5306-00-935-2989 BOLT,INTERNAL WRENCHING Index 5305-00-935-2991 SCREW,MACHINE

National Stock Number:
5306-00-935-2990

Federal Supply Class:
5306

National Item Identification Number:
009352990

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.


Manufacturer Information:
215-78400-280378TRIUMPH AEROSTRUCTURES, LLC


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER1.800 INCHES NOMINAL FIRST HOLE
CONCENTRIC HOLE DEPTH1.530 INCHES MINIMUM AND 1.560 INCHES MAXIMUM
CONCENTRIC HOLE DIAMETER0.250 INCHES NOMINAL
FASTENER LENGTH1.910 INCHES MINIMUM AND 1.950 INCHES MAXIMUM
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.875 INCHES NOMINAL
HEAD HEIGHT0.190 INCHES NOMINAL
HEAD STYLEROUND W/WRENCH FLATS
MATERIALSTEEL COMP 4340 OVERALL
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.375 INCHES
SHANK UNTHREADED HOLE DIAMETER0.106 INCHES NOMINAL FIRST HOLE
WIDTH BETWEEN FLATS0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM
STYLE DESIGNATORCONCENTRIC HOLE UNTHREADED
SURFACE TREATMENTCHROMIUM GRIP
SURFACE TREATMENTCADMIUM HEAD
SURFACE TREATMENTCADMIUM THREADS
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.285 INCHES MINIMUM
THREAD QUANTITY PER INCH24
THREAD SERIES DESIGNATORUNF


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