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National Stock Number:
5305-12-301-8633
Federal Supply Class:
5305
National Item Identification Number:
123018633
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:
| 2300002-181942-002 | D1839 | BUNDESAMT FUER AUSRUESTUNG, | | 2300002-181942.002 | C2311 | BUNDESAMT FUER AUSRUESTUNG, INFORMATIONSTECHNIK UND NUTZUNG DER BUNDESWEHR (BAAINBW) - BENUTZUNGSRECHTE AN TECHNISCHEN U | | 9842713 | D1785 | HENSCHEL WEHRTECHNIK GMBH | | 2300002-181942.002 | D1839 | BUNDESAMT FUER AUSRUESTUNG, | | 2300002-181942.002 | D9448 | RHEINMETALL LANDSYSTEME GMBH | | 2300002-181942.002 | DRMV1 | RHEINMETALL MAN MILITARY VEHICLES GMBH | | 9842713 | D9448 | RHEINMETALL LANDSYSTEME GMBH |
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Techincal Specification:
| FASTENER LENGTH | 40.0 MILLIMETERS NOMINAL | | GRIP DIAMETER | 13.0 MILLIMETERS NOMINAL | | GRIP LENGTH | 16.5 MILLIMETERS NOMINAL | | HARDNESS RATING | 140 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM OVERALL AND 215 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM OVERALL | | HEAD HEIGHT | 7.5 MILLIMETERS NOMINAL | | HEAD STYLE | HEXAGON | | INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 12.0 MILLIMETERS | | SPECIAL FEATURES | KLEMMTEIL MIT EINDREHUNG | | WIDTH BETWEEN FLATS | 19.0 MILLIMETERS NOMINAL | | STRENGTH GRADE DESIGNATION | 5.6 | | SURFACE TREATMENT | ZINC OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 20.5 MILLIMETERS NOMINAL | | THREAD SERIES DESIGNATOR | ISO M | | THREAD PITCH IN MILLIMETERS | 1.75 |
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