Product Details | MACHINE BOLT

5306-01-304-2708 An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.

Part Alternates: NAS565C37, 5306-01-304-2708, 01-304-2708, 5306013042708, 013042708

Hardware and Abrasives | Bolts

Supply Group (FSG) NSN Assign. NIIN
53 14 JUL 1989 01-304-2708

Drawings & Photos | NSN 5306-01-304-2708


Demand History | NSN 5306-01-304-2708

Part Number Request Date QTY Origin
NAS565C37 2025-12-335 150 United States
NAS565C37 2025-01-08 350 US

Cross Reference | NSN 5306-01-304-2708

Part Number Cage Code Manufacturer
NAS565C37 80205 NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES

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Technical Data | NSN 5306-01-304-2708

Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER 0.312 INCHES
THREAD QUANTITY PER INCH 24
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 1.721 INCHES MINIMUM AND 1.751 INCHES MAXIMUM
FASTENER LENGTH 1.765 INCHES MINIMUM AND 1.812 INCHES MAXIMUM
MATERIAL IRON ALLOY 660 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
HEAD STYLE C1 HEXAGON
HEAD HEIGHT 0.281 INCHES NOMINAL
WIDTH BETWEEN FLATS 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM
HOLE CONFIGURATION STYLE E4 HEXAGON CORNERS
HOLE TYPE DRILLED
HOLE QUANTITY 3
HOLE DIAMETER 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM
FEATURES PROVIDED FINISHED HEAD
SPECIFICATION/STANDARD DATA 80205-NAS565 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD

Restrictions/Controls & Freight Information | NSN 5306-01-304-2708

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information