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National Stock Number:
5305-00-003-7118
Federal Supply Class:
5305
National Item Identification Number:
000037118
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:
| 3012T70P01 | 99207 | GENERAL ELECTRIC COMPANY |
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Techincal Specification:
| FASTENER LENGTH | 0.610 INCHES MINIMUM AND 0.630 INCHES MAXIMUM | | GRIP LENGTH | 0.400 INCHES MINIMUM AND 0.420 INCHES MAXIMUM | | GRIP DIAMETER | 0.1313 INCHES MINIMUM AND 0.1316 INCHES MAXIMUM | | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM OVERALL | | HEAD DIAMETER | 0.220 INCHES MINIMUM AND 0.230 INCHES MAXIMUM | | HEAD HEIGHT | 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM | | HEAD STYLE | FLAT CHAMFER | | INTERNAL DRIVE STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 630 OVERALL | | NOMINAL THREAD DIAMETER | 0.138 INCHES | | WIDTH ACROSS FLATS | 0.109 INCHES MINIMUM AND 0.111 INCHES MAXIMUM | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.190 INCHES MINIMUM AND 0.230 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNC |
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