A-A-52208
preclude loosening during hard usage. The handles shall have a covering of insulation for the protection of the operator against high voltages, and bumpers or stops to prevent the handles from being closed beyond the effective cutting point and pinching the hand of the operator. The handles shall be capable of
withstanding a force of 175 pounds on each handle with no permanent deformation in excess of 3/32 inches between the handles, and shall be verified by the test specified in 4.2.1. Handles of fiberglass tubing are acceptable provided they are securely attached, the ends securely plugged, and pass all applicable tests. If fiberglass handles are provided, the dielectric tests in paragraphs 4.2.5 through 4.2.10 are not required.
2.2.5 Bolts. The bolts of the cutter shall be fabricated from a commercial grade carbon steel in accordance with the manufacturer's standard practice. Before assembly, these bolts shall be hardened to a Rockwell hardness on the Rockwell C scale of not less than 30 HRC nor greater than 40 HRC, and shall be verified by the test specified in 4.2.2. The threaded portion of the bolt shall not exceed more than one full thread into the bolt bearing surface of the cutter part when threaded to receive the bolt. The bolts shall have locking means to prevent rotation or loosening of the bolt. When bolt and nut are used, the nut shall be of the prevailing torque locknut type.
2.2.6 Groping hook guide. The groping hook guide shall be no less than 3/32 inches thick, shall consist of a double hook similar to that shown in figures 1 and 2, and shall be fabricated from a commercial grade carbon steel in accordance with the manufacturer's standard practice. The hook guide shall be
attached to the cutting head so that the double hook shall be capable of groping for and guiding a wire or cable between the cutter jaws to cut. The double hook shall extend 1 7/8 inches, plus or minus 1/8 inch beyond the cutting head. The hook guide shall withstand a free drop of 3 feet on a hard surface, with no binding of the jaws or no visible evidence of deformation or fractures when tested as specified in 4.2.4.
2.2.7 Intermediate links. The cutter shall have intermediate links that in combination with the handles and jaws, shall provide the cutter with compound movement and mechanical advantage for cutting wire. The intermediate links shall be fabricated from a commercial grade carbon steel in accordance with the manufacturer's standard practice. The intermediate link
shall be a separate link or integral with the handle and shall be provided with means for adjustment of the jaws.
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