1、 INCH-POUNDA-A-59520November 30, 1999SUPERSEDINGMIL-O-43995CSeptember 15, 1989COMMERCIAL ITEM DESCRIPTIONOVERSHOES, MENS AND WOMENS, BOOT, COMBATThe General Services Administration has authorized the use of this commercial item description for allFederal agencies.1. SCOPE. This commercial item descr
2、iption covers the requirements for a slip resistance, fuelresistant, chemical protective, molded vinyl plastisol overshoe.2. CLASSIFICATION. The overshoe shall be available in the following sizes:Schedule of sizes3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 143. SALIENT CHARACTERISTICS3.1 Description. The o
3、vershoe shall be a vinyl plastisol, slush or injection molded, pull-on type with afolded gusset and three buttons on each side of the gusset. Closure shall be accomplished with threefastening loops. The design of the overshoe shall be as shown on Drawing 2-1-1371.3.2 Materials.3.2.1 Vinyl. The moldi
4、ng compound shall consist of virgin vinyl resins, plasticizers, stabilizers, andpigments which are suitable for either slush or injection molded overshoes. The requirements shall be asspecified in Table I.Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data w
5、hich mayimprove this document should be sent to: Defense Supply Center Philadelphia, Clothing and TextileDirectorate, Bldg 6D, ATTN: DSCP-CRFD, 700 Robbins Avenue, Philadelphia, PA 19111-5092.AMSC N/A FSC 8430Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
6、HS-,-,-A-A-595202TABLE I. Physical Requirements (End Item)Characteristic Requirements Test method_Tensile strength:100% elongation 250 psi (min.) 500 psi (max.) ASTM-D-638 1/At break 900 psi (min.) ASTM-D-638 1/ 2/100% elongation after immersionin Medium No. 6 125% (max.) see para. 3.3.4Elongation a
7、t break, percent 300 (min.) ASTM-D-638 1/Tear strength, lb./in. 110 (min.) ASTM-D-1004 1/ 3/Hardness (Shore A Durometer) 65 (max.) ASTM-D-2240Brittleness temperature -40oC or lower ASTM-D-746Leakage no evidence see para. 3.3.5Mustard (HB), break time in minutes 210 (min.) T204 or T209 4/ 5/GB resist
8、ance, break time in minutes 360 (min.) T206 or T208 4/ 5/1/ The speed of the machine shall be 12 inches per minute2/ No individual test value shall be less 750 psi.3/ No individual tear strength value shall be less than 95 lbs per inch of thickness.4/ Refers to test methods in MIL-STD-282, “Filter U
9、nits, Protective Clothing, Gas-MaskComponents and Related Products: Performance-Test Methods”.5/ Acceptance testing to be performed by the US Government.3.2.2 Button assembly. The button assembly shall consist of a 27 line, open top, brass button,Universal Style UB 807 or equal; and an 18 line, two
10、prong, capped fastener, Universal Style UB 878or equal (see para.7.3). The two components shall have a black chemical finish. The assembly of thecomponents shall be as shown on Drawing 2-1-1371. The button assembly, after being secured to theovershoe, shall withstand a minimum pull of 35 pounds with
11、out separation of the button from fastener orthe fastener pulling through the overshoe as specified in Table II.TABLE II. Component Requirements.Component Characteristic Test methodButton assembly (one Material identification see para.3.3.2Button and fastener) Dimension gage 1/Fastening loop (one fa
12、stener) Material identification VisualBreaking strength see para. 3.3.1Dimension gage 1/1/ Results shall be reported to the nearest 0.001 inch or 1/32 inch as applicable.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5952033.2.3 Fastening loop a
13、ssembly. The fastening loop assembly consists of a black nylon braid with anelastic core, a vinyl coated tricot weave fabric tab and a corrosion-resistant, black metal clip suitable forforming around the braid without fracturing. The fastening loop assembly construction and dimensionsshall be as sho
14、wn on Drawing 2-1-1371. The completed fastening loop assembly of 25 pounds for notless than 30 minutes without breaking when tested as specified in para. 3.3.1.3.2.3.1 Tab material. The tab material shall be a vinyl coated tricot weave fabric. The overallthickness of the finished tab is 30 mils cons
15、isting of 10 mils of vinyl and 4 mils of fabric per layer beforebonding. The tab material shall weigh 7.7 .5 ounces per square yard with the vinyl weighing aminimum of 6.5 ounces per square yard and the fabric weighing a minimum of one ounce per squareyard. The tear strength shall be 6.0 lb. in the
16、cross machine direction and 2.5 lb. in the machinedirection when tested in accordance to ASTM-D-1682. The minimum breaking strength shall be 68.0lb. in the machine direction and 38.0 lb. in the cross machine direction when tested in accordance withASTM-D-1424. To insure the maximum tear and breaking
17、 strength, the tabs should be cut parallel tothe machine direction.3.2.3.2 Tab stitch. The vinyl coating tricot fabric shall be bartacked at 1/8 inch with black nylonthread with twisted multiple cord, soft or bonded finish, Tex size 50. The minimum breaking strengthshall be 6.0 lb. and the maximum e
18、longation for the thread shall be 30 percent respectively when testedin accordance with ASTM-D-2256. Colorfastness shall be consistent with the end item. The stitchshall begin just below the black nylon braid in the middle of the tab to approximately 1/4 inch from theoutside perimeter of the tab.3.3
19、 End item testing. The overshoes shall be tested as specified in paragraphs 3.2.1 through 3.3.5.The sample unit shall be one overshoe for each test method and the lot size shall be expressed in units ofone overshoe. Requirements are applicable to the individual unit. The thickness shall be expressed
20、 asan average of three measurements taken as close as possible to the specific points indicated on thedrawing. The micrometer (B.C. Ames Micrometer Model Nos. 56122 or 56182) shall be firmlymounted on a table vice so that only the overboot is manipulated when taking the thicknessmeasurements.3.3.1 B
21、reaking strength of fastening loop. One loop of the fastening loop shall be placed over a fixedsuspension hook. A suitable clamp shall be attached through the center of the tab and weights appliedin increments not exceeding 10 pounds until a total load of 25 pounds has been applied. The weightsshall
22、 hang freely exerting a 25-pound load on the fastening loop for a period of 30 minutes. Any loopthat breaks during the 30-minute period shall be a test failure.3.3.2 Pull test. The vinyl specimen shall be 4 inches long and 1-1/2 inches wide and shall be cut fromthe overshoe so that the middle of the
23、 button is in the center of the specimen. The specimen shall bemounted in the button pull test fixture as shown on Drawing 2-1-1371 and the test conducted using atensile testing machine operating at a speed of 12 inches per minute. A test failure shall be reported ifeither the button and fastener se
24、parate or if the fastener pulls through the vinyl upper at a pull of 35pounds or less.3.3.3 Uniform molding and curing test. The sole from an overshoe from each sample unit shall be cutwith a sharp knife along the center line from the toe to the heel. Evidence of any blister, peeling,delamination, o
25、r separation of material shall be a test failure.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5952043.3.4 Tensile strength test at 100 percent elongation after immersion in Medium No. 6. The dumbbell-shaped specimen shall be as specified in AS
26、TM-D-638 except that the specimen shall be 4-3/8 incheslong. The specimen shall be immersed in fuel conforming to Medium No. 6 as specified in Method6001 of FED-STD-601. The temperature of the medium shall be 23o 2oC and the time of immersionshall be 16 hours. At the end of the required immersion ti
27、me, the specimen shall be removed from themedium, dried with a soft absorbent cloth and allowed to air dry for 4 hours. The specimen shall thenbe tested for tensile strength of 100 percent elongation in accordance with ASTM-D-638 except thatthe speed shall be 12 inches per minute. The thickness of t
28、he specimen shall be determined after thespecimen has been air dried for 4 hours.3.3.5 Leakage test. The specimen shall be an overshoe with all fastening loops in place so asto keep the gusset closed. The overshoe shall be filled with water at 23o 2oC to within 1/2 to 1/4inch of the middle button as
29、sembly. After 15 minutes, the outside of the water filled overshoe shall beexamined. Any evidence of leakage shall be a test failure.3.4 Molds. The molds used for slush or injection molding the overshoe shall be furnished bythe contractor and fabricated to conform to the design shown on Drawing 2-1-
30、1371.3.5 Construction.3.5.1 Molding. The overshoe shall be slush or injection molded in such a manner that the dimensions,including the thickness shall conform to Drawing 2-1-1371. The molding process shall be performed ina single feed/cure operation so that the vinyl plastisol formulation is unifor
31、mly cured throughout thethickness of the overshoe. Testing shall be in accordance with para. 3.3.3.3.5.2 Attachment of fastening loops. Three fastening loops, one per button, shall be attached to thethree buttons on the inward side of each overshoe by passing the smaller of the two formed loops over
32、the button.3.5.3 Extra fastening loop. One extra fastening loop shall be placed inside the right overshoe of eachpair of overshoes prior to packaging.3.5.4 Color and finish. The color of the overshoe shall be Black 375. The outer surface of theovershoe shall be sprayed with a lacquer so as to produc
33、e a uniform, lusterless appearance. The insideof the overshoe shall be coated with a slip finish to permit easy donning and doffing. The overshoe shallnot have any tacky or sticky areas.3.6 Marking and identification. The size and the contractors name shall be embossed in raisedlettering 1/4 to 1/2
34、inch in height on the outside of the overshoes.3.6.1 Instruction sheet. A paper instruction sheet shall be placed inside each unit package of overshoesso as to be readily visible. The size of the characters shall be 1/14 inch for the heading and 1/8 inch forinstructions. The instruction sheet shall
35、contain the following information:Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-595205OVERSHOES, MENS AND WOMENSBOOT, COMBAT1. THESE OVERSHOES MAY BE WORN IN THE EVENT CHEMICAL PROTECTION(CB PROTECTION) IS REQUIRED.2. ALWAYS WEAR THE OVERSHOES
36、UNDER YOUR OUTER TROUSERS FORCHEMICAL PROTECTION.2. PERIODICALLY, INSPECT YOUR CHEMICAL PROTECTIVE OVERSHOES FORHOLES OR PUNCTURES. IN THE EVENT THEY DO DEVELOP HOLES OR PUNCTURES,DISCARD IMMEDIATELY AND USE A SERVICEABLE PAIR.4. SHOULD YOUR OVERSHOES BECOME CONTAMINATED WITH GASOLINE, OILCONTAMINAT
37、EDWITHGASOLINE, OIL, GREASE, OR CLEANING FLUIDS, WIPE OFFAND AIR DRY WITHIN TWO MINUTES.DONNING INSTRUCTIONS1. SELECT AN OVERSHOE SIZE THAT WILL PERMIT EASE OFDONNING/DOFFING.2. INSERT BOOT INTO OVERSHOE. MAKE SURE THE FIT IS NEITHER TOOTIGHT NOR TOO LOOSE.3. CLOSE OVERSHOE WITH LOOP CLOSURES AND SE
38、E THAT OVERSHOECOMPLETELY COVERS THE FOOTWEAR AND FUNCTIONS DURING LOCOMOTION.3.6.2 Marking and identification (for Navy procurements only). Each overshoe shall have the followinginscription marked in indelible white ink on the outer leg portion of the overshoe, centered to the left ofthe bottom but
39、ton. The size of the lettering shall be 3/8 inch in height.FOR CHEMICAL WARFARE PROTECTION ONLY3.6.2.1 Identification. The size and contractors name shall be embossed in raised lettering 1/4 to 1/2inch in height in the shank area on the outside of the overshoe. The identification sheet shall be on w
40、hitepaper (4 inches by 5 inches) with the following information printed in black ink. The lettering size shallbe no less than 1/8 inch in height.NOMENCLATURESIZECONTRACT NO.NATIONAL STOCK NO.MANUFACTURERDATE MANUFACTUREDProvided by IHSNot for ResaleNo reproduction or networking permitted without lic
41、ense from IHS-,-,-A-A-5952063.6.2.2 Wearing instructions. Each pair of overshoes shall contain an 8-1/2 by 11 inch sheet of whitepaper with the following instructions printed in black ink. The lettering size shall be no less than 1/8 inchin height.OVERSHOES, CHEMICAL PROTECTIVE, SIZES 3 TO 14WEARING
42、 INSTRUCTIONS1. THE OVESHOES MAY BE WORN IN THE EVENT CHEMICAL PROTECTION(CB PROTECTION) IS REQUIRED. THE SIZE RANGE IS 3 TO 14 SELECT AN OVERSHOESIZE THAT WILL PERMIT EASE OF DONNING/DOFFING.2. ALWAYS WEAR THE OVERSHOES UNDER YOUR OUTER TROUSERS.3. PERIODICALLY, INSPECT YOUR CHEMICAL PROTECTIVE OVE
43、RSHOES FORHOLES OR PUNCTURES. IN THE EVENT THEY DO DEVELOP HOLES, AREPUNCTURED, DISCARD IMMEDIATELY AND USE A SERVICEABLE PAIR.4. SHOULD YOUR OVERSHOES BECOME CONTAMINATED WITH GASOLINE, OIL,GREASE OR CLEANING FLUIDS, WIPE AND AIR DRY WITHIN TWO MINUTES. IF THEYCANNOT BE WIPED OFF AND DRIED WITHIN T
44、WO MINUTES THEY SHOULD BEREPLACED IMMEDIATELY.3.7 Finished measurements. The boots shall meet the finished measurements as specified on Drawing2-1-1371.4. REQULARTORY REQUIREMENTS4.1 Recycled, recovered materials. The offeror/contractor is encouraged to use recovered materials tothe maximum extent p
45、racticable, in accordance with paragraph 23.403 of the Federal AcquisitionRegulation (FAR).5. QUALITY ASSURANCE PROVISIONS5.1 Product conformance. The contractor shall meet the salient characteristics of this commercial itemdescription, conform to the producers own drawing, specifications, standards
46、, and quality assurancepractices. The Government reserves the right to require proof of such conformance.5.2. Visual examination. Each pair of overshoes shall be examined for the defects listed below.5.2.1 Defects.Pairing - not properly mated; not right and left of same sizeCleanness - any spot, sta
47、in, or foreign matter seriously affecting appearanceDesign - any characteristic not in accordance with specified requirements.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-595207Color and finish - color not uniform or not as specified; outside
48、finish glossy; finish(applicable to tacky or sticky.all components)Fastening loop - braid cut or frayed; fastener missing or not attached as specified;clip missing, mispositioned, or not securely attached; extrafastening loops not in overshoe.Vinyl - any hole, cut, tear, rupture or crack; any bliste
49、r, weak or thin spot;bubble or similar defective condition which does not result in athickness at the defect less than the minimum allowed thickness; anyrepair or patch.Construction and - any part of button malformed, broken, missing, or otherwiseworkmanship defective; any button clinched too tightly; any component orassembly omitted or misplaced; any operation omitted or notproperly performed.Marking (identifi- -
