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		                             National Stock Number: 5306-01-059-7450
  Federal Supply Class: 5306
  National Item Identification Number: 010597450
  Description: BOLT,INTERNALLY RELIEVED BODY
  Detail: An externally threaded fastener whose external threaded portion is of one nominal diameter. It has a concentric hole along the longitudinal centerline which may extend a part or the full length of the bolt. The concentric hole along the centerline may be counterbored and/or internally threaded at the head end or the bolt end. The head is designed to be held or driven by an external and/or internal driver. For items having a hole(s) perpendicular to the axis which meet the concentric hole along the longitudinal centerline, see BOLT, FLUID PASSAGE. 
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  Manufacturer Information:
 | 7542036P1 | 99971 | LOCKHEED MARTIN CORP NAVAL ELECTRONICS & SURVEILLANCE SYSTEMS |   
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  Techincal Specification:
 | THREAD SERIES DESIGNATOR | UNC |  | NOMINAL THREAD DIAMETER | 0.138 INCHES |  | THREAD QUANTITY PER INCH | 32 |  | THREAD CLASS | 2A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 0.250 INCHES NOMINAL |  | FASTENER LENGTH | 0.850 INCHES NOMINAL |  | MATERIAL | STEEL COMP 303 OVERALL |  | SURFACE TREATMENT | PASSIVATE OVERALL |  | STYLE DESIGNATOR | CONCENTRIC HOLE UNTHREADED |  | SHOULDER DIAMETER | 0.210 INCHES NOMINAL |  | SHOULDER LENGTH | 0.600 INCHES NOMINAL |  | CONCENTRIC HOLE DEPTH | 0.250 INCHES NOMINAL |  | THREAD SERIES | UNC CONCENTRIC HOLE |  | NOMINAL THREAD SIZE | 0.138 INCHES CONCENTRIC HOLE |  | THREADS PER INCH | 32 CONCENTRIC HOLE |  | INTERNAL THREAD CLASS | 2B CONCENTRIC HOLE |  | HEAD STYLE | HEXAGON |  | HEAD HEIGHT | 0.200 INCHES NOMINAL |  | WIDTH BETWEEN FLATS | 0.250 INCHES NOMINAL |  | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |   
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