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		                             National Stock Number: 5136-01-337-8981
  Federal Supply Class: 5136
  National Item Identification Number: 013378981
  Description: TAP,THREAD CUTTING
  Detail: An internal threading tool with longitudinally separated cutting edges designed to form specific threads. 
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  Manufacturer Information:
 | 11901 | 92061 | BENDIX CORP THE INDUSTRIAL TOOLS DIV SOUTH BELOIT PLANT |  | B94.9 | 05047 | THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS |  | B94.9 1/4-28 UNF HS C H3 | 80244 | GENERAL SERVICES ADMINISTRATION FEDERAL SUPPLY SERVICE |   
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  Techincal Specification:
 | DEPARTURE FROM CITED DESIGNATOR | MODIFIED BY THREAD PITCH DIAMETERS |  | FLUTE QUANTITY | 3 |  | LENGTH | 0.312 INCHES NOMINAL SQUARE END |  | MATERIAL | STEEL OVERALL |  | OVERALL LENGTH | 2.500 INCHES NOMINAL |  | SHANK DIAMETER | 0.318 INCHES MINIMUM |  | SPECIFICATION/STANDARD DATA | 05047-ASME B94.9 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |  | STARTING CHAMFER TYPE | PLUG |  | STYLE DESIGNATOR | SPIRAL FLUTE |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD FORMING METHOD | CUT |  | THREAD LENGTH | 1.130 INCHES MINIMUM |  | THREAD PITCH DIAMETERS | +0.2273 TO 0.2288 INCHES |  | THREAD SIZE AND SERIES/TYPE DESIGNATOR | 0.250-28 UNF |  | THREAD STRUCTURE | REGULAR |  | WIDTH ACROSS FLATS | 0.191 INCHES NOMINAL |   
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