5310-01-308-8120 NUT,SELF-LOCKING,HEXAGON Index 5305-01-308-8122 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-308-8121

Federal Supply Class:
5305

National Item Identification Number:
013088121

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:
2522 004 080310SXW1CHART INC. - PROCESS SYSTEMS DIVISION


Techincal Specification:
EXTERNAL THREAD TOLERANCE CLASS6G
FASTENER LENGTH20.0 MILLIMETERS NOMINAL
HEAD HEIGHT2.0 MILLIMETERS NOMINAL
HEAD DIAMETER5.5 MILLIMETERS NOMINAL
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLESLOT
NOMINAL THREAD DIAMETER3.0 MILLIMETERS
SCREW MATERIALCOPPER AND ZINC ALLOY
SCREW SURFACE TREATMENTNICKEL
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH19.0 MILLIMETERS MINIMUM AND 20.0 MILLIMETERS MAXIMUM
THREAD PITCH IN MILLIMETERS0.5
THREAD SERIES DESIGNATORM


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