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National Stock Number:
5305-00-260-8152
Federal Supply Class:
5305
National Item Identification Number:
002608152
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:
| 2680889-10 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | | M40FS428H8E | 03038 | LONG-LOK, LLC |
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Techincal Specification:
| THREAD DIRECTION | RIGHT-HAND | | LOCKING FEATURE | PELLET | | THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SCREW MATERIAL | STEEL | | HEAD STYLE | FLAT COUNTERSUNK | | FASTENER LENGTH | 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.156 INCHES MINIMUM AND 0.159 INCHES MAXIMUM | | THREAD LENGTH | 0.283 INCHES MINIMUM AND 0.384 INCHES MAXIMUM | | COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM | | SCREW SURFACE TREATMENT | PHOSPHATE | | SPECIAL FEATURES | AS DIFFERENTIATED BY SPECIAL TEST FEATURES | | HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM | | THREAD QUANTITY PER INCH | 28 | | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | MIL-P-16232,TY M,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE | | THREAD CLASS | 2A |
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