5305-00-639-8253 SCREW,MACHINE Index 5305-00-639-8256 SCREW,MACHINE

National Stock Number:
5305-00-639-8255

Federal Supply Class:
5305

National Item Identification Number:
006398255

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:
13501306KW9LUCENT TECHNOLOGIES INC DBA FEDERAL MARKETING GROUP
1350133B4M0LUCENT TECHNOLOGIES INC CORPORATE HEADQUARTERS
13501357712TELEMECHANICS INC
13501370408AT AND T CORP


Techincal Specification:
FASTENER LENGTH0.250 INCHES NOMINAL
FEATURES PROVIDEDCASEHARDENED
HEAD DIAMETER0.188 INCHES NOMINAL
HEAD HEIGHT0.375 INCHES NOMINAL
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLESLOT
NOMINAL THREAD DIAMETER0.138 INCHES
SCREW MATERIALSTEEL
SCREW SURFACE TREATMENTCOPPER
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.172 INCHES MINIMUM
THREAD QUANTITY PER INCH40
THREAD SERIES DESIGNATORUNF


Click here to Register for Free 30-day Trial