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National Stock Number:
5305-01-216-9862
Federal Supply Class:
5305
National Item Identification Number:
012169862
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:
| 11839V5-13-25 | 59563 | REID PRODUCTS INC. | | 3M1034V5-13-25 | 76301 | THE BOEING COMPANY | | HT4075V5-13-25 | 56878 | SPS TECHNOLOGIES, LLC | | HT4075V5-13-25 | 73197 | HI-SHEAR CORPORATION | | HT4075V5-13-25 | 80539 | SPS TECHNOLOGIES, LLC | | HT4075V5-13-25 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4075V5-13-25 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.328 INCHES MINIMUM AND 1.358 INCHES MAXIMUM | | GRIP LENGTH | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM | | HEAD DIAMETER | 0.625 INCHES MINIMUM AND 0.635 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | TITANIUM ALLOY UNS R56400 OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SPECIAL FEATURES | THD HOLE IN TOP OF HEAD 0.138-32 UNJC-3B THD,HOLE 0.300 IN. MIN. 0.345 IN. MAX DP,COUNTERBORE 0.145 IN. MIN. 0.150 IN. MAX DIA; INJECTION PORT 0.120 IN. LG,0.060 IN. WIDE IN UNTHD SHANK; DISTANCE FROM TOP OF HEAD TO BEGINNING OF INJECTION PORT 0.250 IN. | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.506 INCHES MINIMUM AND 0.556 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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