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National Stock Number:
5305-01-241-0756
Federal Supply Class:
5305
National Item Identification Number:
012410756
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:
| 10113571 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | HT4020-5-16A | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4020-5-16A | 17446 | HUCK INTERNATIONAL, INC | | HT4020-5-16A | 56878 | SPS TECHNOLOGIES, LLC | | HT4020-5-16A | 73197 | HI-SHEAR CORPORATION | | HT4020-5-16A | 80539 | SPS TECHNOLOGIES, LLC | | ST3M652C5-16A | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | ST3M652C5-16A | 60516 | WEST COAST AEROSPACE, INC. | | WC4020-5-16A | 60516 | WEST COAST AEROSPACE, INC. | | ST3M652C5-16A | 76301 | THE BOEING COMPANY | | HT4020-5-16A | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4020-5-16A | 97928 | HUCK INTL INC | | ST3M652C5-16A | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | HT4020-5-16A | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.515 INCHES MINIMUM AND 1.562 INCHES MAXIMUM | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM | | GRIP LENGTH | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM | | HEAD DIAMETER | 0.629 INCHES MINIMUM AND 0.634 INCHES MAXIMUM | | HEAD HEIGHT | 0.088 INCHES MINIMUM AND 0.090 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK UNDERCUT | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP XM-13 OVERALL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SPECIAL FEATURES | FURNISHED WITH ONE O-RING; CETYL ALCOHOL LUBRICANT | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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