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National Stock Number:
5305-00-083-2143
Federal Supply Class:
5305
National Item Identification Number:
000832143
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:
| 72791H3A6 | 50392 | SPS TECHNOLOGIES INC | | 72791H3A6 | 56878 | SPS TECHNOLOGIES, LLC | | GB510AD3A6 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 0.595 INCHES MINIMUM AND 0.642 INCHES MAXIMUM | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND 0.1894 INCHES MAXIMUM | | GRIP LENGTH | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM | | HARDNESS RATING | 50.0 ROCKWELL C NOMINAL OVERALL | | HEAD DIAMETER | 0.325 INCHES MINIMUM AND 0.385 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS6485 FED SPEC 1ST MATERIAL RESPONSE OR AMS6487 FED SPEC 2ND MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP H11 OVERALL | | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | SPS-P-671,50392 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.210 INCHES MINIMUM AND 0.277 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNJF |
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