5305-01-266-8582 SCREW,CLOSE TOLERANCE Index 5305-01-266-8584 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-266-8583

Federal Supply Class:
5305

National Item Identification Number:
012668583

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:
11839V4-10-2759563REID PRODUCTS INC.
3M1034V4-10-2776301THE BOEING COMPANY
3M1034V4-10-2792215HOWMET GLOBAL FASTENING SYSTEMS INC
HT4075V4-10-2703950NAVAL INVENTORY CONTROL POINT MECHANICSBURG
HT4075V4-10-2706950HOWMET GLOBAL FASTENING SYSTEMS INC
HT4075V4-10-2756878SPS TECHNOLOGIES, LLC
HT4075V4-10-2773197HI-SHEAR CORPORATION
HT4075V4-10-2792215HOWMET GLOBAL FASTENING SYSTEMS INC
HT4075V4-10-27L4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC


Techincal Specification:
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH1.079 INCHES MINIMUM AND 1.109 INCHES MAXIMUM
GRIP DIAMETER0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
GRIP LENGTH0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
HEAD DIAMETER0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLEHIGH-TORQUE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4928 ASSN STD 1ST MATERIAL RESPONSE AND AMS 4967 ASSN STD 2ND MATERIAL RESPONSE OVERALL
MATERIALTITANIUM ALLOY UNS R56400 OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
SPECIAL FEATURESTHD HOLE IN TOP OF HEAD 0.138-32 UNJC-3B+ THREADED HOLE 0.300 IN. MIN 0.345 IN. MAX DP; COUNTERBORE 0.145 IN. MIN LG,0.150 IN. MAX LG; 0.060 IN. WIDE IN. WIDE IN UNTHREADED SHANK; DISTANT FROM TOP OF HEAD TO BEGINNING OF INJECTION PORT 0.270
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM
THREAD QUANTITY PER INCH28
THREAD SERIES DESIGNATORUNJF


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