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National Stock Number: 5305-00-808-7831
Federal Supply Class: 5305
National Item Identification Number: 008087831
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:
51B221-27 | 0JRC1 | NORTHROP GRUMMAN TECHNICAL SERVICES, INC. | 51B221-27 | 76823 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
FASTENER LENGTH | 1.963 INCHES NOMINAL | HEAD DIAMETER | 0.381 INCHES NOMINAL | HEAD HEIGHT | 0.118 INCHES NOMINAL | HEAD STYLE | ROUND | INTERNAL DRIVE STYLE | TORQUE SET | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH | NOMINAL THREAD DIAMETER | 0.190 INCHES | SCREW MATERIAL | STEEL | SCREW SURFACE TREATMENT | CADMIUM | THREAD LENGTH | 0.276 INCHES MINIMUM | THREAD CLASS | 3A | THREAD DIRECTION | RIGHT-HAND | THREAD SERIES DESIGNATOR | UNF | THREAD QUANTITY PER INCH | 32 |
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