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National Stock Number:
5305-01-531-0538
Federal Supply Class:
5305
National Item Identification Number:
015310538
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:
| NASM51959-46 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
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Techincal Specification:
| COLOR | NATURAL | | COUNTERSINK ANGLE | 81.0 DEGREES NOMINAL | | FASTENER LENGTH | 0.625 INCHES NOMINAL | | HEAD DIAMETER | 0.319 INCHES NOMINAL | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE III | | MINIMUM TENSILE STRENGTH | 1 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.147 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | UNC-2A, CORROSION RESISTANT STEEL, CROSS-RECESSED, 82 DEGREE FLAT COUNTERSUNK HEAD MACHINE SCREW | | SCREW MATERIAL | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 384 OR STEEL COMP XM-7 | | SCREW SURFACE TREATMENT | PASSIVATE | | SPECIAL FEATURES | DRIVER SIZE 2 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.525 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNC |
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