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National Stock Number:
5305-01-517-4331
Federal Supply Class:
5305
National Item Identification Number:
015174331
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:
| 123178E04T-0004 | 80539 | SPS TECHNOLOGIES, LLC | | AIC4037E04-0004 | 06725 | SPS TECHNOLOGIES, LLC | | FIT111-0024-0004 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | LE111-0024 | 43999 | THE BOEING COMPANY | | LE111-0024-0004 | 43999 | THE BOEING COMPANY | | LE111-0024-0004 | 89193 | UNITED AIRCRAFT PRODUCTS INC | | PBF1376-0004 | 27624 | SPS TECHNOLOGIES LLC | | SC2176TE04-0004 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | SII-1085-0004 | 57928 | SONIC INDUSTRIES, INC. |
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Techincal Specification:
| FASTENER LENGTH | 0.468 INCHES MINIMUM AND 0.498 INCHES MAXIMUM | | GRIP LENGTH | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM | | GRIP DIAMETER | 0.1095 INCHES MINIMUM AND 0.1115 INCHES MAXIMUM | | HEAD DIAMETER | 0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM | | HEAD HEIGHT | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM | | HEAD STYLE | PAN NO. 2 | | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) | | MATERIAL | IRON ALLOY 660 OVERALL | | NOMINAL THREAD DIAMETER | 0.112 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.232 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 40 | | THREAD SERIES DESIGNATOR | UNJC |
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