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National Stock Number:
5305-00-151-8658
Federal Supply Class:
5305
National Item Identification Number:
001518658
Description:
SCREW,CLOSE TOLERANCE
Detail:
A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 IN.) (0.025 mm) or less of a specific diameter for items (1.000 IN.) (25 mm) or less in diameter. Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 IN.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.
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Manufacturer Information:
| 2R1465-10 | 03481 | BFGOODRICH CO THE AEROSPACE DIV ENGINEERED POLYMER PRODUCTS | | 2R1863-1 | 03481 | BFGOODRICH CO THE AEROSPACE DIV ENGINEERED POLYMER PRODUCTS | | BM19049-4-741 | 97928 | HUCK INTL INC | | BM19070-4-741 | 17446 | HUCK INTERNATIONAL, INC | | BM19070-4-741 | 97928 | HUCK INTL INC | | GS551P-741 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | GS551P4-741 | 02692 | DOLLY MFG CORP | | GS551P4-741 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | HP6551P4-741 | 02692 | DOLLY MFG CORP | | PBF1286-741 | 27624 | SPS TECHNOLOGIES LLC |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.024 INCHES MINIMUM AND 1.054 INCHES MAXIMUM | | GRIP LENGTH | 0.665 INCHES MINIMUM AND 0.695 INCHES MAXIMUM | | GRIP DIAMETER | 0.2540 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM | | HARDNESS RATING | 33.0 ROCKWELL C MINIMUM OVERALL | | HEAD DIAMETER | 0.357 INCHES NOMINAL | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | SLOT | | MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 4037 OVERALL | | MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SPECIAL FEATURES | COLOR TAN,SURFACE OF HEAD | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.329 INCHES MINIMUM AND 0.389 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNF |
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