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.
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. 3 REFERENCES The following is a list of publications referenced in this Standard. The latest available editions shall be used. ANSI Z87.1-1989 (R1998), Practice for Occupational and Educational Eye and Face Protection(includes supple- ment and partial revision ANSI Z87.1A-1991) ANSI Z535.4-1998, Product Safety Signs and Labels Publisher: American National Standards Institute (ANSI), 25 West 43rd Street, New York, NY 10036 ASTM E 18-00, Test Methods for Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials ASTM F 1667-1995, Standard Specification for Driven Fasteners: Nails, Spikes, and Staples
4 PERFORMANCE REQUIREMENTS 4.1 Design Nail hammers shall have a striking face on one end of the hammerhead for use in driving unhardened nails and a claw on the opposite end for use in pulling both headed and headless unhardened nails, or ripping apart or tearing down wooden components. 4.1.1 The striking face shall have a smooth or serrated convex shape. NOTE: Hammers withserrations onthestrikingfaceareintended for driving unhardened nails. The serrated face reduces the inci- dence of bending or dislodging of nails. 4.1.2 The striking face shall have a chamfer of approximately 45 deg (or equivalent radius) around the perimeter with a width approximately equal to one- tenth of the diameter of the bell, as measured across the chamfer angle or the lesserchamferwidthforbell shapes other than circular (see Fig. 1). For example, if the bell diameter equals 1.0 in., then the chamfer width equals approximately 0.1 in. 4.1.3 Hammers shall pass the tests specified in section 5. 4.1.4 The head and handle shall be free ofnonfunc- tional sharp edges, points, and surface roughness that could inflict personal injury on the user when handling the hammer. 4.2 Materials The materials used in the manufacture of hammers shall be such as to produce hammers conforming to the requirements specified herein. 4.3 Mechanical Properties (a) The striking face shall be hardened and tempered to 45 HRC to 60 HRC. (b) Hammer claws shall be hardened to 40 HRC to 55 HRC for a minimum distance of 0.75 in. from the tip end.