ASME B107-400:2008 pdf download

ASME B107-400:2008 pdf download.Striking Tools
1 SCOPE
This Standard provides performance and safety requirements for nail hammers that are intended specifi- cally for use in driving or pulling unhardened nails and ripping apart or tearing down wooden components. It is intended to serve as a guide in selecting, testing, and using the hand tools covered herein. It is not the purpose of this Standard to specify the details of manufacturing. This Standard is also meant to serve as a guide in developing manuals and posters and for training per- sonnel to work safely. This Standard may be used as a guide bystate authori- ties or other regulatory bodies in the formulation oflaws or regulations. It is also intended for voluntary use by establishments that use or manufacture the tools covered. The methods employed to ensure compliance with this Standard shall be determined by the proper regula- tory or administrative authority.
2 DEFINITIONS
(See Fig. 1 as applicable.) bell: the portion of the hammerhead directly behind the striking face. chamfer: the bevel or equivalent radius encircling the perimeter of the striking face. cheeks: see sides. claw: the two-pronged portion of the hammerhead directly opposite the striking face. claw bevel: when provided, the angled portion of the nail slot. equivalent: alternative designs or features that will pro- vide an equal degree of safety and performance. eye: an opening or aperture located between the claw and the striking face into which the handle is inserted, if the handle is separate. hammerhead: the portion of the hammer exclusive of the handle. handle: the portion that protrudes from the hammerhead and by which the tool is held. handle grip: material securely attached to the grip end of some styles of hammer handles. hardness: the condition of the hammerhead resulting from heat treatment.
neck: the portion of the hammerhead between the eye and the bell. safety message: the information imprinted on or affixed to the hammer that is intended to promote safety. serrations: when provided, the geometric pattern of grooves on the striking face. shall: indicates mandatory requirements of this Standard. should: indicates if a provision is of an advisory nature or is stated as a recommendation. sides (or cheeks): the outside surfaces ofthe hammerhead, on either side of the eye, located between the head and neck and the head and claw. spalling: chipping or separation of material. striking face: the portion of the hammerhead, exclusive of the neck, bell, and chamfer, located on the side of the eye opposite from the claw. striking-face crown: the convex shape or radius of the striking face. top ofhammer: the portion of the hammerhead opposite the handle entry. wedged hammer: a hammer that has the handle secured to the hammerhead by inserting a device to expand the handle within the eye.
5.2 Striking and Tensile Force
Test Prior to tensile force testing, sample hammers shall be subjected to the following striking test: (a) The hammer shall withstand 20 full swinging blows by a person of average build, 160 lb to 180 lb, or the mechanical equivalent, commensurate with the end use and weight of the hammer. (b) The test shall be conducted at room temperature. (c) The blows shall be delivered with the hammer held or fixtured at the normal gripping area. (d) The blows shall be struck against the smooth, flat, or slightly convex surface of a rigidly supported steel object that has a minimum diameter of 3 in., a minimum length of 2 in., and a hardness of 92 HRB to 105 HRB or equivalent. The hammerhead shall not permanently deform, crack, or break. Handles shall not separate from the hammerhead, crack, or break. Following the striking test, the head and handle shall not separate under the tensile force specified in para. 5.2.1 or 5.2.2 (see Fig. 2). The striking face shall not mushroom, chip, crack, or spall when subjected to the striking test.