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National Stock Number:
5305-01-512-8344
Federal Supply Class:
5305
National Item Identification Number:
015128344
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:
| 11825C4-6AF | 59563 | REID PRODUCTS INC. | | 11845C4-6AF | 59563 | REID PRODUCTS INC. | | 3M1170C4-6AF | 06710 | VALLEY-TODECO, INC. | | 3M1170C4-6AF | 0K6Z0 | SATURN FASTENERS INC | | 3M1170C4-6AF | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | 3M1170C4-6AF | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | TX1027C4-6AF | 06725 | SPS TECHNOLOGIES, LLC | | TX1027C4-6AF | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | TX1027C4-6AF | 0PTK6 | SPS TECHNOLOGIES INC | | TX1027C4-6AF | 17446 | HUCK INTERNATIONAL, INC | | GS1014C4-6AF | 1EM77 | B & B SPECIALTIES INC | | TX1027C4-6AF | 27624 | SPS TECHNOLOGIES LLC | | 3M1170C4-6AF | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | 3M1170C4-6AF | 76301 | THE BOEING COMPANY | | TX1027C4-6AF | 56878 | SPS TECHNOLOGIES, LLC | | WC1170C4-6AF | 60516 | WEST COAST AEROSPACE, INC. | | TX1027C4-6AF | 73197 | HI-SHEAR CORPORATION | | TX1027C4-6AF | 80539 | SPS TECHNOLOGIES, LLC | | TX1027C4-6AF | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | TX1027C4-6AF | C4293 | ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH | | TX1027C4-6AF | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.420 INCHES MINIMUM AND | | 0.430 INCHES MAXIMUM | | FASTENER LENGTH | 0.785 INCHES MINIMUM AND | | 0.815 INCHES MAXIMUM | | MATERIAL | NICKEL ALLOY 718 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD DIAMETER | 0.385 INCHES MINIMUM AND | | 0.394 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | TORX | | SPLINE MAJOR DIAMETER | 0.154 INCHES MINIMUM AND | | 0.156 INCHES MAXIMUM | | GRIP LENGTH | 0.365 INCHES MINIMUM AND | | 0.385 INCHES MAXIMUM | | GRIP DIAMETER | 0.249 INCHES NOMINAL | | POINT STYLE | FLAT | | POINT DIAMETER | 0.425 INCHES NOMINAL | | SPECIAL FEATURES | 125 KSI SHEAR STRENGTH | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, 100 DEGREE REDUCED HEAD, GEAR DRIVE RECESS |
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