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ASME B107.20-2004 pdf download

ASME B107.20-2004 pdf download.Pliers: Lineman’s, Iron Worker’s, Gas, Glass, Fence, and Battery.
1 SCOPE This Standard provides performance and safety re- quirements for pliers having gripping surfaces and/or cutting edges. Inclusion of dimensional data in this Stan- dard does not mean that all products described herein are stock production sizes. Consumers should consult with manufacturers concerning a list of stock produc- tion sizes. This Standard may be used as a guide by state au- thorities or other regulatory bodies in the formulation of laws or regulations. It is also intended for voluntary use by establishments that use or manufacture the cov- ered tools. 2 CLASSIFICATIONS Type I: Lineman’s Class 1: Square head Class 2: Round head Class 3: Square head with wire stripper Type II: Discontinued (designation retained for continuity with B107.20M-1998) Class 1: Square head Class 2: Round head Class 3: Square head with wire stripper Type III: Iron worker’s Class 1: Square head Class 2: Round head Type IV: Combination jaw Type V: Gas Type VI: Glass Type VII: Fence Type VIII: Battery 3 REFERENCES The following is a list of publications referenced in this Standard. ASME B107.25-2002, Pliers: Performance Test Methods Publisher: The American Society of Mechanical Engi- neers (ASME), Three Park Avenue, New York, NY 10016-5990; Order Department: 22 Law Drive, Box 2300, Fairfield, NJ 07007-2300 Guide to Hand Tools — Selection, Safety Tips, Proper Use and Care ASME B107.20-2004 1 Publisher: Hand Tools Institute (HTI), 25 North Broad- way, Tarrytown, NY 10591 4 DEFINITIONS button cutter: cutter located on the joint of Types IV and VII pliers for cutting wire. crusher: parallel flat areas on the inside handle surfaces near the pivot, designed for crushing. tape-pulling area: gap between handle and joint. Definitions of other terms used within this Standard may be found in ASME B107.25. 5 REQUIREMENTS The illustrations herein are descriptive and not re- strictive, and are not intended to preclude the manu- facture of pliers that are otherwise in accordance with this Standard. All figures are shown without comfort grips or springs. 5.1 Design Pliers shall be similar to the figure to which reference is made and shall be proportioned in all parts so as to be strong, durable, and easy to operate. Pliers shall pass applicable tests without cracking or breaking. 5.1.1 Type I, Lineman’s. Jaws shall have cutting edges on one side near the joint end. The cutting edges shall extend approximately one-half the length of the jaws. The remaining portions of the jaws shall have straight surfaces, scored with a straight or uniform di- amond-shaped pattern. There shall be a recess in the jaws behind the side cutter to provide satisfactory cut- ting clearance. The crusher surfaces may be smooth or scored. With the pliers closed, the ends of the jaws shall not touch, but shall have a maximum gap of 0.025 in. on nominal size 6 in. and 7 in. pliers, and 0.040 in. on nominal size 8 in. and 9 in. pliers (refer to dimension G on Figs. 1, 2, 3, 4, and 5). Type I, Class 1, Lineman’s, Square Head. Pliers shall have square heads and shall be similar to Fig. 1. They shall conform to dimensions shown in Fig. 1 and in Table 1.

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