ASME B107.37:2003 pdf free download PLIERS:wRE CUTTERS/ STRIPPERS
5) A stripping length stop may be provided so thatthe ends of the wires may be repeatedly stripped to a predetermined length. This stop shall be adjustable sothat any desired stripping length from 0.25 in. through1.0 in. may be selected and easily set. This stop shall beconstructed or designed so that no position in its range willobstruct the operator’s view of sthon rn its rangemarkings on the stripping blades as thex grovs athawire.
5.3.2 Type ,Wire Cutters/Strippers,Flat Jaws andHandles. Type Il pliers shall be fabricated by joining twohalves using flat, one-piece, jaw /handle construction.The joint shall serve as a pivot point, holding both halvesof the strippers together. These strippers shall stripgeneral-purpose solid and/or stranded copper wire. Thewire to be stripped shall be placed in the applicablegroove size, the pliers closed against a positive stop
(Class 4 excluded).and the insulation sluos1ule stopthe conductor. Type ll strippers shall consist essentially of jaws and handles with comfort grips and be similarto Figs. 3 through 6.
Class 1, 2, and 3 stripping edges shall provide varioussizes of grooves suitable for stripping the type and rangeof wire sizes specified in Table 3.A groove size shall beprovided for applicable wire gage sizes. Each grooveshall be accurate for the size marked. Pliers shall alsoprovide a straight, smooth cutting or shearing surfacethat shall be at least 0.30 in. long. A hole approximately0.13 in. in diameter and suitably located for loop bendingof stripped conductors may be provided.
Class 4 stripping edges are forward of the pivot andshall have an adjustable groove suitable for stripping the type and range of wire sizes specified in Table 3.Pliers shall also provide a straight, smooth cutting orshearing surface that shall be at least 0.30 in. long.Ahole approximately 0.13 in. in diameter and suitablylocated for loop bending of stripped conductors may beprovided.
5.4 Handles
5.41 Characteristics. Handles shall be shaped to pro-vide a comfortable grip, and shall be free from roughedges and sharp corners. Outer hand-gripping surfacesshall be smooth, knurled, impressed, or furnished withcomfort grips.
5.4.2 Strength. There shall be no evidence of cracksor breakage during the load test specified in para. 6.3.
5.4.3 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 shallpass the solvent resistance test specified in para.6.4.Comfort grips shall remain permanently attached undernormal use.
WARNING: Comfort grips on handles are not intended to giveany degree of protection against electric shock and shall not beused on or near live electric cireuits.
5.5 Joint
5.5.1 Construction.There shall be no excessive side-ways movement,play, or other indication of loosenessthat will affect pliers function when they are opened orclosed. Pliers shall pass the joint integrity test specified inpara,6.5.
5.5.2 Fastener Hardness. The fastener hardness shallbe from 25 to 55 HRC, except that when the fastenerreceives a case-hardening treatment, a maximum hard-ness equivalent to 60 HRC shall be permitted.
5.6 Jaws/Blades
5.6.1 Jaw Opening. Jaws shall open in a smooth anduniform manner to allow insertion of maximum ratedunstripped wire size.
5.6.2 Characteristics.There shall be no excessivemovement, play, or other indication of looseness of jawsthat will affect pliers’ function when they are in use.
5.6.3 Gripping Jaws. Type L Class 1 and 2 jaws shallhave continuous and uniform projections and shall bedesigned to firmly grip but not damage the wire insu-lation.
5.6.4 Hardness.Stripping and cutting surface hard-ness shall be 50-59 HRC.Hardness determination shallbe taken within 0.125 in. of stripping/cutting edges.
5.6.5Cut Test. Cutting blades shall pass the cut testin para.6.1.
5.7 Spring
When a spring is furnished, it shall be captive, dura-ble, and capable of opening the jaws under normal use.The spring shall open the jaws to allow insertion ofmaximum rated unstripped wire size.
5.8 Finish
5.8.1Appearance.All surfaces shall be free from pits,burrs,cracks, and other conditions that may adverselyaffect appearance or performance.Ground surfaces shailhave a maximum surface roughness of 150 pin. Ra(arith-metic average). with a cutoff length of 0.03 in.Surfacesshall be tested in accordance with ASME B46.1.
5.8.2Coating- All steel surfaces shall be coated toprevent rust. Coating shall be adherent, smooth, continu-ous, and free from pits,blisters, nodules, and any otherconditions that would interfere with their protectivevalue and serviceability.
5.9Marking
Pliers shall be marked in a plain and permanent man-ner with the manufacturer’s name or with a trademarkof such known character that the manufacturer andcountry of origin shall be readily determined. Gage sizeof the applicable wires shall be permanently and legiblymarked, and plainly visible on the face of the blade orjaw, just above or adjacent to the applicable strippingarea (except for Type II, Class 4 strippers).
6TEST PROCEDURES
Many tests required herein are inherently hazardous,and adequate safeguards for personnel and propertyshall be employed in conducting such tests.
ASME B107.37:2003 pdf free download
