DLA FF-C-450 F-2012 CLAMPS WIRE ROPE.pdf

1、AMSC N/A FSC 4030 FEDERAL SPECIFICATION CLAMPS, WIRE ROPE The General Services Administration has authorized the use of this federal specification by all federal agencies. 1. SCOPE AND CLASSIFICATION 1.1 Scope. This specification covers clamps, wire rope, bolted, and clamps, wire rope, threaded. The

2、se clamps are also commercially known as clips, wire rope. 1.2 Classification. 1.2.1 Types and classes. Clamps are of the following types and classes (see 6.1). Type I Single grip, single saddle, with U-bolts and nuts (MS16842). Class 1. Steel saddle Class 2. Malleable-iron saddle Type II Double gri

3、p, double saddle, with U-bolt and nuts (FF-C-450/1). Type III Double grip, double saddle, with bolts and nuts (MS51868). Class 1. Assembled with integral L-shaped bolts and nuts (MS51868). Class 2. Assembled with separate hex headed bolts and nuts (MS51868). Type IV Double grip, two taper threaded h

4、alf clamps with mating hexagon nut (MS16843). 2. APPLICABLE DOCUMENTS 2.1 Government publications. The following documents, of the issues in effect on the date of invitation for bids or request for proposal, form a part of the specification to the extent specified herein. Federal Specifications FF-C

5、-450/1 Clamp, Wire Rope, Double Saddled, Double-Grip, Steel Federal Standards FED-STD-H28 Screw-Threads Standards For Federal Services Military Specifications MS16842 Clamp, Wire Rope, Saddled, Single Grip, Steel MS16843 Clamp, Wire Rope, (Double Grip), Threaded Steel MS51868 Clamp, Wire Rope, Doubl

6、e Saddle, Double Grip, Steel INCH-POUND FF-C-450F 16 April 2012 SUPERSEDING FF-C-450E 9 March 2011 Comments, suggestions, or questions on this document should be addressed to DLA Land and Maritime, Columbus, ATTN: VAI, P.O. Box 3990, Columbus, OH 43218-3990, or email to FluidFlowdla.mil. Since conta

7、ct information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FF-C-450F 2 Military Standards MIL-STD-130 Iden

8、tification Marking of U.S. Military Property (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2 Other publications. The following documents form

9、a part of this specification to the extent specified herein. Unless a specific issue is identified, the issue in effect on date of invitation for bids or request for proposal shall apply. ASME INTERNATIONAL ASME-B18.2.2 Square and Hex Nuts (Copies of these documents are available online at http:/www

10、.asme.org or from the ASME International, Three Park Avenue, New York, NY 10016-5990.) ASTM INTERNATIONAL ASTM-A47/A47M Ferritic Malleable Iron Castings ASTM-A153/A153M Zinc Coating (Hot-Dip) on Iron and Steel Hardware ASTM-B633 Electrodeposited Coatings of Zinc on Iron and Steel ASTM-B695 Coatings

11、of Zinc Mechanically Deposited on Iron and Steel ASTM-E1444 Standard Practice for Magnetic Particle Testing (Copies of these documents are available online at http:/www.astm.org or from the ASTM International, P.O. Box C700, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) INTERNATIONAL ORG

12、ANIZATION FOR STANDARDIZATION (ISO) ISO 10012 Measurement management systems Requirements for measurement processes and measuring equipment (Copies of these documents are available from http:/www.iso.ch or to International Organization for Standardization American National Standards Institute, 11 We

13、st 42ndStreet, 13thFloor, New York, NY 10036.) NCSL INTERNATIONAL NCSL-Z540.3 Requirements for the Calibration of Measuring and Test Equipment (Copies of these documents are available from http:/www.ncsli.org or to National Conference of Standards Laboratories (NCSL), 2995 Wilderness Place, Suite 10

14、7, Boulder, CO 80301-5404.) SAE INTERNATIONAL SAE-AMS-QQ-P-416 Plating, Cadmium (Electrodeposited) SAE-J429 Mechanical and Quality Requirements for Externally Threaded Fasteners (Copies of these documents are available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 8

15、77-606-7323 (inside USA and Canada) or 724-776-4970 of these documents (outside USA), www.sae.org.) 2.3 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein (except for related specificatio

16、n sheets), the text of this Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FF-C-450F 3 document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained 3. REQUIREM

17、ENTS 3.1 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the applicable specification sheets and military standards. In the event of any conflict between requirements of this specification and the specification sheets and military standards,

18、 the latter shall govern. 3.1.1 Type I, class 1 clamps (see MS16842). Materials for saddles, bolts, and nuts shall be carbon steel, the properties of which shall withstand, without distortion, the torque test of 4.4.2. Saddles shall be made of steel forgings for wire rope sizes up through 2 inches i

19、nclusive; of steel castings for wire rope sizes larger than 2 inches. 3.1.2 Type I, class 2 clamps (see MS16842). Material for bolts and nuts shall be carbon steel, the properties of which shall withstand, without distortion, the torque test of 4.4.2. Saddles shall be made of malleable iron, 32510,

20、in accordance with ASTM-A47/A47M. 3.1.3 Type II clamps (see FF-C-450/1). Material for bolts, saddles, and nuts shall be carbon steel the properties of which shall withstand, without distortion, the torque test of 4.4.2. Saddles shall be made of forged steel. 3.1.4 Type III clamps (see MS51868). Mate

21、rial for Class 1 clamps and Class 2 saddles and nuts shall be carbon steel. Class 2 bolts shall be SAE-J429, grade 5 steel or better. The properties of all type III clamps shall withstand, without distortion, the torque test of 4.4.2. Class 1 saddles with integral L-shaped bolts and Class 2 saddles

22、shall be forged. 3.1.5 Type IV clamps (see MS16843). Material for type IV clamp bodies shall be of forged steel 1035 to 1040. The mating hexagon nut shall also be made of 1035 to 1040 steel. 3.2 Bolts. 3.2.1 Bolt threads. Thread series of bolts after hot dip zinc (galvanized) coating, electrodeposit

23、ed zinc coating, mechanically deposited zinc coating, or electrodeposited cadmium plating shall be Unified Coarse (UNC) Class 2A in accordance with FED-STD-H28. 3.2.2 Thread methods. Bolt threads may be rolled or cut at the option of the manufacturer. Threads shall not be recut or rerolled after hot

24、 dip zinc (galvanized) coating, electrodeposited zinc coating, mechanically deposited zinc coating, or electrodeposited cadmium plating. 3.3 Nuts. 3.3.1 Nut threads. Nut threads shall be of the same series and class as the bolts on which they are to be used (see 3.2.1). Hot dip zinc (galvanized) coa

25、ted nuts shall be tapped after coating except those galvanized nuts used with type III, class 2 clamps whose threads shall be cut oversize prior to being hot dip (galvanized) coated and then recut after coating to maintain a proper fit with the mating bolt. Electrodeposited threaded nuts shall not b

26、e recut after coating and plating. 3.3.2 Type. Nuts for types I, II, and III clamps shall be heavy, hexagon, nuts or flat nuts in accordance with ASME-B18.2.2 except nuts for type I, class 2 (malleable iron) saddles shall conform to the hexagon, flat nut of ASME-B18.2.2. 3.4 Dimensions. Dimensions a

27、nd weights of wire rope clamps shall see 3.1, as applicable, and as otherwise specified herein. Dimensional symbols are identified in see 3.1. Clamp sizes (see 3.1) are designated by the diameter of the wire rope with which they are used. 3.5 Construction. 3.5.1 Configuration. Configuration details

28、of clamp components may be to the contractors design; however, the clamps assembled shall be specified in FF-C-450/1, MS16842, MS16843, and MS51868, and shall conform to the applicable description of this specification (see 6.2). Provided by IHSNot for ResaleNo reproduction or networking permitted w

29、ithout license from IHS-,-,-FF-C-450F 4 3.5.1.1 Type I clamps. Type I clamps shall be in accordance with MS16842. The inside width between the parallel U-bolts legs shall be at least 1/16 inch greater than the nominal wire rope diameter for size one inch and under and 1/8 inch greater for sizes over

30、 one inch. The thread length on U-bolt legs shall be sufficient to permit properly gripping a rope doubled over. 3.5.1.1.1 Saddles (Type I). Saddles for class 1 and 2 of type I clamps shall have a semicircular path running in the longitudinal direction of the rope, sided by two wings on each side of

31、 the path for guiding the U-bolt and nesting the wire rope. The rope path shall have corrugations to accommodate a rope having a right-hand helix. The two holes for the U-bolt legs shall be dimensioned and spaced to fit the legs without binding. 3.5.1.2 Type II clamps. Type II clamps shall be in acc

32、ordance with FF-C-450/1. The width between the parallel U-bolt legs with saddles assembled shall accommodate the applicable wire rope. The thread length on the U-bolt legs shall be sufficient to permit the saddles to grip two ropes between saddles with nuts fully engaged. 3.5.1.2.1 Saddles (Type II)

33、. The “loop” saddle for type II clamps, which in the assemble is slipped between the U-bolt legs, shall be formed with outside grooves and two top ridges for centering and holding it inside the U-bolt loop. The “clamping” saddle shall be of a rectangular shape with taper ends and shall have the eyes

34、 dimensioned and spaced to fit the U-bolt legs without binding. The “loop” and “clamping” saddles shall be grooved for nesting the wire rope. These grooves shall be made with corrugations running in the direction of the rope strands of a rope having a right hand helix and they shall be formed to giv

35、e the maximum grip in the longitudinal direction with the rope remaining straight. 3.5.1.3 Type III clamps. Type III clamps shall be in accordance with MS51868. The width between the bolts of the assembled clamp shall accommodate the applicable wire rope. The clamps shall have the eyes so dimensione

36、d and spaced that the halves assemble without binding. 3.5.1.3.1 Bolts and saddles (Type III). The L-shaped bolt with integral clamp saddle for class 1 clamps shall be in accordance with MS51868 (see figure titled; “Clamp, double grip, double saddled wire rope type III, class 1”). The saddle and bol

37、t assembly for class 2 clamps shall be in accordance with MS51868 (see figure titled; “Clamp, double grip, double saddled wire rope type III, class 2”). Saddles of both classes shall be grooved for nesting the wire rope. These grooves shall be made to run in the direction of the rope strands having

38、a right-hand helix and they shall be formed to give the maximum grip in the longitudinal direction with the rope remaining straight. The thread length on the bolt section shall be sufficient to permit the saddles to grip two ropes between saddles with nuts fully engaged. 3.5.1.4 Type IV clamps. Type

39、 IV clamps shall be in accordance with MS16843. The threads of the component half clamps and nut shall be tapered and be in alignment when assembled. Each half clamp shall have the inside channel either cross corrugated or helically grooved for nesting the wire rope. Helical grooves shall run in the

40、 direction of the strands of a rope having a right-hand lay, unless a left-hand lay is specified (see 6.2). The nuts shall have no visible evidence of cracks and when specified (see 6.2) shall be capable of passing the magnetic particle test of 4.4.3.1. 3.5.2 Assembly. Clamps of the same size, type,

41、 and class, with the exception of type IV, shall assemble readily with random selection of component parts. Type IV half clamps are made in matching pairs and parts are not interchangeable. 3.5.3 Identification marking. Clamps shall be legibly and permanently marked with size and the manufacturers i

42、dentifying mark in accordance with MIL-STD-130. 3.5.4 Protective finish. Protective coating shall be, mechanically deposited zinc coating in accordance with ASTM-B695, class 50, type II zinc coated (hot dip galvanized) in accordance with ASTM-A153/A153M or zinc coating (electrodeposited) in accordan

43、ce with ASTM-B633, Fe/Zn 5, type VI (4.4.1). 3.5.4.1 Environmental safety note. If at all possible and for a safer environment, do not use cadmium or hexavalent chromate conversion. It is Recommend to use ASTM-B633, Fe/Zn 5, type VI. 3.5.5 Workmanship. All component parts of clamps shall be free of

44、defects such as burrs, fins, sharp edges, cracks, flaws, corrosion, and malformations. Threads and corrugations shall be clean and properly formed. Coating, as specified (see 3.5.4), shall be adherent and shall cover all surfaces uniformly. Provided by IHSNot for ResaleNo reproduction or networking

45、permitted without license from IHS-,-,-FF-C-450F 5 3.6 Performance. 3.6.1 Type I, II and III clamps. Types I, II, and III clamps shall be capable of passing the tests specified in 4.4.3.1. 3.6.2 Type IV clamps. The clamp grip shall be not less than 90 percent of its applicable wire rope rated breaki

46、ng strength for sizes 1/4 inch and under and not less than 85 percent for sizes over 1/4 inch. Nuts for type IV clamps shall be capable of passing the magnetic particle test of 4.4.3.1 when such test is required in the contract or order (see 6.2). 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility f

47、or inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for

48、 the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to presc

49、ribed requirements. 4.1.1 Test equipment and inspection facilities. The contractor shall establish and maintain a calibration system in accordance with ISO 10012 and NCSL-Z540.3. 4.2 Quality conformance inspection. Quality conformance inspection shall consist of the tests in 4.3. 4.2.1 Inspection lot. An inspection lot shall consist of clamps of the same type, class, material, protective coating, thread series, and size pro