NSN 5305-01-064-7221

Part Details | MACHINE SCREW

5305-01-064-7221 An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; and SCREW, CAP SOCKET HEAD.

Alternate Parts: R1057P8, R1057P7, 5305-01-064-7221, 01-064-7221, 5305010647221, 010647221

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53AUG 31, 197801-064-722106657 ( SCREW, MACHINE )
REFERENCE DRAWINGS & PICTURES

DOUBLE HEXAGON W/ HOLE

CROSS RECESS TYPE 1

Cross Reference | NSN 5305-01-064-7221
Part Number Cage Code Manufacturer
R1057P899207GENERAL ELECTRIC COMPANYDBA GE
R1057P799207GENERAL ELECTRIC COMPANYDBA GE
Technical Data | NSN 5305-01-064-7221
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.164 INCHES
THREAD QUANTITY PER INCH32
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.553 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
FASTENER LENGTH0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
SCREW MATERIAL STEEL
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
HEAD STYLE DOUBLE HEXAGON W/ HOLE
HEAD HEIGHT0.250 INCHES NOMINAL
WIDTH BETWEEN FLATS0.212 INCHES MINIMUM AND 0.220 INCHES MAXIMUM
EXTENDED WASHER DIAMETER0.312 INCHES NOMINAL
EXTENDED WASHER THICKNESS0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM
INTERNAL DRIVE STYLE CROSS RECESS TYPE 1