5305-00-151-8689 SCREW,CLOSE TOLERANCE Index 5305-00-151-8691 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-00-151-8690

Federal Supply Class:
5305

National Item Identification Number:
001518690

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:
AS108-04-1384256AVIBANK MFG., INC.
CA2630-041329372HOWMET GLOBAL FASTENING SYSTEMS INC.
GB511AE3-04-1326512NORTHROP GRUMMAN SYSTEMS CORPORATION
VP119-4-1392215HOWMET GLOBAL FASTENING SYSTEMS INC


Techincal Specification:
GRIP LENGTH0.812 INCHES MINIMUM AND 0.828 INCHES MAXIMUM
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
SHANK UNTHREADED HOLE DIAMETER0.081 INCHES NOMINAL FIRST HOLE
SPECIAL FEATURESRETAINING BALLS IN SHANK
WIDTH BETWEEN FLATS0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM


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