NSN 5306-01-256-6828

Part Details | EXTERNALLY RELIEVED BODY BOLT

5306-01-256-6828 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: 2090763453, 209-076-345-3, 5306-01-256-6828, 01-256-6828, 5306012566828, 012566828

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JUN 08, 198701-256-682806675 ( BOLT, EXTERNALLY RELIEVED BODY )
REFERENCE DRAWINGS & PICTURES

UNDERCUT HEXAGON

Cross Reference | NSN 5306-01-256-6828
Part Number Cage Code Manufacturer
209-076-345-397499BELL HELICOPTER TEXTRON INC.DBA BELL HELICOPTER
Technical Data | NSN 5306-01-256-6828
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.375 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.165 INCHES MINIMUM AND 0.205 INCHES MAXIMUM
FASTENER LENGTH1.810 INCHES MINIMUM AND 1.840 INCHES MAXIMUM
HEAD STYLE UNDERCUT HEXAGON
HEAD HEIGHT0.188 INCHES NOMINAL
WIDTH BETWEEN FLATS0.750 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY2
FIRST DIAMETER FROM HEAD0.438 INCHES NOMINAL
SECOND DIAMETER FROM HEAD0.397 INCHES MINIMUM AND 0.399 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.935 INCHES MINIMUM AND 0.945 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER0.438 INCHES NOMINAL
SPECIAL FEATURESORGANIC FINISH ON SHANK,S2 TY 1 PER BPS 4310