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		                             National Stock Number: 5305-01-307-6236
  Federal Supply Class: 5305
  National Item Identification Number: 013076236
  Description: THUMBSCREW
  Detail: An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use SCREW (as modified) or BOLT (as modified). 
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  Manufacturer Information:
 | 6196071 | 53711 | NAVAL SEA SYSTEMS COMMAND |   
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  Techincal Specification:
 | THREAD SERIES DESIGNATOR | UNC |  | NOMINAL THREAD DIAMETER | 0.250 INCHES |  | THREAD QUANTITY PER INCH | 20 |  | THREAD CLASS | 2A |  | THREAD LENGTH | 0.390 INCHES NOMINAL |  | FASTENER LENGTH | 0.410 INCHES NOMINAL |  | MATERIAL | COPPER ALLOY 464 OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM B21-83,UNS C46400 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |  | COLOR | BLACK OVERALL |  | HEAD STYLE | KNURLED NO. 2 |  | HEAD DIAMETER | 0.880 INCHES NOMINAL |  | HEAD HEIGHT | 0.310 INCHES NOMINAL |  | POINT STYLE | FLAT |  | SHOULDER SHAPE | ROUND FIRST SHOULDER |  | SHOULDER DIAMETER | 0.500 INCHES NOMINAL FIRST SHOULDER |  | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |  | SPECIAL FEATURES | EXPLOSIVE ORDNANCE DISPOSAL TOOLS/EQUIPMENT |  | CRITICALITY CODE JUSTIFICATION | FEAT |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 53711 |  | DESIGN CONTROL REFERENCE | 6196071 |   
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