Product Details | MACHINE BOLT

5306-00-388-6141 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: 733081PC5, 5306-00-388-6141, 00-388-6141, 5306003886141, 003886141

Hardware and Abrasives | Bolts

Supply Group (FSG) NSN Assign. NIIN
53 00-388-6141

Drawings & Photos | NSN 5306-00-388-6141


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Technical Data | NSN 5306-00-388-6141

Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER 0.375 INCHES
THREAD QUANTITY PER INCH 16
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.688 INCHES MINIMUM
FASTENER LENGTH 2.875 INCHES NOMINAL
MATERIAL STEEL COMP 1137 OR STEEL COMP 1141 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION QQ-S-637 FED SPEC ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENT PHOSPHATE ZINC OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-C-16232 TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLE C1 HEXAGON
HEAD HEIGHT 0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM
WIDTH BETWEEN FLATS 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM
FEATURES PROVIDED FINISHED HEAD
SPECIAL FEATURES BODY GROUND TO 0.3759 IN. MIN 0.3761 IN. MAX DIA,AND 0.062 IN. W BY 0.343 IN. DIA RELIEF CUT UNDER HEAD TO ALLOW FOR GRINDING

Restrictions/Controls & Freight Information | NSN 5306-00-388-6141

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
Category Code Description
No Freight Information