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National Stock Number:
5305-01-352-3205
Federal Supply Class:
5305
National Item Identification Number:
013523205
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:
| 16990-8C-28 | 56878 | SPS TECHNOLOGIES, LLC |
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Techincal Specification:
| COLOR | BLACK | | COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.375 INCHES NOMINAL | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM | | HEAD DIAMETER | 0.872 INCHES MINIMUM AND 0.937 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A535 ASSN STD SINGLE MATERIAL RESPONSE | | SCREW MATERIAL | STEEL | | SCREW SURFACE TREATMENT | OXIDE | | WIDTH BETWEEN FLATS | 0.312 INCHES NOMINAL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.596 INCHES MINIMUM AND 1.750 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNRC | | THREAD QUANTITY PER INCH | 13 |
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