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National Stock Number:
5305-01-603-8572
Federal Supply Class:
5305
National Item Identification Number:
016038572
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:
| PMT1124-10 | 05755 | PHILLIPS SCREW CO RULE INDUSTRIES DIV | | PMT1124-10 | 06710 | VALLEY-TODECO, INC. | | PMT1124-10 | 06725 | SPS TECHNOLOGIES, LLC | | PMT1124-10 | 08039 | BIMET CORP | | PMT1124-10 | 17446 | HUCK INTERNATIONAL, INC | | PMT1124-10 | 1ER65 | 3-V FASTENER CO., INC. | | PMT1124-10 | 1RC86 | HOWMET GLOBAL FASTENING SYSTEMS INC | | PMT1124-10 | 56878 | SPS TECHNOLOGIES, LLC | | PMT1124-10 | 82224 | JOHN HASSALL, INC. | | PMT1124-10 | 98524 | MONOGRAM AEROSPACE FASTENERS, 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 | 0.316 INCHES NOMINAL | | FASTENER LENGTH | 0.941 INCHES NOMINAL | | MATERIAL | STEEL COMP 4140 OR | | STEEL COMP 4340 OR | | STEEL COMP 8740 OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | HEAD STYLE | FLAT FILLISTER | | HEAD DIAMETER | 0.365 INCHES MINIMUM AND | | 0.375 INCHES MAXIMUM | | HEAD HEIGHT | 0.1 INCHES NOMINAL | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | | GRIP LENGTH | 0.625 INCHES NOMINAL | | GRIP DIAMETER | 0.248 INCHES MINIMUM AND | | 0.249 INCHES MAXIMUM | | SPECIAL FEATURES | MORTORQ SPIRAL DRIVE RECESS |
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