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National Stock Number:
5305-01-059-0228
Federal Supply Class:
5305
National Item Identification Number:
010590228
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-8-86 | 56878 | SPS TECHNOLOGIES, LLC | | 106706H-8-86 | 80539 | SPS TECHNOLOGIES, LLC | | GB510BC8-86 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | GB510CE8-86 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | GB510FD8-86 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | GB510FD8-86 | 27624 | SPS TECHNOLOGIES LLC | | GB510FD8-86 | 56878 | SPS TECHNOLOGIES, LLC | | GB510FD8-86 | 73197 | HI-SHEAR CORPORATION | | GB510FD8-86 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | H148-8-86 | 17446 | HUCK INTERNATIONAL, INC | | H148-8-86 | 97928 | HUCK INTL INC | | HT171-8-86 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL | | FASTENER LENGTH | 6.120 INCHES MINIMUM AND 6.167 INCHES MAXIMUM | | GRIP DIAMETER | 0.4982 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM | | GRIP LENGTH | 5.365 INCHES MINIMUM AND 5.385 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 | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-8837 TY 2 CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.735 INCHES MINIMUM AND 0.802 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNJF |
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