ASME B107.500-2010 pdf download.Pliers.
1 SCOPE This Standard provides performance and safety requirements for pliers suitable for cutting wire. Pliers shall have cutting edges diagonal to or at right angles to their longitudinal axis. Inclusion of dimensional data in this Standard does not mean that all products described herein are stock production sizes, nor that all production sizes are listed. Consumers should consult with manufacturers concerning lists of stock produc- tion sizes. This Standard may be used as a guide bystate authori- ties or other regulatory bodies in the formulation oflaws or regulations. It is also intended for voluntary use by establishments that manufacture the tools covered. 2 DEFINITIONS Definitions of terms used within this Standard may be found in ASME B107.25. 3 REFERENCE The following publication is referenced in this Standard. The latest edition shall be used. Guide to Hand Tools — Selection, Safety Tips, Proper Use and Care Publisher: The Hand Tools Institute (HTI), 25 North Broadway, Tarrytown, NY 10591 (www.hti.org) 4 CLASSIFICATIONS Type I: diagonal cutting, regular nose Class 1: standard cutting edges Class 2: semiflush cutting edges Class 3: flush cutting edges Type II: regular nose, compound action Class 1: standard cutting edges Class 2: semiflush cutting edges Class 3: flush cutting edges Type III: discontinued (designation retained for conti- nuity with B107.11-2002) Type IV: end cutting Class 1: standard cutting edges Class 2: semiflush cutting edges Class 3: flush cutting edges
5 PERFORMANCE REQUIREMENTS The illustrations shown herein are descriptive and not restrictive, and are not intended to preclude the manufacture of pliers that otherwise comply with this Standard. All figures are shown without comfort grips. Pliers shall withstand applicable tests without cracking or breaking. 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. Cutting edges shall be designed to produce one of the severed wire profiles illustrated in Fig. 1. 5.1.1 Type I, Diagonal Cutting, Regular Nose. One side of the jaws shall be recessed to provide a suitable cutting edge clearance. Pliers shall be similar to Fig. 2, 3, 4, or 5 and shall conform to dimensions shown in Table 1 for the size specified. Type I pliers may have stripping notches (a W-shaped notch on the outside of each jaw) and/or a skinning hole (0.052 in. ± 0.005-in. diameter hole in the cutting edges for stripping insula- tion from wire) as shown in Fig. 4. Type I pliers may also have a cushion grip throat similar to that shown in Fig. 5. 5.1.2 TypeII, RegularNose, Compound Action. Pliers shall be of a compound leverage construction with spring-operated, self-opening handles. Pliers shall be similar to Fig. 6 and conform to the dimensions shown in Table 1 for the size specified. 5.1.3 Type IV, End Cutting. The cutting edges shall be at right angles to the plane of the handles. Pliers shall be similar to Fig. 7 and shall conform to dimensions shown in Table 1 for the size specified. 5.2 Materials The materials used in the manufacture of pliers shall be such as to produce pliers conformingto this Standard. 5.3 Handles 5.3.1 Characteristics. Handles shall be shaped to provide a comfortable grip and shall be free from rough edges and sharp corners. Ends ofhandles shall not touch when the jaws are in a closed position.
5.3.2 Permanent Set. Permanent set of the handles for all types, except Type II, shall not exceed 0.04 in. when subjected to the handle load test specified in para. 6.3. Handles contacting each other during load testing shall constitute failure. 5.3.3 Comfort Grips. When comfort grips are fur- nished on handles, they shall be made of rubber, plastic, or other suitable material capable of withstanding nor- mal use without deteriorating or rubbing off and shall pass the solvent resistance test specified in para. 6.4. Comfort grips shall remain permanently attached under normal use. Unless specifically designed, labeled, and tested for suchuse, tools with comfortgrips shall notbe advertised or marked as having any nonconductive or electrically insulating properties. 5.3.4 Hardness. Handles shall have a hardness from 35 HRC to 50 HRC or equivalent. 5.4 Joint 5.4.1 Construction. There shall be no excessive side- ways movement, play, or other indication of looseness when pliers are opened or closed that will affect their function. 5.4.2 Fastener Hardness. The fastener hardness shall be from 25 HRC to 50 HRC except when the fas- tener receives a case-hardening treatment in addition to the through hardening, in which case a maximum hardness equivalent to 60 HRC shall be permitted.