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National Stock Number:
5305-00-925-2546
Federal Supply Class:
5305
National Item Identification Number:
009252546
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:
| 9984880 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| FASTENER LENGTH | 0.300 INCHES MINIMUM AND 0.340 INCHES MAXIMUM | | HEAD HEIGHT | 0.360 INCHES NOMINAL | | HEAD STYLE | HEXAGON | | NOMINAL THREAD DIAMETER | 0.138 INCHES | | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE | | SCREW MATERIAL | STEEL COMP 303 | | SCREW SURFACE TREATMENT | PASSIVATE | | SPECIAL FEATURES | THREAD UNDERCUT 0.085 IN. TO 0.095 IN. DIA BY 0.030 TO 0.050 IN. L | | WIDTH BETWEEN FLATS | 0.250 INCHES NOMINAL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) | | THREAD QUANTITY PER INCH | 32 |
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