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National Stock Number:
5305-01-460-9880
Federal Supply Class:
5305
National Item Identification Number:
014609880
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:
| 291AS256-4 | 30003 | NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER | | AN500A3-7 | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE | | LP-500-A3-7M | 16941 | LONG-LOK LLC |
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Techincal Specification:
| HEAD HOLE CONFIGURATION STYLE | ROUND LONGITUDINAL HOLE | | HEAD STYLE | FILLISTER | | HOLE DIAMETER | 0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM | | HOLE QUANTITY | 4 | | NOMINAL THREAD DIAMETER | 0.099 INCHES | | INTERNAL DRIVE STYLE | SLOT | | SCREW MATERIAL | STEEL | | SCREW SURFACE TREATMENT | CADMIUM | | SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TY 2, CL 3 FED SPEC SINGLE TREATMENT RESPONSE | | SPECIAL FEATURES | NAVY 291AS256-4 CONFORMS TO AERONAUTICAL STANDS GROUP AN500A3-7 | | THREAD LENGTH | 0.386 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 48 | | THREAD SERIES DESIGNATOR | UNC | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | FASTENER LENGTH | 0.407 INCHES MINIMUM AND 0.438 INCHES MAXIMUM | | HEAD DIAMETER | 0.145 INCHES MINIMUM AND 0.161 INCHES MAXIMUM | | HEAD HEIGHT | 0.055 INCHES MINIMUM AND 0.062 INCHES MAXIMUM |
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