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National Stock Number:
5305-01-393-4203
Federal Supply Class:
5305
National Item Identification Number:
013934203
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:
| 11883-5L20 | 59563 | REID PRODUCTS INC. | | 3M926-5L20 | 007R1 | TWIST TITE MFG, INC | | 3M926-5L20 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | 3M926-5L20 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | 3M926-5L20 | 76301 | THE BOEING COMPANY | | 3M926-5L20 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | 3M926-5L200A | 06710 | VALLEY-TODECO, INC. | | HT4068-5-20A | 06725 | SPS TECHNOLOGIES, LLC | | HT4068-5-20A | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | 3M926-5L200A | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | HT4068-5-20A | 27624 | SPS TECHNOLOGIES LLC | | HT4068-5-20A | 56878 | SPS TECHNOLOGIES, LLC | | HT4068-5-20A | 73197 | HI-SHEAR CORPORATION | | HT4068-5-20A | 80539 | SPS TECHNOLOGIES, LLC | | WC4068-5-20 | 60516 | WEST COAST AEROSPACE, INC. | | HT4068-5-20A | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4068-5-20A | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.531 INCHES NOMINAL | | FASTENER LENGTH | 1.688 INCHES MINIMUM AND | | 1.708 INCHES MAXIMUM | | MATERIAL | STEEL COMP XM-13 OVERALL | | SURFACE TREATMENT | ALUMINUM AND | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-83488, TY2, CL3 MIL SPEC ALL TREATMENT RESPONSES OVERALL | | HEAD STYLE | OVAL COUNTERSUNK | | HEAD DIAMETER | 0.429 INCHES MINIMUM AND | | 0.477 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | GRIP LENGTH | 1.240 INCHES MINIMUM AND | | 1.260 INCHES MAXIMUM | | GRIP DIAMETER | 0.3110 INCHES MINIMUM AND | | 0.3120 INCHES MAXIMUM | | FEATURES PROVIDED | DRY FILM LUBRICANT AND | | CETYL ALCOHOL LUBRICANT |
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