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National Stock Number: 5305-00-167-4117
Federal Supply Class: 5305
National Item Identification Number: 001674117
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:
18402 | 00198 | PRATT & WHITNEY CANADA CORP |
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Techincal Specification:
FASTENER LENGTH | 4.688 INCHES NOMINAL | HEAD DIAMETER | 0.375 INCHES NOMINAL | HEAD HEIGHT | 0.219 INCHES NOMINAL | HEAD HOLE CONFIGURATION STYLE | ROUND | HEAD STYLE | FILLISTER | HOLE DIAMETER | 0.078 INCHES NOMINAL | HOLE QUANTITY | 1 | INTERNAL DRIVE STYLE | SLOT | NOMINAL THREAD DIAMETER | 0.250 INCHES | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | AMS ASSN STD ALL MATERIAL RESPONSES | SCREW MATERIAL | STEEL COMP 6150 OR STEEL COMP 4640 | SCREW SURFACE TREATMENT | CADMIUM | SPECIAL FEATURES | 0.010 IN. DEEP BY 0.062 IN. LG UNDERCUT LOCATED UNDER HEAD,0.248 IN. MIN GRIP DIA. 0.249 IN. MAX GRIP DIA | THREAD CLASS | 3A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 0.500 INCHES NOMINAL | THREAD SERIES DESIGNATOR | UNF | THREAD QUANTITY PER INCH | 28 |
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