Product Details | HEXAGON HEAD CAP SCREW

5305-00-021-3828 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: FFS85, 5305-00-021-3828, 00-021-3828, 5305000213828, 000213828

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 01 JAN 1963 00-021-3828

Drawings & Photos | NSN 5305-00-021-3828


Demand History | NSN 5305-00-021-3828

Part Number Request Date QTY Origin
FFS85 2013-01-11 473 US
FFS85 2011-10-280 95 United States
FFS85 2011-09-265 14 US
FFS85 2010-03-84 100 US
FFS85 2010-02-43 10 United States
FFS85 2009-09-272 50 US

Cross Reference | NSN 5305-00-021-3828

Part Number Cage Code Manufacturer
FFS85 81348 FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES

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Technical Data | NSN 5305-00-021-3828

Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER 0.500 INCHES
THREAD QUANTITY PER INCH 13
THREAD CLASS 2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 1.250 INCHES MINIMUM
FASTENER LENGTH 3.000 INCHES NOMINAL
MATERIAL STEEL COMP 303 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT PASSIVATE OVERALL
HARDNESS RATING 80.0 ROCKWELL B MINIMUM OVERALL
MINIMUM TENSILE STRENGTH 80000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH 30000 POUNDS PER SQUARE INCH
HEAD STYLE C1 HEXAGON
HEAD HEIGHT 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM
WIDTH BETWEEN FLATS 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM
SURFACE FINISH 125.0 MICROINCHES BEARING SURFACE OF HEAD
NONDEFINITIVE SPEC/STD DATA 2 TYPE
MANUFACTURERS CODE 81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE FFS85

Restrictions/Controls & Freight Information | NSN 5305-00-021-3828

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