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National Stock Number:
5305-01-613-9066
Federal Supply Class:
5305
National Item Identification Number:
016139066
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:
| BACB30YP6K2 | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 0.405 INCHES MINIMUM AND 0.425 INCHES MAXIMUM | | GRIP DIAMETER | 0.189 INCHES MINIMUM AND 0.190 INCHES MAXIMUM | | GRIP LENGTH | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM | | HEAD DIAMETER | 0.282 INCHES MINIMUM AND 0.287 INCHES MAXIMUM | | HEAD HEIGHT | 0.437 INCHES MINIMUM AND 0.472 INCHES MAXIMUM | | HEAD STYLE | FILLISTER COUNTERSUNK | | INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE | | MATERIAL | TITANIUM ALLOY OVERALL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, CLOSE TOLERANCE | | PROPRIETARY CHARACTERISTICS | PACS | | NONSTANDARD THREAD PITCH DIAMETER | -30.0 TO 30.0 INCHES | | SPECIAL FEATURES | REDUCED SHEAR DOME HEAD; HEX DRIVE; 95 KSI SHEAR; 6AL-4V; LIGHTWEIGHT | | SURFACE TREATMENT | ALUMINUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.285 INCHES MINIMUM AND 0.295 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNJF |
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