NSN 5306-01-381-1643

Part Details | INTERNALLY RELIEVED BODY BOLT

5306-01-381-1643 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.

Alternate Parts: 17P6W8247509, 17P6W8247-509, 5306-01-381-1643, 01-381-1643, 5306013811643, 013811643

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53OCT 11, 199301-381-164306676 ( BOLT, INTERNALLY RELIEVED BODY )
REFERENCE DRAWINGS & PICTURES

HEXAGON

COUNTERBORE UNTHREADED

Cross Reference | NSN 5306-01-381-1643
Part Number Cage Code Manufacturer
17P6W8247-50988277BOEING COMPANY, THEDBA BOEING
Technical Data | NSN 5306-01-381-1643
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.630 INCHES MINIMUM AND 0.665 INCHES MAXIMUM
FASTENER LENGTH2.308 INCHES MINIMUM AND 2.438 INCHES MAXIMUM
STYLE DESIGNATORA COUNTERBORE UNTHREADED
SHOULDER DIAMETER0.7477 INCHES MINIMUM AND 0.7487 INCHES MAXIMUM
SHOULDER LENGTH1.526 INCHES MINIMUM AND 1.536 INCHES MAXIMUM
CONCENTRIC HOLE DEPTH1.901 INCHES MINIMUM AND 1.926 INCHES MAXIMUM
CONCENTRIC HOLE DIAMETER0.107 INCHES MINIMUM AND 0.114 INCHES MAXIMUM
HEAD STYLE HEXAGON
HEAD HEIGHT0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM
WIDTH BETWEEN FLATS1.052 INCHES MINIMUM AND 1.064 INCHES MAXIMUM
SPECIAL FEATURESSECOND HOLE IN THDS 90 DEGREED APART; 32 MICRO INCH FINISH ON SHOULDER AND THRD RELIEF