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National Stock Number: 5305-00-670-4431
Federal Supply Class: 5305
National Item Identification Number: 006704431
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:
AB2504F8 | 02310 | PATTONAIR USA INC | AB2504F8 | 70127 | ABSCOA INDUSTRIES INC |
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Techincal Specification:
FASTENER LENGTH | 0.485 INCHES MINIMUM AND 0.530 INCHES MAXIMUM | HEAD HEIGHT | 0.145 INCHES MINIMUM AND 0.160 INCHES MAXIMUM | HEAD DIAMETER | 0.555 INCHES MINIMUM AND 0.580 INCHES MAXIMUM | HEAD STYLE | WATERTIGHT | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | NOMINAL THREAD DIAMETER | 0.250 INCHES | SCREW MATERIAL | STEEL COMP 4340 OR STEEL COMP 8740 | SCREW SURFACE TREATMENT | CADMIUM | SPECIAL FEATURES | FURNISHED WITH PLASTIC WASHER AND RUBBER O-RING | THREAD CLASS | 3A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 0.345 INCHES MINIMUM AND 0.420 INCHES MAXIMUM | THREAD QUANTITY PER INCH | 28 | THREAD SERIES DESIGNATOR | UNF |
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