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National Stock Number:
5305-01-399-0417
Federal Supply Class:
5305
National Item Identification Number:
013990417
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:
| 7T0142 | 77445 | RTX CORPORATION |
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Techincal Specification:
| FASTENER LENGTH | 0.250 INCHES NOMINAL | | HARDNESS RATING | 29.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM | | HEAD HEIGHT | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | PROPRIETARY CHARACTERISTICS | PACS | | NOMINAL THREAD DIAMETER | 0.164 INCHES | | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | AMS5737 FED SPEC SINGLE MATERIAL RESPONSE | | SCREW MATERIAL | IRON ALLOY 660 | | SCREW SURFACE TREATMENT | PASSIVATE | | WIDTH BETWEEN FLATS | 0.312 INCHES NOMINAL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNJC |
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