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National Stock Number:
5305-01-048-3241
Federal Supply Class:
5305
National Item Identification Number:
010483241
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:
| 0412-224 | 03956 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 0412-224 | 56232 | LOCKHEED MARTIN CORPORATION | | 908579-02 | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| COUNTERSINK ANGLE | 81.0 DEGREES NOMINAL | | FASTENER LENGTH | 0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM | | HEAD DIAMETER | 0.249 INCHES MINIMUM AND 0.279 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | SLOT | | NOMINAL THREAD DIAMETER | 0.138 INCHES | | SCREW MATERIAL | COPPER ALLOY 260 OR COPPER ALLOY 268 OR COPPER ALLOY 270 OR COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OR COPPER ALLOY 377 OR COPPER ALLOY 764 OR COPPER ALLOY 230 OR COPPER ALLOY 240 OR COPPER ALLOY 510 OR COPPER ALLOY 745 OR COPPER ALLOY 752 OR COPPER ALLOY 770 | | SCREW SURFACE TREATMENT | NICKEL | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.199 INCHES MINIMUM AND 0.306 INCHES MAXIMUM | | THREAD CLASS | 2A | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 32 |
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