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National Stock Number:
5305-01-581-4703
Federal Supply Class:
5305
National Item Identification Number:
015814703
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:
| 3M927-3DL6 | 007R1 | TWIST TITE MFG, INC | | 3M927-3DL6 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | HT4069-3D6A | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4069-3D6A | 56878 | SPS TECHNOLOGIES, LLC |
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Techincal Specification:
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | FASTENER LENGTH | 0.703 INCHES MINIMUM AND 0.733 INCHES MAXIMUM | | GRIP LENGTH | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM | | GRIP DIAMETER | 0.188 INCHES MINIMUM AND 0.189 INCHES MAXIMUM | | HEAD DIAMETER | 0.296 INCHES MINIMUM AND 0.301 INCHES MAXIMUM | | HEAD STYLE | OVAL COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL | NICKEL ALLOY 718 OVERALL | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SPECIAL FEATURES | DRILLED THREADS | | SURFACE TREATMENT | ALUMINUM AND CHROMATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.406 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) | | THREAD QUANTITY PER INCH | 32 |
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