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National Stock Number:
5305-01-513-1155
Federal Supply Class:
5305
National Item Identification Number:
015131155
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:
| 11827D4-21A | 59563 | REID PRODUCTS INC. | | 3M1169D4-21A | 76301 | THE BOEING COMPANY | | TX1026D4-21A | 06725 | SPS TECHNOLOGIES, LLC | | TX1026D4-21A | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HP1169D2-21 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | TX1026D4-21A | 27624 | SPS TECHNOLOGIES LLC | | TX1026D4-21A | 56878 | SPS TECHNOLOGIES, LLC | | TX1026D4-21A | 73197 | HI-SHEAR CORPORATION | | TX1026D4-21A | 80539 | SPS TECHNOLOGIES, LLC | | TX1026D4-21A | C4293 | ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH |
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Techincal Specification:
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | | FASTENER LENGTH | 1.722 INCHES MINIMUM AND 1.752 INCHES MAXIMUM | | GRIP DIAMETER | 0.249 INCHES NOMINAL | | GRIP LENGTH | 1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM | | HEAD DIAMETER | 0.497 INCHES MINIMUM AND 0.506 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | INTERNAL DRIVE STYLE | TORX | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, 100 DEGREE TENSION HEAD, GEAR DRIVE RECESS | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY 718 OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SPECIAL FEATURES | 125 KSI SHEAR STRENGTH | | POINT STYLE | FLAT | | POINT DIAMETER | 0.425 INCHES NOMINAL | | SPLINE MAJOR DIAMETER | 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.420 INCHES MINIMUM AND 0.430 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 28 |
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