NSN 5306-00-189-6981

Part Details | EXTERNALLY RELIEVED BODY BOLT

5306-00-189-6981 An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is No. 10 (0.190 IN.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, INTERNAL WRENCHING and THUMBSCREW. See also SCREW, EXTERNALLY RELIEVED BODY.

Alternate Parts: 7552054, 755205-4, 5306-00-189-6981, 00-189-6981, 5306001896981, 001896981

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53FEB 24, 197100-189-698106675 ( BOLT, EXTERNALLY RELIEVED BODY )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5306-00-189-6981
Part Number Cage Code Manufacturer
755205-410001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
Technical Data | NSN 5306-00-189-6981
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.562 INCHES MINIMUM
FASTENER LENGTH2.500 INCHES NOMINAL
HEAD STYLE HEXAGON
HEAD HEIGHT0.250 INCHES NOMINAL
WIDTH BETWEEN FLATS0.362 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY2
FIRST DIAMETER FROM HEAD0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.188 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER0.375 INCHES NOMINAL