5306-00-789-4378 BOLT,INTERNALLY RELIEVED BODY Index 5306-00-789-4380 BOLT,SHOULDER

National Stock Number:
5306-00-789-4379

Federal Supply Class:
5306

National Item Identification Number:
007894379

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:
756101-10398897LOCKHEED MARTIN CORP


Techincal Specification:
CONCENTRIC HOLE DIAMETER0.625 INCHES NOMINAL
COUNTERBORE DIAMETER0.900 INCHES NOMINAL
COUNTERBORE DEPTH3.370 INCHES MINIMUM AND 3.400 INCHES MAXIMUM
FASTENER LENGTH4.010 INCHES MINIMUM AND 4.040 INCHES MAXIMUM
HEAD DIAMETER2.200 INCHES NOMINAL
HEAD HEIGHT0.330 INCHES NOMINAL
HEAD STYLEROUND W/WRENCH FLATS CHAMFERED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP E4340 OVERALL
NOMINAL THREAD DIAMETER1.500 INCHES
SHOULDER DIAMETER1.748 INCHES MINIMUM AND 1.749 INCHES MAXIMUM
SHOULDER LENGTH0.300 INCHES NOMINAL
SPECIAL FEATURESDRILL 0.167 TO 0.175 IN. DIA HOLE 3.765 IN. FROM BEARING SURFACE OF HEAD THRU 0.625 IN. DIA HOLE
WIDTH BETWEEN FLATS1.980 INCHES MINIMUM AND 2.020 INCHES MAXIMUM
STYLE DESIGNATORCONCENTRIC HOLE UNTHREADED
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.810 INCHES MINIMUM AND 1.040 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH12


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