ASME B107.46-2004 pdf download
ASME B107.46-2004 pdf download.Stud, Screw, and Pipe Extractors:? Safety Requirements.
1 SCOPE This Standard provides performance and safety re- quirements for handheld screw and pipe extractors that are intended specifically for removing broken screws, pipes, bolts, studs, and fittings from threaded openings. It is intended to cover only those designs that require striking of the extractor to seat it properly in the broken pipe or fastener being removed. This Standard, there- fore, does not cover designs that do not require striking, such as the ground thread extractor. The Standard is intended to serve as a guide in select- ing, testing, and using the hand tools covered. It is not the purpose of this Standard to specify the details of manufacturing. The Standard is also meant to serve as a guide in developing manuals and posters for training personnel in safe practices. This Standard may be used as a guide bystate authori- ties or other regulatory bodies in the formulation oflaws or regulations. 2 CLASSIFICATION Various typical styles of extractors and their usages are listed here and shown in Figs. 1 through 4. The names given in this Standard are those generally recog- nized. The styles covered by the Standard are notlimited to those listed or illustrated. Type I: Multi-Spline Extractor Type II: Spiral Flute Extractor Type III: Straight Flute Extractor Type IV: Tapered Flute Extractor 3 REFERENCES The following documents are referenced in this Stan- dard. At the time of publication, the editions indicated for dated references were valid. All standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investi- gate the possibility of applying the most recent edition of the documents indicated below. If a date is not speci- fied, the latest edition shall be used. ANSI Z87.1, Practice for Occupational and Educational Eye and Face Protection ANSI Z535.4, Product Safety Signs and Labels 1 Publisher: American National Standards Institute (ANSI), 11 West 42nd Street, New York, NY 10036 ASTM E 18, Standard Test Methods for Rockwell Hard- ness and Rockwell Superficial Hardness of Metallic Materials Publisher: American Society for Testing and Materials, (ASTM), 100 Barr Harbor Drive, West Conshohocken, PA 19428 Guide to Hand Tools — Selection, Safety Tips, Proper Use and Care Publisher: Hand Tools Institute (HTI), 25 North Broad- way, Tarrytown, NY 10591 4 DEFINITIONS body: the portion of the extractor exclusive of the taper and/or flutes. chamfer: the angled flat surface or equivalent radius be- tween the struck face and the body of the extractor encircling the perimeter of the struck face. cutting edge: the edge formed by the flute. equivalent: the word equivalent in this Standard shall be interpreted to mean alternative designs or features that will provide an equal degree of safety. flute: the straight or spiral groove that forms the cutting edge of the extractor. hardness: the condition of the extractor resulting from heat treatment. rounded head: an equivalent design for the struck face and chamfer portion of the extractor. safety message: the information imprinted on or affixed to the extractor that is intended to promote safety. shall and should: mandatory requirements of this Stan- dard are characterized by the word shall. If a provision is of an advisory nature, it is indicated by the word should or is stated as a recommendation. struck face: the portion of the extractor, directly opposite the fluted or tapered end. taper: the portion of the extractor, when provided, oppo- site the struck face with a gradually reducing cross- sectional area.
5.1.5 Extractors shall be free of nonfunctional sharp edges, points, and surface roughness that could inflict personal injury on the user when handling the tool. Extractors shall be free of manufacturing defects such as seams, laps, pipes, and cold shuts that would jeopardize sound construction, and shall withstand the tests speci- fied in section 6. 5.2 Materials The materials used in the manufacture of extractors shall be such as to produce tools conforming to this Standard. 5.3 Mechanical Properties Hardness of the cutting edges shall be 45 HRC to 60 HRC or equivalent. Hardness of the struck face of the extractor shall not exceed 43 HRC or equivalent. 6 TESTS Many tests required herein are inherently hazardous; adequate safeguards for personnel and property shall be employed in conducting such tests. Separate (new) samples shall be used in each of these tests. Failure to pass any one of the tests indicates the extractors are not in compliance with this Standard.
