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National Stock Number:
5305-00-050-0453
Federal Supply Class:
5305
National Item Identification Number:
000500453
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:
| 68410 | 93835 | PARKER HANNIFIN CORPORATION |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.690 INCHES NOMINAL | | FASTENER LENGTH | 1.594 INCHES NOMINAL | | MATERIAL | STEEL COMP 630 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | IL-S-5002 MIL STD 10TH TREATMENT RESPONSE OVERALL | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND | | 40.0 ROCKWELL C MAXIMUM OVERALL | | HEAD STYLE | ROUND | | HEAD DIAMETER | 0.313 INCHES NOMINAL | | HEAD HEIGHT | 0.406 INCHES NOMINAL | | INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE | | SPECIAL FEATURES | HEAD END HAS SLOT 0.060 WIDE BY 0.248 LONG,HEAD END ALSO DRILLED AND STEPPED 0.094 DIAMETER STEP DIAMETER 0.188 WITH 63 MICRO-INCH FINISH;THREAD END HAS 0.110 TIP BY 0.145 DIAMETER BEFORE THREAD STARTS,TIP HAS 0.040 DIAMETER HOLE THRU ON CENTERLINE;SCREW HAS RELIEF 0.965 FROM THEADED END 0.099 WIDE A 32 MICRO-INCH FINISH IN THIS AREA | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 93835 | | DESIGN CONTROL REFERENCE | 68410 |
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