NSN 5305-00-017-5257

Part Details | MACHINE SCREW

5305-00-017-5257 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: 175257, 175257, 175257, 5305-00-017-5257, 00-017-5257, 5305000175257, 000175257

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JAN 01, 196300-017-525706657 ( SCREW, MACHINE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

CROSS RECESS TYPE 1

Cross Reference | NSN 5305-00-017-5257
Part Number Cage Code Manufacturer
17525721450ARMY WEAPONS COMMANDATTN AMSWE-REE-S
17525724617GENERAL MOTORS CORP
1752577X677GENERAL MOTORS LLCDBA GENERAL MOTORS
Technical Data | NSN 5305-00-017-5257
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.438 INCHES
THREAD QUANTITY PER INCH14
THREAD CLASS2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH1.250 INCHES MAXIMUM
FASTENER LENGTH1.250 INCHES NOMINAL
SCREW MATERIAL STEEL
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONSAE GR 1 OR 2 ASSN STD SINGLE MATERIAL RESPONSE
HARDNESS RATING95.5 ROCKWELL B MINIMUM AND 100.0 ROCKWELL B MAXIMUM
MINIMUM TENSILE STRENGTH55000 POUNDS PER SQUARE INCH
HEAD STYLE HEXAGON
HEAD HEIGHT0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
INTERNAL DRIVE STYLE CROSS RECESS TYPE 1