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National Stock Number:
5305-01-199-0250
Federal Supply Class:
5305
National Item Identification Number:
011990250
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:
| NA0035-050012 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
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Techincal Specification:
| EXTERNAL THREAD TOLERANCE CLASS | 4H6H | | FASTENER LENGTH | 21.00 MILLIMETERS NOMINAL | | GRIP DIAMETER | 4.9785 MILLIMETERS NOMINAL | | GRIP LENGTH | 12.00 MILLIMETERS NOMINAL | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL | | HEAD DIAMETER | 9.7 MILLIMETERS MINIMUM AND 10.0 MILLIMETERS MAXIMUM | | HEAD HEIGHT | 2.8 MILLIMETERS MINIMUM AND 3.0 MILLIMETERS MAXIMUM | | HEAD STYLE | PAN NO. 2 | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 5.0 MILLIMETERS | | SPECIFICATION/STANDARD DATA | 80205-NA0035 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 9.0 MILLIMETERS NOMINAL | | THREAD SERIES DESIGNATOR | MJ | | THREAD PITCH IN MILLIMETERS | 0.8 |
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