NSN 5305-00-185-0258

Part Details | MACHINE SCREW

5305-00-185-0258 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: N81P13007C, N81P13007C, 5305-00-185-0258, 00-185-0258, 5305001850258, 001850258

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53MAR 02, 197300-185-025806657 ( SCREW, MACHINE )
REFERENCE DRAWINGS & PICTURES

UNDERCUT HEXAGON

CROSS RECESS TYPE 1

Cross Reference | NSN 5305-00-185-0258
Part Number Cage Code Manufacturer
N81P13007C09172GENERAL ELECTRIC COMATERIALS INFORMATION SERVICES
N81P13007C99971LOCKHEED MARTIN CORPNAVAL ELECTRONICS & SURVEILLANCE
Technical Data | NSN 5305-00-185-0258
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.138 INCHES
THREAD QUANTITY PER INCH32
THREAD CLASS2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.345 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
FASTENER LENGTH0.407 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
SCREW MATERIAL COPPER ALLOY
SCREW SURFACE TREATMENT CADMIUM
HEAD STYLE3 UNDERCUT HEXAGON
HEAD DIAMETER0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
HEAD HEIGHT0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM
INTERNAL DRIVE STYLE CROSS RECESS TYPE 1