NSN 5305-00-177-5321

Part Details | SOCKET HEAD CAP SCREW

5305-00-177-5321 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.

Alternate Parts: 400277087, 4-00277-087, FFS86E, FF-S-86E, 122084, 12208-4, NAS1352C4LN28, NK60CR42028E, NK60CR420-28E, TN1352C4LN28, 5305-00-177-5321, 00-177-5321, 5305001775321, 001775321

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53MAY 13, 197000-177-532116282 ( SCREW, CAP, SOCKET HEAD )
REFERENCE DRAWINGS & PICTURES

CROWNED HEXAGON

HEXAGON

Cross Reference | NSN 5305-00-177-5321
Part Number Cage Code Manufacturer
4-00277-08703848ARMA DIVAMBAC INDUSTRIES INC
FF-S-86E81348FEDERAL SPECIFICATIONSPROMULGATED BY GENERAL SERVICES
12208-420263MKT GEOTECHNICAL SYSTEMS
NAS1352C4LN2880205NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES
NK60CR420-28E26233NYLOK CORPORATIONDBA NYLOK WESTERN FASTENER
TN1352C4LN2826304TORKON FASTENER CORP
Technical Data | NSN 5305-00-177-5321
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH1.000 INCHES MINIMUM
FASTENER LENGTH1.734 INCHES MINIMUM AND 1.781 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH80000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH30000 POUNDS PER SQUARE INCH
HEAD STYLE9 CROWNED HEXAGON
HEAD DIAMETER0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
HEAD HEIGHT0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
INTERNAL DRIVE STYLE HEXAGON
WIDTH ACROSS FLATS0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM
SPECIFICATION/STANDARD DATA80205-NAS1352 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD