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National Stock Number:
5305-00-060-9478
Federal Supply Class:
5305
National Item Identification Number:
000609478
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:
| 202-15500-4-13 | 80378 | TRIUMPH AEROSTRUCTURES, LLC | | AS-110-4-13 | 84256 | AVIBANK MFG., INC. | | AS04-13 | 84256 | AVIBANK MFG., INC. | | CA2600-04-13 | 29372 | HOWMET GLOBAL FASTENING SYSTEMS INC. | | CA4850-04-13 | 29372 | HOWMET GLOBAL FASTENING SYSTEMS INC. | | CA4850-4-13 | 29372 | HOWMET GLOBAL FASTENING SYSTEMS INC. | | VP1072-4-13 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | VP933-4-13 | 16258 | SPACE-LOK, INC. |
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Techincal Specification:
| FASTENER LENGTH | 1.229 INCHES MINIMUM AND 1.276 INCHES MAXIMUM | | GRIP DIAMETER | 0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM | | GRIP LENGTH | 0.812 INCHES MINIMUM AND 0.828 INCHES MAXIMUM | | HEAD HEIGHT | 0.131 INCHES MINIMUM AND 0.141 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | INTERNAL DRIVE STYLE | SLOT | | LOCKING FEATURE | DETENT BALL GRIP | | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 4340 OR STEEL COMP 8740 OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | WIDTH BETWEEN FLATS | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.315 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNF |
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