5305-00-638-3880 SCREW,MACHINE Index 5305-00-638-3890 SCREW,MACHINE

National Stock Number:
5305-00-638-3881

Federal Supply Class:
5305

National Item Identification Number:
006383881

Description:
SCREW,MACHINE

Detail:
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.


Manufacturer Information:
207-1005-33B150RAYTHEON COMPANY
207-1005-349956RAYTHEON COMPANY
207-1005P33B150RAYTHEON COMPANY
207-1005PT33B150RAYTHEON COMPANY
207-1005PT349956RAYTHEON COMPANY
207-1005P349956RAYTHEON COMPANY


Techincal Specification:
FASTENER LENGTH0.250 INCHES NOMINAL
HEAD DIAMETER0.171 INCHES MINIMUM AND 0.181 INCHES MAXIMUM
HEAD HEIGHT0.046 INCHES NOMINAL
HEAD STYLEBINDING
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
NOMINAL THREAD DIAMETER0.086 INCHES
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC ALL MATERIAL RESPONSES
SCREW MATERIALSTEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305
SCREW SURFACE TREATMENTPASSIVATE
THREAD QUANTITY PER INCH56
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A
THREAD LENGTH0.250 INCHES MAXIMUM


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