Product Details | MACHINE BOLT

5306-00-685-2731 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: 2356374-20, 5306-00-685-2731, 00-685-2731, 5306006852731, 235637420, 006852731

Hardware and Abrasives | Bolts

Supply Group (FSG) NSN Assign. NIIN
53 01 JAN 1963 00-685-2731

Drawings & Photos | NSN 5306-00-685-2731


Cross Reference | NSN 5306-00-685-2731

Part Number Cage Code Manufacturer
2356374-20 18355 BOEING COMPANY, THE DBA BOEING
2356374-20 88277 BOEING COMPANY, THE DBA BOEING

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Technical Data | NSN 5306-00-685-2731

Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER 0.250 INCHES
THREAD QUANTITY PER INCH 28
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.469 INCHES MINIMUM
FASTENER LENGTH 2.031 INCHES NOMINAL
MATERIAL STEEL COMP 8740 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLE C1 HEXAGON
HEAD HEIGHT 0.156 INCHES NOMINAL
WIDTH BETWEEN FLATS 0.440 INCHES NOMINAL
GRIP LENGTH 1.562 INCHES NOMINAL
FEATURES PROVIDED FINISHED HEAD
MANUFACTURERS CODE 88277
DESIGN CONTROL REFERENCE 2356374-20

Restrictions/Controls & Freight Information | NSN 5306-00-685-2731

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