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National Stock Number:
5305-01-118-4927
Federal Supply Class:
5305
National Item Identification Number:
011184927
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:
| 106706H-3-A29 | 56878 | SPS TECHNOLOGIES, LLC | | 106706H-3-A29 | 80539 | SPS TECHNOLOGIES, LLC | | GB510CE3-29 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | GB510CE3-29 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | GB510CE3-29 | 27624 | SPS TECHNOLOGIES LLC | | GB510CE3-29 | 73197 | HI-SHEAR CORPORATION | | H148-3-29 | 17446 | HUCK INTERNATIONAL, INC | | HT8171-3-29 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | H148-3-29 | 97928 | HUCK INTL INC | | GB510CE3-29 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.308 INCHES MINIMUM AND | | 0.375 INCHES MAXIMUM | | FASTENER LENGTH | 2.130 INCHES MINIMUM AND | | 2.177 INCHES MAXIMUM | | MATERIAL | STEEL COMP H11 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OR | | CADMIUM AND | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NAS672 ASSN STD 1ST TREATMENT RESPONSE OR | | MIL-C-8837,TYPE 2,CLASS 2 MIL SPEC 2ND TREATMENT RESPONSE OVERALL | | HARDNESS RATING | 46.0 ROCKWELL C MINIMUM AND | | 50.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH | | HEAD STYLE | FLAT COUNTERSUNK | | HEAD DIAMETER | 0.325 INCHES MINIMUM AND | | 0.385 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | GRIP LENGTH | 1.802 INCHES MINIMUM AND | | 1.822 INCHES MAXIMUM | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND | | 0.1894 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES GRIP |
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