ASME B107.12:2004 pdf free download

ASME B107.12:2004 pdf free 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 cre requested to consult with manufacturers concerning lists of stock production sizes.
This Standard may be 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 use or manufacture the tools covered.
2 CLASSIFiCATiON
Type I: Conventional length
Class 1: Solid shaft
Style A: Conventional handle
Style 13: Cushion grip handle
Class 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 III: Miniature handle
3 REFERENCES
The following is a list of publications referenced in this Standard.
ASME 1346.1-1995 Surface Texture, Surface Roughness, Waviness, and Lay
ASME B107.4M-1995 Driving and Spindle Ends for lortable 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 O70O7-230
WARNING: Cushion grips are not intended to give any degree of protection against electrk shock and shall not be used on or near live electrical circuits.
S TEST PROCEDURES
Many of the tests herein are inherently hazardous; adequate safeguards for personnel and property shall be employed in conducting these tests.
5.1 Torsional Moment Test
Test shall be conducted in a manner similar to that shown in Fig. 5. Test mandrels shall conform to the dimensions in Table 5 or SM and shall be hardened to not less than 55 HRC. The socket openings shall be gaged prior to testing. The tests shall be conducted after preheating the entire tool to a uniform temperature of 125°F (57.7°C), and the torque specified in the applicable table shall be applied within 1 mm after removing the tool from the heating medium. The socket of the tool shall be inserted over the mandrel to the depth specified. The torque shall be applied and sustained for a minimum of 10 sec. The handle may be gripped in the area beyond the insertion distance of the socket shaft by suitable means. It shall be permissible to support the handle in order to maintain the tool in a suitable position for testing, provided the supporting means does not exert pressure end-wise during testing. Any cracking, failure of the socket opening to conform to the gaging requirement, or failure to sustain the proof torque for the prescribed time shall constitute failure.
When tested to the minimum assembly torque value specified, the assembly shall not show a permanent slippage between the shaft and handle.
5.2 Bending Moment Test
Test shall be conducted in a manner similar to that shown in Fig. 6. Test mandrels shall conform to the dimensions in Table 6 or 6M and shall be hardened to not less than 55 HRC. A force of such magnitude to create the bending moment specified in the applicable table shall be applied at or near the middle of the natural grip of the handle for a minimum of 10 sec. The force is to act perpendicular to the axis of the tool. The tool shall not crack, break, or show any signs of visible permanent set or looseness in the handle. The test shall be conducted at room temperature.
5.3 Solvent Tests
Nutd rivers shall he capable of meeting the following test requirements. I landles are to be fully immersed in motor vehicle brake fluid (SAE J1703), gasoline, ethylene glycol, and ethyl alcohol for 15 mm at room temperature, removed, wiped off, and allowed to stand for 24 hr.