1、MIL-L-4355D 3 U 7779906 0395011i b U O MIL-L-43585D 18-Junc 1986 SUPERSEDING MIL-L-43585C 20 October 1980 MILITARY SPECIFICATION *LASTS, FOOTWEAR, SHOE, SAFETY TOE, U.S. MIL-7 This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. Thi
2、s document covers plastic footwear lasts used in the manu- facture of safety toe shoes. * 1.2 Classification. The lasts shall be of one type in the following sizes and widths as specified (see 6.2). TABLE I. Schedule of sizes Schedule of widths 2 2% 3 3% 4 4% 5 5% 6 6% 7 7% 8.8% 9 9% 10 10% 11 11% 1
3、2 12% 13 13% 14 O xx xx xx xx xx xx xx x x x x x x x x x XN N xx xx xx xx xx xx xx xx x x x x x x x x x R xx xx xx xx xx xx xx xx x x x x x x. x x x W xx xx xx xx xx xx xx xx x x xx x x x x x xw xx xx xx xx xx xx xx xx x x x x x x x x x - Beneficial comments (recommendations, additions, deletions) a
4、nd any pertinent data which may be of use in improving this document.should be addressed to: U.S. Army Natick Research, Development and Engineering Center Natick, MA 01760-5014 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this docum
5、ent or by letter. AMSC NIA FSC 8335 DISTRIBUTION STATEMENT A. Approved or public release; distribution is unlimited. THIS DOCUMENT CONTAINS /7 - PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - MIL-L-43585D 83 m 7777906 0375035 8 2. APPLICAB
6、LE DOCUMENTS MIL-L-43585D e qc 2.1 Government documents, 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. SPECIFICATIONS FEDERAL V-T-276 - Thread, Cotton CCC
7、-C-467 - Cloth, Burlap, Jute (or Kenaf) PPP-B-640 - Boxes, Fiberboard, Corrugated, Triple-Wall STANDARDS FEDERAL FED-STD-751 - Stitches, Seams and Stitchingc MIL I TARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by MIL-STD-129 - Marking for Shipment and Storage MIL-STD-130 - Identif
8、ication Marking of U.S. Military Property MIL-STD-147 - Palletized Unit Loads MIL-STD-731 - Quality of Wood Msmbers for Containers and Pallets Attributes (Copies of documents required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or
9、 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. . AMERCAN SOCIETY FOR TESTING AND MATERIAL
10、S (ASTM) D 1248 - Polyethylene Plastics Molding and Extrusion Materials E 18 - Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) (Technica
11、l society and technical association documents are generally available for reference from libraries. and using Federal agencies.) They are also distributed among technical groups 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-43585D 3 = 97777
12、0b 0375036 T MIL-L-43585D .i; 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein (except for associated detail specifications, specification sheets or MS standards), the text of this document shall take precedence. Nothing in this do
13、cument, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. -3 3. REQUIREMENTS 3.1 Guide sample. Samples, when furnished, are solely for guidance and 1 information to the contractor (see 6.3). Variations from this document may appear in the sample,
14、 in which case this document shall govern. 3.2 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 6.6). 3.3 Material (see 6.7). 3.3.1 Polyethylene blocks. The lasts shall be made from polyethylene blocks. The po
15、lyethylene blocks shall be made from solid high density polyethylene withut-filiers, conforming to type III or IV, category 4 or 5 of ASTM D 1248, except that the density of type IV shall not exceed 0.965. The color shall be the standard color used by the contractor. The blocks shall be made from vi
16、rgin material or reground scrap material of the same composition produced by regrind- ing clean unburned scrap produced in the fabrication of last blocks, finished lasts, and imperfect lasts. Scrap containing dirt or other foreign material shall not be used. O 3.3.2 Metal hinges, The metal hinges sh
17、all be a commercial type made of steel and zinc chromated to resist moisture. 3.3.3 Hinge pins. The hinge pins shall be made of steel wire and shall be heat treated to a hardness value of 45 to 50 Rockwell C scale of ASTM E 18. The pins shall be not less than 15/64 inch nor more than 19/64 inch in d
18、iameter. The pins shall be countersunk under the surface of-the sides of the lasts. pins shall be zinc chromated to resist moisture and shai be mechanically peened. The 3.3.4 Thimbles. The thimbles shall be manufactured from steel sheet, bar, or tubing stock and shall be heat treated to a hardness v
19、alue of 55 to 88 Rockwell B scale of ASTM E 18. The thimbles shall be of the drawn, split, or swaged tubing type. All thimbles shall be full-flanged with a closed or a partally closed bottom, and shall be the locked-in type, Dimensions for last thimbles shall correspond to the following when tested.
20、as specified in 4.4.1. Inside diameter 0.500 + 0.046 inch Overall length 1.625 7 0.063 inch Depth of hole 1.500 7 0.063 inch Wall thickness O. 0475-to O. 095 inch 0.750 + 0.063 inch Flange diameter - .3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
21、-MIL-L-Ll3585D 83 M 999990b 03950117 11 MIL-L-43585D 3.3.5 Heelplates. The heelplates shall be not less than 3-1/8 inches long on size 8-1/2, shall measure proportionate to normal grade on other sizes, and shall have a 1/2 + 1/32 inch hole in the center for insole tacking and five countersunk nail h
22、oles as specified in 3.5.3. from either hot-galvanized or electro-galvanized sheet steel, 0.050 + 0.005 inch thick and shall be treated to a hardness value of 48 to 67 Rockwell scale of ASTM E 18. The heel plates shall be made 3.3.6 Heelplate attaching nails. The nails for attaching the heelplate on
23、 the last shall be 15 or 16 gage, 5/8 to 3/4 inch long, barbed, iron wire nails with a 1/8 + 1/32 inch diameter flat head; shall have a ringed chisel point; and shall not be cement coated finish when tested as specified in 4.4.1. 3.3.7 - Ink. Ink for markingthe lasts shall be black, shall not blur,
24、shall meet the marking adhesion requirements in 3.9.1, and shall be set permanently into the lasts by heat. 3.4 Models, patterns, and templates, I 3.4.1 Turning models. Turning models for each of the sizes and widths required will be furnished by the Government (see 6.4). Turning models shall be in
25、whole sizes inwidths XN, N, R, W, XW with the final measurements or the lasts of that size plainly marked on each model. Only two sizes shall be turned from any model up to size 14, namely, the model size and one-half size up. No last shall be turned from a model of a different width. Sizes above 12
26、 shall be turned to fit size 12, style No. 400 steel box toe. 3.4.2 Replacement of turning models. Models worn to the point of unservice- ability in the production of properly graded lasts will be replaced by the Government. All models shall be returned to the Government at the close of the contract
27、. Worn models that need replacement shall be marked “unserviceable“. 3.4.3 Last bottom patterns. Necessary turning bottom patterns and finished bottom patterns will be loaned to the contractor by the Government (see 6.4). When prehinging method is used, the turning bottom patterns do not apply. 3.4.
28、4 Templates. Templates for use in checking the lasts will be loaned to the contractor by the Government (see 6.4). I 3.5 Construction. 3.5.1 Hinge cutting, slotting and assembly. The hinge V-cut and circle sawcut shall correspond to the hinge pin holes so that the last, with a correctly inserted hin
29、ge, will open and close in a satisfactory manner. All inside sharp corners on the plastic lasts shall have a slight radius made by running over the edge with a hot wire to eliminate stress risers made by cutters during the hinge cutting operation. The use of a radius ground cutter to eliminate stres
30、s risers shall be permitted. As an alternate, the equipment and method used for prehinging is permitted. e. a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-l l i I I I I l i I MIL-L-43585D 83 777970b 03750L 3 MIL-L-43585D 3.5.2 Thimble hole. The th
31、imble hole shall be bored to such a size that when the thimble is inserted in the last, it shall be locked into the plastic. Thimbles shall be countersunk on lasts. On sizes 7-1/2 through 12 (all widths), the thimble hole shall be centered 1-1/2 f. 1/16 inches from the back of the last top. On sizes
32、 below 7-1/2 and above 12, the thimble holes shall be centered 1-3/8 - + 1/16 and 1-5/8 - + 1/16 inches respectively, from the back of the last * top. 3.5.3 Heelplating. The heelplate on the finished last shall be flush with, having a maximum width of not more than 1/16 inch in the curved area begin
33、ning 3/8 inch from the breast line of the plate, is acceptable. The margin of plastic in the area 3/8 inch from the breast line on each side of the plate is not limited. The breast of the heelplate shall butt up to the plastic. The heelplates shall be attached with five nails specified in 3.3.7. The
34、 position of the heel nails shall be according to- commercial practice with five counter- sunk nail holes punched not less than 3/8 inch nor more than 5/8 inch from the edge of the plate except that the two front nail holes shall be not less than 3/16 inch nor more than 3/8 inch from the breast of t
35、he heelplate. The side nails shall be located equidistant between the breast nails and the back nail. The heelplates shall be punched with a 1/2 2 1/32 inch tack hole located approximately in tha center of the heelplate, measuring both from breast to the end of the heelplate and from side to side. c
36、onform to the contour of the heel seat of the last. 5 but not overlaying, the outside edge of the last. A narrow margin of plastic, The heelplates shall be cupped to 3.5.4 Heel and toe making. The heel and toe shall be shaped following the heel and toe profile templates as specified in table II. siz
37、e either upward or downward will be permitted in the applicable width for the toe. A tolerance of 1/2 *TABLE II. Heel and toe ternplates Widths Sizes 2 2% 3 3% 4 4% 5 5% 6 6% 7 7% 8 8% 9 9% 10 10% 11 11% 12 12% 13 13% 14 XN - 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 N 6 7 8 9
38、 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 R 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 W. 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 XW 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 33 32 33 34 35 36 NOTE:
39、 Identical template numbers are for the same template regardless of width. The adjacent numbered templates are to be used for the*tolerance for a given templqte, i.e. ; the tolerance for template 10 is 9 and 11. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
40、rom IHS-,-,-MIL-L-q3585D 83 m 7777906 0375037 5 m MI L-L.-43 5 8 50 3.6 Measurements and grading. The contractor shall check the turning models but shall make no modifications except for slight adjustments to fit the turning model bottom to the paper lest bottom patterns furnished by the Government
41、when this may be necessary due to swelling of the wood. The fini-shed lasts shall conform to the templates listed in table II and to the measurements listed in table III. The tolerance for the finished stick length shall be + 1 point, and for ball, waist, instep and heel girth shall be + 2 points. b
42、ottoms shall conform to measurements of finished last bottom patterns furnished by the Government with tolerances of + 1/32 inch in length and + 1/48 inch in width. All dimensions, except tolerances for bottom length and-width, shall be taken by means of sticks and tapes whose calibrations are geome
43、trically graded and which will be loaned by the Government (see 6.4). Finished last L 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-q355D 83 777970b 0375020 L W MIL-L-43585D 2TABLE III. Geometric measurements of U.S. MIL-7 lasts (see 6.5) S
44、 izes Widths 2 2% 3 3% 4 4% 5 5% 6 6% 7 7% 8 _ . XN Ball - - 973 978 983 988 993 998 1003 1008 1013 1018 1023 Waist - - 970 975 980 985 990 995 1000 1005 1010 1015 1020 Instep - - 988 993 998 1003 1008 1013 1018 1023 1028 1033 1038 Heel - - 1119 1124 1129 1134 1139 1144 1149 1154 1159 1164 1169 Leng
45、th - - 1163 1168 1173 1078 1083 1088 1093 1098 1103 1108 1113 N Ball 979 984 989 994 999 1004 1009 1014 1019 1024 1029 1034 1039 Waist 976 981 986 991 996 1001 1006 1011 1016 1021 1026 1031 1036 instep 994 999 1004 1009 1014 1019 1024 1029 1034 1039 1044 1049 1054 Hee 1 1115. 1120 1125 1130 1135 114
46、0 1145 1150 1155- 1160 1165 1170 1175 Length 1155 1160 1165 1170 1075 1080 1085 1090 i095 1100 1105 1110 1115 R Ball 995 1000 1005 1010 1015 1020 1025 1030 1035 1040 1045 1050 1055 Waist 992 997 1002 1007 1012 1.017 1022 1027 1032 1037 1042 1047 1052 instep 1010 1015 1020 1025 1030 1035 1040 1045 I0
47、50 1055 1060 1065 1070 0 Heel 1121 1126 1131 1136 1141 1146 1151 1156 1161 1166 1171 1176 1181 Length 1057 1062 1067 1072 1077 1082 1087 1092 1097 1102 1107 1112 1117 W Ball Waist Ins tep Hee 1 Length XW Ball Waist Ins tep Heel Leng th 101 1 1008 1026 1027 1059 1027 1024 1042 1133 1061 1016 1013 103
48、1 1032 1064 1032 1029 1047 1138 1066 1021 1018 1036 1037 1069 1037 1034 1052 1143 1071 1026 1023 1041 1042 1074 1042 1039 1057 1148 1076 1031 1028 1046 1147 1079 1047 1044 1062 1153 1081 1036 1033 1051 1152 1084 1052 1049 1067 1158 1086 1041 1038 1056 1157 1089 1046 1043 1061 1162 1094 1057 1054 107
49、2 1163 1091 1062 1059 1077 -1168 1096 1051 1048 1066 1167 1 o99 1067 1064 1082 1173 1101 1056 1053 1071 1172 1104 1072 1069 1087 1178 1106 1061 1058 1076 1177 1109 1077 1074 1092 1183 1111 1066 1063 1081 1182 1114 1082 1079 1097 1188 1116 1071 1068 1086 1187 1119 1087 1084 1102 1193 1121 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-43585D 83 77
