5305-01-192-1429, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-192-1429

Federal Supply Class:
5305

National Item Identification Number:
011921429

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:

3M945-12D57	76301	THE BOEING COMPANY
HT4073-12D57	73197	HI-SHEAR CORPORATION
HT4073-12D57	80539	SPS TECHNOLOGIES, LLC
HT4073-12D57	92215	HOWMET GLOBAL FASTENING SYSTEMS INC
HT4073-12D57	L4528	LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	3.999 INCHES MINIMUM AND 4.029 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH	4.124 INCHES MINIMUM AND 4.144 INCHES MAXIMUM
GRIP DIAMETER	0.7485 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM
GRIP LENGTH	3.552 INCHES MINIMUM AND 3.572 INCHES MAXIMUM
HEAD DIAMETER	1.170 INCHES MINIMUM AND 1.190 INCHES MAXIMUM
HEAD HEIGHT	0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM
HEAD STYLE	PAN NO. 2
INTERNAL DRIVE STYLE	HIGH-TORQUE
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP XM-13 OVERALL
NOMINAL THREAD DIAMETER	0.750 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM FIRST HOLE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.552 INCHES MINIMUM AND 0.592 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH	16

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