1、MIL-B-SLL7bF 84 m 777970b 0447Libb b MIL-B-5 1 176F 3 October 1988 SUPE RSED ING MIL-B-51176E(GL) 27 September 1984 MILITARY SPECIFICATION BOOTS, TOXICOLOGICAL AGENTS PROTECTIVE, M2A1 This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Sc
2、ope. This document covers butyl rubber boots, with steel safety toes, designed for wear over stockings. 1.2 Classification. The boots shall be of the following types and sizes as specified (see 6.2). Type 1 Type II 2. APPLICAB - Knee length - Short length (with leg closure ring) Schedule of sizes 5
3、6 7 8 9 10 11 12 13 14 15 E DOCUMENTS 2.1 Government documents. * 2.1.1 Specifications, standards, and handbooks. The followins specifi- cations, standards, and handbooks form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents shall
4、 be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be add
5、ressed to: Engineering Center, Natick, MA 01760-5014 by using the self-addressel Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. U.S. Army Natick Research and Development and 1.- AMSC N/A FSC 8430 DISTRIBUTION STATEMENT A. Approved for
6、,public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SPECIFICATIONS FEDERAL A-A-o - QQ-A-250/ 1 1 - PPP-B-636 - MILITARY MIL-A-8625 - MIL-E-20652/1- MIL-L-35078 - STANDARDS FEDERAL FED-STD-191 - FED-STD-595 - MI
7、LITAaY MIL-STD- 1 O5 - MIL-STD-129 - MIL-ST3- 147 - MIL-ST3-282 - MIL-ST3-731 - MIL-B-51176F Paper, Kraft, Untreated Aluminum Alloy 6061, Plate and Sheet Boxes, Shipping, Fiberboard Anodic Coatings, For Aluminum and Aluniinum Alloys Eyelets, Metallic, Rolled Flange Type; and Loads, Unit: Preparation
8、 of Semiperishable Eyelet Washer Subsistence Items; Clothing, Personal Equipaent and Equipage; General Specification For Textile Test Methods Colors Sampling Procedures and Tables for Inspection by Marking for Shipment and Storage Palletized Unit Loads Filter Units, Protective Clothing, Gas-Mask Att
9、ributes Components and Related Products, Perfarmanee Test Me thods Quality of Wood Members for Containers and Pallets (Copies of specifications, standards, and handbooks required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as d
10、irected by the contracting activity.) 2.1.2 Other Government documents, drawings, and publications. The following other Government docments, drawings, and publications form a part of this specification to the extent specified herein. Unless otherwise specified, the issues shall be those in effect 3n
11、 the date of the solicitation, 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i -* MIL-B-51176F DRAWING U.S. ARMY NATICK RESEARCH, DEVELOPMENT, AND ENGINEERING CENTER 8-1 -182 - Leg and Boot Closure Ring . (Copies of drawings, publications, and ot
12、her Government documents required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity. 1 * 2.2 Other publications. The following documents form a part of this specification to the extent specifie
13、d herein., Unless otherwise specified, the issues of the documents which are DOD adopted shall be those listed in the issue of the DODISS specified in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS shall be the issues of the nqngovernment documents whi
14、ch are current on the date of the solicitation. AMERICAN SOCIETY FOT! TESTING AND MATERIALS (ASTM) D 412 - Rubber Properties in Tension D 1630 - Rubber Property - Abrasion Resistance (NBS Abrader) D 3951 - Standard Practice for Commercial Packaging (Application for copies should be addressed to the
15、American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103-1187.) (Nongovernment standards and other publications are normally available from the organizations which prepare or which distribute the documents. These documents also may be available in or through libraries or
16、other informtional services. 1 2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein, the text of this specification shall take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unl
17、ess a specific exemption has been obtained. 3. RECIUIREMENTS , * 3.1 First article. When specified in the contract or purchase order, a sample shall be subjected to first article inspection !see 4.3, 6.2, and 6.3). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
18、e from IHS-,-,-MIL-B-SLL7bF 4 7797906 O447467 1 MIL-B-51176F 3.2 Material (see 6.5). 3.2.1 Rubber. The compounds to be used in assetL,ly of the boot (except the cement and the stiffening counter) shall be made from butyl rubber and shall not contain natural, synthetic (other than butyl rubber), or r
19、eclaimed rubber. Reclaimed butyl rubber in amounts not to exceed 5 percent of the total batch weight may be used in compounding the outsole. Use of rag stock in natural rubber or synthetic rubber compound is allowed in the stiffening counter as referenced in table III. The rubber compounds shall mee
20、t the requirements in table I when test as specified in 4.4.1. TABLE I. Requirements for rubber conpounds Outsole and heel Characteristics Upper compound compound Tensile strength, minimum: Initiai (psi) 1 O00 - After accelerated aging, 75 percent of initial strength Ultimate elongation, percent, mi
21、nimum 400 Abrasive index, minimum - 50 3.2.2 Cotton fabrics. The cotton fabrics to be coated shall have a pH of not less than 5.5. 3.2.3 Eyelet (for type I). The eyelet shall confora to dash No. ABE 129 of MIS-E-20652/1. inside diameter of 1/4 inch may be used. As an alternate, an uncoated Junior ey
22、elet and washer with an 3.2.4 Adhesives. Only neoprene or butyl rubber adhesive is authorized for seams in forming the boot on the last and to supplement natural tack of unsupported compound components laid one over the other. The adhesive shall be compounded to have an optimum cure duplicating that
23、 of the butyl rubber cornpoufid. tested as specified in 4.4.1. The adhesion of these compounds shall be no less than 6 pounds when 3.2.5 Steel box toe. The steel box toe shall confora to the toe of the last and shall Se fabricated from cold-rolled carbon steel. After heat treatment, the steel box to
24、e shallconform to the requirements of table II. The steel box toe shall be thoroughly cleaned and be given a zinc compound coating, parkerizing, or equivalent. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i i- MIL-B-SLL7bF 4 - 7779706 0447470 B
25、- MIL-B-51176F TABLE II. Physical requirements, steel box toe Hardness Carbon Thickness Trade (Rockwell C content, percent inch pat tern 42-52 0.50 to 0.82 0.050 to O. 058 93 1 or equal 3.2.6 Leg closure ring (for type II). The leg closure ring shall be made in accordance with Drawing 8-1-182. alumi
26、num alloy conforming to temper T6 of QQ-A-250/11 and anodized in accordance with type II, class 2 of MIL-A-8625. ring shall be incorporated in the boot. The closure ring shall be made of Only the male portion of the 3.3 Construction. 3.3.1 Lasts. Each manufacturer shall make lasts which shall have t
27、he following dimensions: 3.3.1.1 Ankle girth. The circumference of the ankle of the boot lasts for both type I and type II shall be not less than 11 inches for size 9 with a grading of 1/4 inch between sizes. 3.3.1.2 Top girth. 3.3.1.2.1 Type I. The circumfepence measurement of the outside top of th
28、e boot last shall be not less than 15-5/8 inches for size 9 with a grading of 1/4 inch between sizes. The measurement shall be made at a point measuring up 16 inches from center back of heel area. 3.3.1.2.2 Type II. The diameter of the top of the boot last shall be such that when the boot is removed
29、 from the last and the top is folded over, the inside diameter of the boot top measured through the center of the ring, shall be as shown on figure 1. 3.3.2 Upper compound components. The following components of the boots shall be ffiade from upper compound in the thickness specified! Comp0ner.t Ank
30、le piece Heel piece Leg cover Backstay Inner vamp Outer vamp Gum toe cap Foxing Overall thickness. inches ainimum O. 040 O .O40 0.040 1/ 0.040 0.040 0.040 0.030 - 0.100 - 2/ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-5137bF L( = 777770b 04
31、97473 T L 4 MIL-B-51176F Inside foxing (optional) First binder sole (Optional) Second binder sole (Optional) Welt Binding 0.030 1/ O .O30 0.030 0.160 - 4/ 0.040 - 5/ - 1/ The leg cover shall be made from at least three plies of upper compound. - 2/ May have feathered or skived edges. When inside fox
32、ing is used, the thickness of the foxing (outside) may be a minimum of 0.080. - 3/ Shall be upper compound, or 5.4 ounce minimum woven cloth as specified in table III. - 4/ Shall be not less than 5/16 inch in width and the ends shall taper to a feathered edge. If the outsole is designed to physicall
33、y incorporate welt dimensions within itself, a separate welt is not required. Type I shall be 7/16 - + 1/16 inch wide and type II shall be 15/16 - + 1/16 inch wide. - 5/ 3.3.3 Cloth base components. The construction of the components shall be as specified in table III. 6 Provided by IHSNot for Resal
34、eNo reproduction or networking permitted without license from IHS-,-,-i MIL-B-51176F MIL-B-5117bF BY W 777770b 0447472 1 W o O O I I C c, O rl o C O ci c, 8 c !I rl m c, c al i E O U L O m ci C Q, E d I o al 0: O =r O O I I In Ln O O I I I I I l m alo? Q am I SE except as specified for the outsole o
35、r counter in 3.2.1. The contractor shall furnish a certi- ficate of compliance stating that the leg cover is made of at least three plies of upper compound. Y b, The type and weight of each cotton cloth and where each was used (see table III). c. That all base cloths used have a pH not less than 5.5
36、. d. That the steel top cap conforms to the requirements in 3.2.5 and table II. e. That the leg closure ring meets the requirements of 3.2.6 (type II only). f. That the boot adhesive is either neoprene or a butyl base type and - has a curing time duplicating that of the butyl rubber. g. That the dim
37、ensions for lasts conform to the rnquirements of 3.3.11., 7.3.1.2.1, and 3.3.1.2.2. h. That the leg closure ring is bonded with butyl rubber and adhesive specified in 3.3.6 (type II only). i. That the thickness of the upper compound components conforms to the requirements of 3.3.2. j. That the thick
38、iless af the outsole and heel conforms to the requirements of figure 1. k. That a minimum of 1 inch of the rubber leg portion extends beyond the top OE the binding in accordance with 3.4.2 (type 11 only). * 4.4.2 In-process inspection. Inspection shall be made at any point or during any phase o the
39、manufacturing operation to determine whether construction details which cannot be examined in the finished product are in accordance with specified requirements. Whenever nonconformance is noted, corrections shall be made to the items affected and lot in-process. Items which cannot be corrected shal
40、l be removed from production. 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-SLL7bF 4 W 9999906 Oi.147479 4 W r MIL-B-51176F * 4.4.2.1 Critical defect examination of boots. Prior to performing the end item sampling examination required in 4
41、.4.3, the boots shall be 100 percent examined for the critical defects in table V. This 100 percent critical defect examination shall become a part of the contractors inspection system or quality program. Any boot found to contain a critical defect shall be rejected. * 4.4.3 End item visual examinat
42、ion. The boots shall be examined for the defects listed in table V. The lot size shall be expressed in units of boots. The sample unit shall be one boot. 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 d
43、efects and 6.5 for total (major and minor combined) defects, The finding of any critical defect shall be cause for rejection of the lot. TABLE V. End item visual defects Defect Critical Maior Minor Any cut, tear, or hole in upper material X Any cut, tear, or hole through soling material X Any repair
44、 or patch X injury to the user X Any component damaged or misplaced, or any operation omitted or not properly performed which may result in Poor or uneven lastingj seriously affecting service- Poor or uneven lasting, affecting serviceability or Any component missing. Air pocket or channel under 1/11
45、 square inch in area in any sean. Air pocket or channel 1/4 square inch 3r more in area in any seam. Marking (contractural, size, etc.) missing, incomplete, in- correct, not applied in the specified manner, misplaced, or illegible. ability or appearance. appearance but not seriously. Any pit over 1/
46、3 inch in any lateral dimension. Any pit penetrating through the outer layer of rubber and into the second layer of rubber. Pits more than 1/16 inch but not more than 1/8 inch in any lateral dimension not penetrating the outer layer of rubber and in sufficient number to average more than one pit per
47、 square inch over the entire upper area. Boots not properly mated, i.e., not right and left of same size More than 1/4 inch variation between right and left boot comprising a pair X x X X X 14 X X X X X X Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
48、-,- UIL-B-SLL76F 4 9999906 0447480 O MIL-B-51176F TABLE V. End item visual defects (contd) Defect Critical Major Minor Color of toe overlay not as specified. Finish of boot not as specified Type not as specified. X X X 4.4.4 End item dimensional examination. The boots shall be examined for the dimen
49、sions specified in paragraphs 3.4.1 and 3.4.2 for the inside height requirements specified. shall be classified as a defect, The lot size shall be expressed in units of one boot, pairs. The inspection level shall be S-3 and the AQL, expressed in terms of defects per hundred units, shall be 4.0. Any dimension not within the specified tolerance The sample unit shall be one boot and the selection shall be
