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National Stock Number: 5305-01-526-2784
Federal Supply Class: 5305
National Item Identification Number: 015262784
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:
NAS1802-4-72 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
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Techincal Specification:
FASTENER LENGTH | 4.484 INCHES MINIMUM AND 4.531 INCHES MAXIMUM | HEAD HEIGHT | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM | HEAD STYLE | HEXAGON | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | NOMINAL THREAD DIAMETER | 0.250 INCHES | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,MACHINE | SCREW MATERIAL | IRON ALLOY 660 | SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE | SCREW SURFACE TREATMENT | PASSIVATE | WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM | THREAD CLASS | 3A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 1.750 INCHES NOMINAL | THREAD SERIES DESIGNATOR | UNJF | THREAD QUANTITY PER INCH | 28 |
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