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National Stock Number:
5305-00-217-1971
Federal Supply Class:
5305
National Item Identification Number:
002171971
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.
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Manufacturer Information:
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Techincal Specification:
| FASTENER LENGTH | 0.218 INCHES NOMINAL | | HEAD HEIGHT | 0.037 INCHES MINIMUM AND 0.043 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | | NOMINAL THREAD DIAMETER | 0.086 INCHES | | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE | | SCREW MATERIAL | STEEL COMP 416 | | SPECIAL FEATURES | SHARP POINTED CONE CENTERED ON TOP OF HEAD 3/64 IN. DIA. AT BASE OF CONE AND 3/64 IN. HG. OF CONE,RELIEF UNDER HEAD 0.068 PLUS 0.000 MIN. 0.003 IN. DIA. AND 0.020 PROM 0.003 IN. LG | | WIDTH BETWEEN FLATS | 0.125 INCHES MAXIMUM | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.218 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 64 | | THREAD SERIES DESIGNATOR | UNF |
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