts, after cutting will be so segregated that each bundle will contain only parts cut from the same piece of material. The bundles must be identified so that all the components for each end item will be from the same piece of material. 3.4 Design. The helme
35、t is a fully lined cold weather head covering, having a four-piece crown, mouton forehead, earflaps with a webbing chin strap that closes with snap fasteners (see Figure 1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83776B(USAF) 63.4.1
36、Figure. Figure 1 is furnished for information purposes only. To the extent of any inconsistencies between the written specification and Figure 1, the written specification will govern. 3.5 Stitches, seams and stitching. All stitches, seam and stitching types specified in Table II will conform to AST
37、M-D6193. When two or more methods of seams or stitches are given for the same operation, anyone may be used. 3.5.1 Stitches per inch. The minimum and maximum number of stitches per inch will be as specified in Table II. Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
38、ense from IHS-,-,-MIL-DTL-83776B(USAF) 7Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83776B(USAF) 83.5.2 Thread breaks and ends of seams. Ends of all seams and stitching will be back tacked not less than 1/4 inch. Ends of continuous line o
39、f stitching will overlap not less than 1/2 inch. Thread breaks will be secured by stitching back of the break not less than 1/2 inch, unless otherwise specified. TABLE II. Construction of the Helmet. No Description of Operation Stitch Type Seams and Stitching Type Stitch per Inch 1 2 3. . Cutting a.
40、 Cut all parts in strict accordance with patterns furnished which show size for proper a of all parts. b. Cut the nylon outershell out of the same piece of material. c. Cut the satin, acetate or rayon all out of the same piece of material. Replacement of damaged parts. Replace at time of cutting any
41、 part containing damages such as holes, smashes, slubs or multiple floats. b. Replace any part damaged, during the manufacturing process, by a needle chew, cut, tear, hole, mend or burn. Prepare helmet a. The helmet will consist of a four- panel innershell and a four-panel outershell with a mouton f
42、ront panel. A webbing adjustment (chin strap) with mouton chin strap guard fastened to the outside side panels with four snap fasteners. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83776B(USAF) 9TABLE II. Construction of the Helmet.(cont)
43、 No Description of Operation Stitch Type Seams and Stitching Type Stitch per Inch 4 5 6. 7. 8. 9. Join seams of innershell a. Join quadrants of the innershell as shown in section A-A of 51D24313 and leave one rear seam of the innershell open 4 inches. b. Abut the edges of the dart found on the neck
44、and ear mouton panel and stitch together with a blind stitch. Stitch the top portion of the mouton panel to the innershell as shown in Section B-B of 51D24313; i.e., stitch mouton to midsection of the quadrants and turn mouton back so that edges of mouton follow the bottom edges of the innershell. S
45、titch around the edge. Label. Sew instructions, size and 1dentificaition label (on all four sides not more than 3/16 inch from edges) to center of innershell 1/2 +1/16 inch above the back seam of the mouton. Abut the edges of the darts found in the front mouton panel and blindstitch together Stitch
46、mouton front panel to front panel of outer shell. Join seams of outershell (see 51D24313 sections A-A and C-C). Install the four studs, eyelets and reinforcement to outer shell and reinforcement webbing (ref 51D24313). Join the inner and outer head pieces a. The lining will be caught to the outershe
47、ll by using machine made bartacks 5/16 inch long 301 304 or 301 or 501 301 301 or 401 or 501 301 or 401 Bartack SSa-1 SSa-1 LSbj-1 SSa-1 8-12 8-12 8-12 8-12 8-12 21 per Bartack Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-83776B(USAF) 10TA
48、BLE II. Construction of the Helmet.(cont) No Description of Operation Stitch Type Seams and Stitching Type Stitch per Inch 9. 10. 11 . 12. Join the inner and outer head pieces (cont) at the following three places: Center top where the quarter seams meet and on each back quarter seam l/4 + l/8 inch a
49、bove the mouton. The center top may be tacked by machine. b. Place the outer and innershells face to face and sew together around entire edge seam and close by hand stitching. c. Turn helmet through the 4 inch open seam and close by hand stitching. Chin strap The chin strap will be fabricated by using one piece of webing with raw edges of webbing abutting each other at the center of the strap
