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National Stock Number:
5305-00-520-7681
Federal Supply Class:
5305
National Item Identification Number:
005207681
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:
| 5207681 | 19206 | ARMY, UNITED STATES DEPARTMENT OF THE BUSINESS DEVELOPMENT DBA WATERVLIET ARSENAL |
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Techincal Specification:
| COUNTERSINK ANGLE | 80.0 DEGREES NOMINAL | | FASTENER LENGTH | 0.510 INCHES MINIMUM AND 0.520 INCHES MAXIMUM | | HEAD DIAMETER | 0.595 INCHES MINIMUM AND 0.605 INCHES MAXIMUM | | HEAD HEIGHT | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK UNDERCUT | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | | NOMINAL THREAD DIAMETER | 0.438 INCHES | | SPECIAL FEATURES | 0.062 IN. LG THD RELIEF UNDER HEAD,0.367 IN. MIN AND 0.369 IN. MAX DIA BY 0.240 IN. LG PILOT LOCATED BELOW THDED PORTION | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 0.218 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNF |
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