5305-00-890-7988 SCREW,EXTERNALLY RELIEVED BODY Index 5305-00-890-7992 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-00-890-7991

Federal Supply Class:
5305

National Item Identification Number:
008907991

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:
R7123-0126687TELEDYNE BROWN ENGINEERING, INC.
R7123-0198571TELEDYNE CONTROLS, LLC


Techincal Specification:
FASTENER LENGTH0.255 INCHES NOMINAL
HEAD HEIGHT0.080 INCHES NOMINAL
HEAD STYLESQUARE
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
NOMINAL THREAD DIAMETER0.086 INCHES
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE
SCREW MATERIALCOPPER ALLOY
SCREW SURFACE TREATMENTGOLD
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-G-45204,TYPE 1,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE
THREAD LENGTH0.100 INCHES MINIMUM AND 0.160 INCHES MAXIMUM
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH56
WIDTH BETWEEN FLATS0.187 INCHES NOMINAL


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