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National Stock Number:
5305-01-531-5062
Federal Supply Class:
5305
National Item Identification Number:
015315062
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:
| 3D0264-3-5 | 88277 | THE BOEING COMPANY | | AIC1693-3-5 | 06725 | SPS TECHNOLOGIES, LLC | | PBF1668-3-5 | 27624 | SPS TECHNOLOGIES LLC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJC | | NOMINAL THREAD DIAMETER | 0.947 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.050 INCHES NOMINAL | | FASTENER LENGTH | 0.620 INCHES MINIMUM AND | | 0.650 INCHES MAXIMUM | | MATERIAL | NICKEL ALLOY 718 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | PAN NO. 2 | | HEAD DIAMETER | 0.360 INCHES MINIMUM AND | | 0.374 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | TORX | | GRIP LENGTH | 0.312 INCHES NOMINAL | | SPECIAL FEATURES | IN ADDITION TO THE THREADS, THE SURFACE ROUGHNESS OF THE DIAMETER AND THE UNDERSIDE OF THE HEAD IS TO BE 32.0 MICROINCHES |
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