ASME B107.12 pdf download.Nutdrivers.
ASME B107.12 provides performance and safety requirements for nutdrivers with an integral socket and shaft that utilize a screwdriver-type handgrip, Inclusion of dimensional and functional data in this Standard is not intended to imply that all products described herein are stock production sizes. Consumers are requested to consult with manufacturers concerning lists of stock production sizes.
This Standard may he used as a guide by state authorities or other regulatory bodies in the formulation of laws or regulations It is also intended for voluntary use by establishments that usc or manufacture the tools
covered.
2 CLASSIFICATiON
Type I: Conventional length
C1a 1: Solid shaft
Style A: Conventional handle
Style B: Cushion grip handle
C1a 2: Hollow shaft
Style A: Conventional handle
Style B: Cushion grip handle
Type II: Stubby length
Style A: Conventional handle
Style H: Cushion grip handle
Type 111: Miniature handle
3 REFERENCES
The following is a list of publications referenced in this Standard.
ASME H46. 1-1995 Surface Texture, Surface Roughness, Waviness, and lay
ASME 13107.4M-1995 Driving and Spindle Ends for l’ortable Hand. Impact, Air, and Electric Tools (Percussion Tools Excluded)
ASME B107.17M-1997 Gages, Wrench Openings, Reference
Publisher: The American Society of Mechanical Engineers, Three Park Avenue, New York, NY 10016-5990; Order Department: 22 Law Drive, Box 2300, Fairfield, NJ 07007-23(X)
4.6 Socket Opening
Socket openings shall be 6-point and conform to the gaging requirements of ASME B107.17M. Manufacturing process or pilot holes, if present in the socket openings, shall not exceed the minimum allowable across flats dimension times 1.04.
4.7 Shaft Finish
4.7.1 Surface Finish. Socket and shaft surfaces shall have a rust preventive treatment and be essentially free from pits, nodules, burrs, cracks, and other conditions that would adversely affect the performance or safety of the tool. When provided, coatings shall be adherent, smooth, continuous, and free from any conditions that would interfere with their protective value, safet) and function. The socket and shaft shall have a maximum of 125 gin. (3.18 p.m) Iarithmetic averagel finish when tested in accordance with ASME B46.1. All edges and corner’. shall he smooth.
4.7.2 CoatIngs. The sockets, shafts, and internal drivers shall be coated with one (or a combination) of the following coatings:
(a) Nickel-Chromium Coating. The coating shall be a bright, protective, decorative nickel-chromium plating, and shall pass the surface adhesion test as specified in the file, grind-saw, or heat quench test of ASTM B 571. Nutdrivers shall either pass the Alternative Coating Test (para. 5.4) or have minimum coating thicknesses of 0.0002 in. (0.0051 mm) for nickel or nickel-iron and
0.000005 in. (0.00013 mm) for chromium.
(I’) Oxide or Phosphate ‘oa1inç. The coating shall consist of a chemically-produced oxide or phosphate, followed by a coating of rust preventative.
(C) Zinc. The coating shall be a protective dcctrodeposited zinc of 0,0003 in. (0.0076 mm) minimum thickness and shall have a chemical or electromechanical chromating. The zinc coating shall pass the corrosion test specified in para. 5.4.5.
(d) Alternative Coatings. Alternative coatings may be used in lieu of nickel-chromium plating and shall be subjected to, and shall pass, the Alternative Coating Test, as specified in para. 5.4.
ASME B107.12 pdf download
