ASME B107.11 pdf download PLIERS: DIAGONAL IUTTINI AND END CUTTINE
5.5.2 Permanent Set. Permanent set of the handles for all types, except Type II, shall not exceed 0.04 in. (1.0 mm) when subjected to the handle load test specified in para. 6.4. Handles contacting each other during load testing shall constitute failure.
5.5.3 Comfort Grips. When comfort grips are furnished on handles, they ch& 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. 6.5. Comfort grips shall remain permanently attached under normal use. WARNING: COMFORT GRIPS ON HANDLES ARE NOT INTENDED TO GIVE ANY DEGREE OF PROTECTION AGAINST ELECTRIC SHOCK AND SHALL NOT BE USED ON OR NEAR LIVE ELECTRIC CIRCUITS.
5.6.1 Construction. When pliers are opened or closed, there shall be no excessive sideways movement, play, or other indication of looseness that will affect their function.
5.6.2 Fastener Hardness. The fastener hardness s h d be from 25 HRC to 50 HRC except when the fastener receives a case hardening treatment in addition to the through hardening, a maximum hardness equivalent to 60 HRC shall be permitted.
5.7.1 Jaw Opening. Jaw opening shall be measured at tip of the jaws. Jaws shaii open in a smooth and uniform manner to the respective minimum jaw opening as specified in applicable tables for individual type and class of pliers using the procedure specified in para. 6.6. Beyond minimum opening, jaws may open with increasing loads until the positive stop of the tool is engaged.
5.7.2 Cutting Edge Hardness. Cutting edges shall have a hardness from 55 HRC to 65 HRC or equivalent. The balance of the jaw area shall have a minimum hard- ness of 35 HRC.
5.7.3 Cushion Grip Throat. Type I Class 3 pliers shali grip and retain cut wire end. The cushion grip throat shall be made of rubber, plastic, or other suitable mate- rial capable of withstanding normal use without deterio- rating or rubbing off and shall pass the solvent resistance test specified in para. 6.5. Cushion grip throat shall remain permanently attached under normal use.
5.8 Springs When a spring (or springs) is furnished, it shall be captive, durable, and capable of opening the jaws under normal use. The spring shall open the jaws to minimum jaw opening as specified in the applicable tables.
5.9.1 Appearance. Pliers shall have finished surfaces as indicated in Fig. 1. These surfaces shall have a maxi- mum surface roughness of 63 kin. (1.6 km), arithmetic average. Measurement of the finish shall be made with an instrument using a cutoff length of 0.03 in. (0.8 m) (refer to ACME B46.1). All other surfaces shall be free of pits, burrs, cracks, and other conditions that may