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National Stock Number:
5305-12-178-4226
Federal Supply Class:
5305
National Item Identification Number:
121784226
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:
| 2300002-205200-002 | D1839 | BUNDESAMT FUER AUSRUESTUNG, | | 2300002-205200.002 | C2311 | BUNDESAMT FUER AUSRUESTUNG, INFORMATIONSTECHNIK UND NUTZUNG DER BUNDESWEHR (BAAINBW) - BENUTZUNGSRECHTE AN TECHNISCHEN U | | 2300002-205200.002 | D1839 | BUNDESAMT FUER AUSRUESTUNG, | | 2300002-205200.002 | D9448 | RHEINMETALL LANDSYSTEME GMBH | | 2300002-205200.002 | DRMV1 | RHEINMETALL MAN MILITARY VEHICLES GMBH |
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Techincal Specification:
| HEAD STYLE | ROUND W/WRENCH FLATS CHAMFERED | | INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE | | MATERIAL DOCUMENT AND CLASSIFICATION | DIN17440 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 1.4104 OVERALL | | NOMINAL THREAD DIAMETER | 12.0 MILLIMETERS | | WIDTH BETWEEN FLATS | 19.0 MILLIMETERS NOMINAL | | TEST DATA DOCUMENT | D1839-2300002-205200.002 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 16.5 MILLIMETERS NOMINAL | | THREAD SERIES DESIGNATOR | ISO M | | THREAD PITCH IN MILLIMETERS | 1.7 | | EXTERNAL THREAD TOLERANCE CLASS | 6 KLEIN G | | FASTENER LENGTH | 47.0 MILLIMETERS NOMINAL | | GRIP DIAMETER | 15.0 MILLIMETERS NOMINAL | | GRIP LENGTH | 27.0 MILLIMETERS NOMINAL | | HEAD DIAMETER | 25.0 MILLIMETERS NOMINAL | | HEAD HEIGHT | 5.0 MILLIMETERS NOMINAL |
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