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National Stock Number:
5305-00-660-3179
Federal Supply Class:
5305
National Item Identification Number:
006603179
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:
| BACB30LU4-6 | 06710 | VALLEY-TODECO, INC. | | BACB30LU4-6 | 06725 | SPS TECHNOLOGIES, LLC | | BACB30LU4-6 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BACB30LU4-6 | 17446 | HUCK INTERNATIONAL, INC | | BACB30LU4-6 | 17943 | FEDERAL MANUFACTURING CORP | | BACB30LU4-6 | 1RC56 | PHOTECH CORP | | BACB30LU4-6 | 1RC86 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BACB30LU4-6 | 27624 | SPS TECHNOLOGIES LLC | | BACB30LU4-6 | 56878 | SPS TECHNOLOGIES, LLC | | BACB30LU4-6 | 57928 | SONIC INDUSTRIES, INC. | | BACB30LU4-6 | 80539 | SPS TECHNOLOGIES, LLC | | BACB30LU4-6 | 81205 | THE BOEING COMPANY | | BACB30LU4-6 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BACB30LU4-6 | 97928 | HUCK INTL INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 0.785 INCHES MINIMUM AND 0.815 INCHES MAXIMUM | | HEAD DIAMETER | 0.510 INCHES NOMINAL | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SCREW MATERIAL | STEEL | | SCREW SURFACE TREATMENT | CADMIUM OR NICKEL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.425 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNF |
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