Product Details | HEXAGON HEAD CAP SCREW

5305-00-021-4171 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: 214171, 5305-00-021-4171, 00-021-4171, 5305000214171, 000214171

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 01-JAN-60 00-021-4171

Drawings & Photos | NSN 5305-00-021-4171


Cross Reference | NSN 5305-00-021-4171

Part Number Cage Code Manufacturer
214171 7X677 GENERAL MOTORS LLC DBA GENERAL MOTORS
5350071042050 SCY13 E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES
MS90726-99 80205 NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES
MS90726-99 96906 MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS

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Technical Data | NSN 5305-00-021-4171

Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER 0.438 INCHES
THREAD QUANTITY PER INCH 20
THREAD CLASS 2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 1.125 INCHES MINIMUM
FASTENER LENGTH 4.000 INCHES NOMINAL
MATERIAL STEEL OVERALL
SURFACE TREATMENT CADMIUM OVERALL
HEAD STYLE C1 HEXAGON
HEAD HEIGHT 0.328 INCHES NOMINAL
WIDTH BETWEEN FLATS 0.625 INCHES NOMINAL

Restrictions/Controls & Freight Information | NSN 5305-00-021-4171

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