5305-00-001-8180 SCREW,CLOSE TOLERANCE Index 5305-00-001-8182 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-00-001-8181

Federal Supply Class:
5305

National Item Identification Number:
000018181

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.


Manufacturer Information:
3MA334CFA1506065NEWPORT AERONAUTICAL SALES
3MA334CFA1506725SPS TECHNOLOGIES, LLC
3MA334CFA1506950HOWMET GLOBAL FASTENING SYSTEMS INC
3MA334CFA1577545REED AND PRINCE MFG CO
3MA334CFA1592215HOWMET GLOBAL FASTENING SYSTEMS INC
3MFR334CFA1576301THE BOEING COMPANY


Techincal Specification:
FASTENER LENGTH1.641 INCHES MINIMUM AND 1.688 INCHES MAXIMUM
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM


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