ASME B107.100 pdf download

ASME B107.100 pdf download

ASME B107.100 pdf download MpENOucQlVhtluito INCORPURATING ASME B107.B,ASME B107.9,ASME B107.39, ASME B107.40
4.5 Proof Torque When tested as specified, wrenches shall withstand the proof torque specified in the applicable tables without failure or permanent deformation (set), which might affect the durability or serviceability of the wrenches. Proof torque is a predetermined test torque to which a sample is subjected before acceptance.
4.6 Wrench Openings Wrench openings shall be such as to ensure accept- ance when gaged with gages conforming to ASME B 107.17M.
4.7 Finish
4.7.1 Surface Finish. See Fig. 1. All surfaces shall be thoroughly cleaned, free from cracks, and essentially free from burrs, pits, nodules, and other detrimental conditions.
(a) Minimum Area of Surj5ace Finish. A minimum of 180 deg of the outer periphery of the box ends (90 deg on each side of the longitudinal axis of the wrench) and both faces of the open end shall be bright and shall have a maximum roughness height value of 30 microinches (0.76 micrometers) (arithmetic average us- ing a 0.03 in. cutoff on the surface measuring instru- ment). Wrenches with phosphate or oxide coatings are excluded from this requirement.
(b) Flash. Flash shall be completely removed from the periphery of the heads of all box ends, from the circumference of all open ends, and from that portion of the handle which shall be essentially straight and uniform in sectional dimensions, as shown in Fig 1. Any remaining flash on any surface shall blend smoothly with adjacent surfaces; external sharp edges shall be broken to 0.016 in. (0.38 mm) radius minimum, and shall not project more than 0.016 in. (0.38 mm) from adjacent surfaces.
4.7.2 Coatings. The coating shall be adherent, smooth, continuous, and free from uncoated areas, pits, blisters, nodules, and any other conditions, which would interfere with their protective value and serviceability. Plating contact marks should be kept to a minimum. The wrench shall be coated with one of the coatings in accordance with (a), (b), (c), or (d) below. The customer may specify the type of coating required.
(a) Nickel-Chromium. Wrenches shall have a protec- tive-decorative nickel-chromium plating. The nickel thickness shall be a minimum of 0.000150 in. (0.0038 mm). The chromium thickness shall be a minimum of 0.000003 in. (0.000076 mm). A nickel-iron undercoating (16% iron max.) may be substituted for nickel.
(b) Phosphate. Wrenches shall have a chemically produced phosphate coating followed by a coating of rust preventative.
(c) Oxide. Oxide coated wrenches shall have a coating consisting of a chemically produced oxide followed by a coating of rust preventative.
(d) Alternative Coatings. Wrenches not falling within one of the coating types listed above shall be finished in accordance with predetermined requirements between manufacturer and customer. Alternative coatings may be used in lieu of Nickel-Chromium and shall be subjected to the Coating Process Qualification Test as specified in para. 5.3. 4.8 Design The wrench shall have one open end and one box end of identical nominal size. The open end shall be suitable for use on hexagonal and square-headed bolts and nuts. The box opening shall have either a 6 or 12 point opening as specified. The wrench shall conform

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