ASME B107.36 pdf download PLIERS: LOCKING CLAMP, AND TUBINI! PINCH-OFF
4.4 Handles Handles of pliers shall be through hardened from 30 to 50 HRC or case hardened from 75 to 86 HRlSN, with a case depth of a minimum of 0.010 in. (0.25 mm). Handles shall be so shaped as to afford a comfort- able grip and shall be free from rough edges and sharp comers. When the pliers are locked in any position of the jaws, the minimum handle clearance between the fixed and movable handle shall be as specified in the appropriate tables. Outer hand-gripping surfaces of handles shall be smooth, knurled, or impressed.
4.5 Joints Pliers joints shall have no excessive looseness, play, or any other indications of side play of the two halves of the pliers when opened or closed, which could impair the function of pliers. Joint fasteners shall be through hardened from 25 to 50 HRC. Where fasteners receive a case hardening treatment in addition to the through hardening, a maximum hardness of 60 HRC or equivalent will be permitted.
4.6.1 Jaw Openings. Ends of jaws shall open, when adjusted by the screw, to the entire respective clamping range minimum specified in Tables 2 through 5. Pliers shall operate in a smooth and uniform manner.
4.6.2 Jaw Hardness. Jaws shall be through hard- ened from 35 to 50 HRC or case hardened from 83 to 90 HRlSN, with a case depth minimum of 0.010 in. (0.25 mm). If provided, swivel pads need not be hardened.
4.7 Adjusting Screw have a minimum hardness of 30 HRC. Adjusting screw located at the end of handle shall 4.8 Marking Pliers shall be marked in a plain and permanent manner with the manufacturer’s name or with a trade- mark of such known character that the source of manufacture and country of origin can be readily deter- mined. Marking shall be as permanent as the normal life expectancy of the pliers, providing the surface has not been subjected to a fretting or abrading action, and be capable of withstanding the cleaning normally experienced during its intended use.
4.9.1 Appearance. Surfaces shall be tested in ac- cordance with ASME B46.1. Surfaces shall be free from pits, nodules, burrs, and other conditions that may adversely affect performance or appearance. Ground surfaces shall have a maximum surface roughness of 200 kin. (5.1 pm) arithmetic average. Measurement of the finish shall be made with a measuring instrument using a cutoff length of 0.03 in. (0.8 mm).
4.9.2 Coating. Coating shall be adherent, smooth, continuous, and free of pits, blisters, nodules, oxide scale, and any other conditions that may interfere with the protective value and serviceability of the pliers. Cadmium plate shall not be allowed. Pliers shall be coated with a supplementary rust-preventative treatment. 4.10 Spring Spring shall be capable of opening the jaws to the maximum value of the respective clamping range minimum dimension as specified in the tables for the individual type and class of pliers.
4.1 1 Dimensions Dimensions shall be determined by measuring the pliers with jaws in the closed and locked position. The overall length measurement shall include the adjusting screw.
4.12 Workmanship Requirements within this Standard are intended to describe the best commercial quality pliers available. Pliers shall conform to the requirements of this Standard. 5 TEST PROCEDURES 5.1 Safety WARNING: MANY TESTS REQUIRED HEREIN QUATE SAFEGUARDS FOR PERSONNEL AND ING SUCH TESTS. ARE INHERENTLY HAZARDOUS, AND ADE- PROPERTY SHALL BE EMPLOYED IN CONDUCT- 5.2 Hardness Test with ASME B107.25M, para. 5.3.