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National Stock Number:
5305-01-081-3105
Federal Supply Class:
5305
National Item Identification Number:
010813105
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-8-A90 | 56878 | SPS TECHNOLOGIES, LLC | | 106706H-8-A90 | 80539 | SPS TECHNOLOGIES, LLC | | 106706T-8-90 | 80539 | SPS TECHNOLOGIES, LLC | | GB510BC8-90 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | GB510CE8-90 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | GB510CE8-90 | 56878 | SPS TECHNOLOGIES, LLC | | H148-8-90 | 17446 | HUCK INTERNATIONAL, INC | | H148-8-90 | 97928 | HUCK INTL INC | | HR204-8-90 | 73197 | HI-SHEAR CORPORATION | | HR204-8-90 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | HT8171-8-90 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | PBF1202-8-90 | 27624 | SPS TECHNOLOGIES LLC | | SC1779-8-90 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 6.370 INCHES MINIMUM AND 6.417 INCHES MAXIMUM | | GRIP DIAMETER | 0.4982 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM | | GRIP LENGTH | 5.615 INCHES MINIMUM AND 5.635 INCHES MAXIMUM | | HARDNESS RATING | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 0.950 INCHES MINIMUM AND 1.017 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP H11 OVERALL | | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NAS 672 ASSN STD 1ST TREATMENT RESPONSE OR MIL-C-8837 TY 2 CL 2 MIL SPEC 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OR CADMIUM AND CHROMATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.735 INCHES MINIMUM AND 0.802 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNJF |
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