Product Details | HEXAGON HEAD CAP SCREW

5305-00-655-6278 An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes BOLT,MACHINE; BOLT,EXTERNALLY RELIEVED BODY; BOLT,INTERNAL WRENCHING; and SCREW,CAP,SOCKET HEAD.

Part Alternates: FFS92, 180143, 5305-00-655-6278, 00-655-6278, 5305006556278, 006556278

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 01 JAN 1963 00-655-6278

Drawings & Photos | NSN 5305-00-655-6278


Demand History | NSN 5305-00-655-6278

Part Number Request Date QTY Origin
FFS92 2023-08-236 14 US
FFS92 2011-02-49 5 US
FFS92 2011-02-49 50 US
FFS92 2010-11-323 165 US
FFS92 2009-12-338 100 US
FFS92 2009-10-292 50 United States
FFS92 2008-03-80 50 United States

Cross Reference | NSN 5305-00-655-6278

Part Number Cage Code Manufacturer
180143 24617 GENERAL MOTORS CORP
FFS92 81348 FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES

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Technical Data | NSN 5305-00-655-6278

Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER 0.438 INCHES
THREAD QUANTITY PER INCH 14
THREAD CLASS 2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.750 INCHES NOMINAL
FASTENER LENGTH 0.750 INCHES NOMINAL
MATERIAL STEEL OVERALL
SURFACE TREATMENT CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL
HARDNESS RATING 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH 120000 POUNDS PER SQUARE INCH
HEAD STYLE C1 HEXAGON
HEAD HEIGHT 0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM
WIDTH BETWEEN FLATS 0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
NONDEFINITIVE SPEC/STD DATA 10P STYLE AND 2 TYPE
MANUFACTURERS CODE 81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE FFS92

Restrictions/Controls & Freight Information | NSN 5305-00-655-6278

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
NMF Description 093486 BOLTS,NUTS OR SCREWS, NOI (SUB 3)
Less than car load rating U 50
Less than truck load rating W Rating Variable
Water commodity Code 713 unknown
Originating Activity Code XX
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable