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National Stock Number:
5305-01-494-0616
Federal Supply Class:
5305
National Item Identification Number:
014940616
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:
| 11853C4-3-6A | 59563 | REID PRODUCTS INC. | | 3M1262C4-3-6A | 007R1 | TWIST TITE MFG, INC | | TX1024C4-3-6A | 06725 | SPS TECHNOLOGIES, LLC | | TX1024C4-3-6A | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | 3M1262C4-3-6A | 1EM77 | B & B SPECIALTIES INC | | 3M1262C4-3-6A | 76301 | THE BOEING COMPANY | | TX1024C4-3-6A | 0PTK6 | SPS TECHNOLOGIES INC | | TX1024C4-3-6A | 27624 | SPS TECHNOLOGIES LLC | | TX1024C4-3-6A | 56878 | SPS TECHNOLOGIES, LLC | | TX1024C4-3-6A | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | TX1024C4-3-6A | 73197 | HI-SHEAR CORPORATION | | TX1024C4-3-6A | 80539 | SPS TECHNOLOGIES, LLC | | TX1024C4-3-6A | 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 | 0.372 INCHES NOMINAL | | FASTENER LENGTH | 0.543 INCHES MINIMUM AND | | 0.573 INCHES MAXIMUM | | MATERIAL | NICKEL ALLOY 718 OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD DIAMETER | 0.358 INCHES MINIMUM AND | | 0.365 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | TORX | | SPLINE MAJOR DIAMETER | 0.1540 INCHES MINIMUM AND | | 0.1560 INCHES MAXIMUM | | GRIP LENGTH | 0.176 INCHES MINIMUM AND | | 0.196 INCHES MAXIMUM | | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND | | 0.2495 INCHES MAXIMUM | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT 100 DEGREE REDUCED HEAD,GEAR DRIVE RECESS-SPECIAL THREAD LENGTH, INCONEL 718 (128 KSI SHEAR) |
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