1、MILITARY SPECIFICATION GRAPNELS, MARINE, TRIP WIRE, AND CRASH TRUCK MIL-G-613C 17 September 1963 MIL-G-O0613B(SHIPS) 25 November 1958 - SUPERSEDING MIL-G-bL3C 20 M 777770b 0428487 7 W MIL-G-613A O 22 June 1954 m o w O This specification has been approved by the Department of Defense and is man- dato
2、ry for use by the Departments of the Army, the Navy, and the Air Force. i. SCOPE 1.1 Scope.- This specification covers marine, trip wire and crash truck grapnels. 1.2 Classification.- Grapnels shall be of the following types, sizes and classes, as specified (see 6.1): 7 Type I - Heavy marine. Size 1
3、 - 450 pounds (4 prong). Size 2 - 225 pounds (5 prong). Size 3 - 170 pougds (3 prong). Size 1 - 100 pounds (5 prong). Class 1 - Wrought iron or mild steel. Class 2 - Nonmagnetic. Size 2 - 50 pounds (5 prong). Size 3 - 15 pounds (5 prong). Class 1 - Wrought iron or mild steel. Class 2 - Nonmagnetic.
4、Size 4 - 4 pounds (5 prong). Class 1 - Wrought iron or mild steel. Class 2 - Nonmagnetic. Size 5 - 2 pounds (3 prong). Type II - Light marine. Type III - Trip wire. Type IV - Crash truck. Size 1 - 26 ounces (3 prong). Size 1 - 5 pounds (4 prong). Size 2 - 11 pounds (3 prong). 2. APPLICABLE DOCUMENTS
5、 2.1 The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of the specification to the extent specified herein. SPECIFICATIONS FEDERAL FF-T-276 - Thimbles, Rope. QQ-1-686 - Iron, Wrought (Refined); Bars. QQ-S-633 - Steel Bars, Carbon, Col
6、d Finished and Hot Rolled (General Purpose). QQ-S-681 - Steel Castings. QQ-2-325 - Zinc Coating, Electrodeposited, Requirements for. RR-C-271 - Chains and Attachments, Welded, Weldless, and Roller Chain. RR-W-410 - Wire Rope and Strand. PPP-B-585 - Boxes, Wood, Wirebound. Provided by IHSNot for Resa
7、leNo reproduction or networking permitted without license from IHS-,-,-MIL-C -6 13c MIL-G-bL3C 20 9 7777406 0428488 7 =* cr Size 1 2 3 FEDERAL (Contd) PPP-B-601 - Boxes, Wood, Cleated-Plywood. PPP-B-621 - Boxes, Wood, Nailed and Lock-Corner. MIL-P-116 - Preservation, Methods of. MIL-C-132 - Crates,
8、Open, Wood; Maximum Capacity 2,500Pounds. MIL-C-1511 - Wire Rope, Steel (Carbon) Flexible, Preformed. MIL-E-15599 - Electrodes, Welding, Covered, Low- and Medium-Carbon Steel. MIL-S-17249 - Steel Castings, Hadfield Manganese (Low Magnetic Permeability). MIL-S-17758 - Steel Bar and Steel Forging, Nic
9、kel Modified Hadfield and Nickel-Molybdenum Modified Hadfield. MIL-Z-17871 -. Zinc-Coating (Hot-Dip Galvanizing). MIL-E-18038 - Electrodes, Welding, Mineral, Covered, Low Hydrogen, Medium and High Tensile MIL-S-20140 - Steel: Forgings for Welding. MIL-S-20166 - Steel: Bars and Shapes (for Hull Const
10、ruction) (Including Material for Drop and MILITARY Steel as Welded or Stress-Relieved. Miscellaneous Forgings). STANDARDS MILITARY MIL-STD-I05 - Sampling Procedures and Tables for Inspection by Attributes. MIL-STD-129 - Marking for Shipment and Storage. MIL-STD-130 - Identification Marking of U.S. M
11、ilitary Property, 2.2 Other publications. - The following document forms a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. OFFICIAL CLASSIFICATION COMMITTEE Uniform Freight
12、Classification Rules. (Application for copies should be addressed to the Official Ciassification Committee, 1 Park Avenue at 3. REQUIREMENTS 33rd Street, New York 16, New York.) Number of prongs Nominal weight Size of shackle Pounds Inches 4 450 1-3/8 5 225 1 3 170 1 3.1 Construction.- 3.1.1 Type I,
13、 heavy marine.- Type I grapnels shall be made of steel conforming to class 1 of QQ-S-681. Grapnels shall be in accordance with table I and figures 1, 2, and 3 for sizes 1, 2, and 3, respectively. When specified (see 6.1) the grapnel may be furnished without shackles. The eye for the tripping line sh
14、all be of forged steel conforming to grade M of MIL-S-20166 and shall be welded to the base of the shank. Shackles shail conform to type N, class 1 of RR-C-271. 3.1.2 Type II, light marine.- Sizes 1, 2, 3 and 4 grapnels shall have five prongs equaly spaced around the shank and size 5 grapnel shall h
15、ave 3 prongs equally spaced around the shank. Class 1 grapnels shall be made of steel conforming to MIL-S-20140 or grade A of QQ-1-686. Class 2 grapnels shall be made of non- magnetic material conforming to either alloy 1 or 2 of MIL-s-17758 or in accordance with type A or B of MIL-S-17249. 2 Provid
16、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-hL3C 20 W 9797706 065020 L W MIL-G-8lY: 3.1.2.1 Sizes 1 and 2.- The nominal weight of size 1 grapnels shall be 100 pounds, and of size 2 grapnels shall be 50 pounds. The grapnels shall be constructed in
17、 accordance with figure 4. The eye shall be fitted with a thimble capable of accommodating a rope of the circumference specified below. Thimble shall be in accordance with type I of FF-T-276. The eye for the tripping line shall be welded to the base of the shank. I Size 1 Size 2 Circumference of rop
18、e for thimble Inches 6 4 - 1/2 3.1.2.2 Sizes and 4.- The nominal weight of size 3 grapnel shall be 15 poundsu, and of size 4 grapnels shall be 4 po;dsdxgrapnels shall be constructed in accordance with figure 4. Six feet of 1/4 inch chain shall be attached to each grapnel by means of a pear-shaped co
19、nnecting link. Chain shall be welded steel, proof coil chain in accordance with type I, grade C, class 4 of RR-C-271. A second pear-shaped connecting link shall be attached to the other end of the chain. Both pear-shaped links shall be fabricated from 11/32 inch diameter bar stock, and shall be clos
20、ed by welding; zinc coating shall be done after welding. A thimble capable of accommodating a rope of the circumference specified below shall be fitted to the second pear-shaped link. The thimble shall be in accordance with type I of FF-T-276. Circumference of rope for thimble Inches Size 3 Size 4 3
21、 142 3.1.2.3 Size 5.- The nominal weight of size 5 grapnel shall be 2 pounds. The size 5 grapnel shall be made of steel confox to No. C1026 to C1035 of QQ-S-633. The dimensions and details of construction shall be as shown on figure 5. Welding, as indicated on figure 5, shall be accomplished with el
22、ectrodes in accordance with MIL-E-15599 or MIL-E-18038. 3.1.2.4 Nonmagnetic chain links and thimbles.- Nonmagnetic 1/4 inch chain and pear-shaped connecting links shall be made in accordance with either alloy 1 or 2 of MIL-S-17758. Nonmagnetic thimbles shall be made in accordance with either alloy 1
23、 or 2 of MIL-S-17758 or type B of MIL-S-17249. 3.1.3 Type III, trip wire,- 3.1.3,l Size 1.- Trip wire grapnels shall be made of steel conforming to grade M of MIL-S-20166. Grapnels shall have three prongs and be of a nominal weight of 26 ounces. The dimensions and assembly de- tails shall be as show
24、n on figure 6. 3.1.4 rippe IV, crash truck.- 3.1.4.1 Size 1.- Type IV, size 1 grapnels shall be made of material conforming to No. C1035 of QQ-S- 633. Grapnels shall have four prongs and be of a nominal weight of 5 pounds. The dimensions and construc- tion details shall be as shown on figure 7. Each
25、 grapnel shall be fitted with a 80-foot, 5/16-inch diameter 7 by 19 steel wire rope in accordance with MIL-C-1511. A 3/4-inch drop forged, steel, reversed eye hook shall be attached to the other end of the cable. Thimbles shall be used in securing the cable to the grapnel and to the hook. Thimbles s
26、hall be in accordance with type EI of FF-T-278. The cable connections to the hook shall be made with an eye splice or by the use of two 5/16 inch wire rope clips. The eye splice, if used, shall be wormed ami served. 3.1.4.2 Size 2.- Type IV, size 2 grapnels shall be made of steel conforming to No. C
27、1025 to C1060 of QQ-S-633. eels shall have three prongs and be of a nominal weight of 11 pounds. The dimensions and construction details shall be as shown on figure 8. Each grapnel shall be fitted with a 80-foot 1/2 inch UWeight without chain. 3 Provided by IHSNot for ResaleNo reproduction or networ
28、king permitted without license from IHS-,-,-3 , MIL-G-613C diameter, 8 by 19 plow steel, preformed, fiber core wire rope inaccordance wlth RR-W-410, type I, class except that the rope shall be galvanlzed. A casi or iorged steel ring conforming to the dlmenstons shown on figure 8 shall be attached to
29、 he other end o the wire rope. Thimbles shall be used In securlng the wire rop to the grapnel and in securing the rIng to the wire rope, Thimbles shall be in accordance with type fil of FF-T-276. The wlre rope connections to the grapnel and to the rtng shall be made w!th a minimum 01 two 1/2 inch wl
30、re rope ciips to each connection. . i r Dlmenslons Tolerance inches inch up to 1 1/16 1-1/8 10 2 1/8 2-1/8 10 6 1 /4 6-1/8 10 12 3/8 Over 12 1/2 A I 3.2 Tolerances.- used, 11 shaii be of such known character that the source of manulaclure may be readlly determined. In addi tion, the actual wetght of
31、 each type I grapnel shall be Impress-stamped on the shank. the letters “N-M“. 3.4.1 in addition to the marking specifled In 3.4, nonmagnetic grapnels shall be permanently marked wlt 3.2:l Bi ensionS.- The tolerances in dimensions specilied in table II wIll be permitted, provided that any comblnatto
32、n -E“-T7 o to erances ln dimensions used shall not result In a grapnel that exceeds the welght toler- ances (see 3.2.2). , *. 3.2.2 Weight.- For type I, all sizes, and type II, slzes i and 2 grapnels, a tolerance in weight o not more than Fen1 nor less than 2 percent o he nominal weight will be peFm
33、ltted. For type II, sizes 3, and 5, type III, and type fv grapnels, a tolerance in weight of not more than 10 percent nor less than 5 perceri ofathe nominal welght will be permitted. 3.3 Fnish.- AU grapnels, except as otherwlse speclfled tn 3.3.1 and 3.3,2, and all chains, rings, pear- shaped Itnks,
34、lps, eyes tor trlpping IInes, thimbles and hooks shall be completely and evenly zinc coated (galvanized) by the hot dip process. The coating shall b .xdherent, unlform, smooth, and free from uncoated spots or lnjurlous lumps, pits, blisters, acid and black s,mts, dross and flux. 3.3.1 Types I and II
35、 grapnels and all attachments shall be.z.lnc coated In accordance with MIL-2-17871, except that for nonmagnetlc grapnels In accordance wilh type A of MIL-S-17249, the grapnels shall be painte - In al N .d m I In 16 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
36、from IHS-,-,-MIL-G-bL3C 20 W 777770b OL128502 T i h MIL-G-613C 17 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-G-bL3C 20 m 777770b 0428503 L MIL-G-613C 18 L- t ti E I Lc Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-613C 20 W 7977906 0428504 3 W - I -7 al I 4 =-4t i- r Y O I MIL-G-613C Figure 8 - Type IV, size 2 grapnel. 19 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
