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National Stock Number:
5305-01-539-6555
Federal Supply Class:
5305
National Item Identification Number:
015396555
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:
| 11885-6L9 | 59563 | REID PRODUCTS INC. | | 3M927-6L9 | 007R1 | TWIST TITE MFG, INC | | 3M927-6L9 | 76301 | THE BOEING COMPANY | | HT4069-6-9A | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | WC4069-6-9 | 60516 | WEST COAST AEROSPACE, INC. |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.203 INCHES NOMINAL | | GRIP DIAMETER | 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM | | GRIP LENGTH | 0.562 INCHES NOMINAL | | HEAD DIAMETER | 0.510 INCHES NOMINAL | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5662 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY 718 OVERALL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW-CLOSE TOLERANCE 100 DEG COUNTERSUNK REDUCED HEAD, HI-TORQUE, NON MAGNETIC CRES, IVD ALUMINUM COATED | | SPECIAL FEATURES | LUBRICANT- CETYL ALCOHOL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-DTL-83488 TY 2 CLS 3 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ALUMINUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.641 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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