NSN 5305-00-042-1240

Part Details | MACHINE SCREW

5305-00-042-1240 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: MS3525088, MS35250-88, 5305-00-042-1240, 00-042-1240, 5305000421240, 000421240

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JAN 01, 196300-042-124006657 ( SCREW, MACHINE )
REFERENCE DRAWINGS & PICTURES

CROWNED HEXAGON

CROSS RECESS TYPE 1

Cross Reference | NSN 5305-00-042-1240
Part Number Cage Code Manufacturer
MS35250-8896906MILITARY STANDARDSPROMULGATED BY MILITARY DEPARTMENTS
Technical Data | NSN 5305-00-042-1240
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.329 INCHES MINIMUM AND 0.351 INCHES MAXIMUM
FASTENER LENGTH0.437 INCHES NOMINAL
SCREW MATERIAL STEEL CORROSION RESISTING
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE
SCREW SURFACE TREATMENT PASSIVATE
HEAD STYLE0 CROWNED HEXAGON
HEAD DIAMETER0.462 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
HEAD HEIGHT0.086 INCHES MINIMUM AND 0.108 INCHES MAXIMUM
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE0 CROSS RECESS TYPE 1