Product Details | SOCKET HEAD CAP SCREW

5305-00-299-7721 An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.

Part Alternates: MS3545535, MS35455-35, FFS86, 5305-00-299-7721, 00-299-7721, 5305002997721, 002997721

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 03 OCT 1973 00-299-7721

Drawings & Photos | NSN 5305-00-299-7721


Demand History | NSN 5305-00-299-7721

Part Number Request Date QTY Origin
FFS86 2022-05-143 40 United States
FFS86 2021-12-347 40 US
FFS86 2013-08-229 80 Canada
FFS86 2012-03-74 2 US
FFS86 2011-08-222 50 US
FFS86 2011-08-214 50 US
FFS86 2011-03-61 8 US
FFS86 2011-03-60 5000 US

Cross Reference | NSN 5305-00-299-7721

Part Number Cage Code Manufacturer
FFS86 81348 FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES
MS35455-35 96906 MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS

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Technical Data | NSN 5305-00-299-7721

Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER 0.250 INCHES
THREAD QUANTITY PER INCH 20
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.740 INCHES MINIMUM AND 0.770 INCHES MAXIMUM
FASTENER LENGTH 0.740 INCHES MINIMUM AND 0.770 INCHES MAXIMUM
MATERIAL STEEL COMP 4145H OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION FED STD 66,AISI/SAE 4145 FED STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH 130000 POUNDS PER SQUARE INCH
HEAD STYLE C49 FLAT CHAMFER
HEAD DIAMETER 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
HEAD HEIGHT 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
INTERNAL DRIVE STYLE D5 HEXAGON
WIDTH ACROSS FLATS 0.187 INCHES NOMINAL
NONDEFINITIVE SPEC/STD DATA 1 TYPE
DEPARTURE FROM CITED DOCUMENT AS MODIFIED BY REVISION B
MANUFACTURERS CODE 81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE FFS86
MANUFACTURERS CODE 96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE MS35455-35

Restrictions/Controls & Freight Information | NSN 5305-00-299-7721

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