5306-01-043-1358, BOLT,SHEAR

National Stock Number:
5306-01-043-1358

Federal Supply Class:
5306

National Item Identification Number:
010431358

Description:
BOLT,SHEAR

Detail:
A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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. A locking feature may be incorporated in the design of the head or threads. See BOLT, MACHINE and BOLT, CLEVIS.

Manufacturer Information:

MS21250H04018

96906

MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

THREAD SERIES DESIGNATOR	UNJF
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	28
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.492 INCHES MINIMUM AND
	0.532 INCHES MAXIMUM
FASTENER LENGTH	1.627 INCHES MINIMUM AND
	1.647 INCHES MAXIMUM
MATERIAL	STEEL COMP 4140 OR
	STEEL COMP E4340 OR
	STEEL COMP 8740 OR
	STEEL COMP 6150 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR
	MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR
	MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OR
	MIL-S-8503 MIL SPEC 4TH MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND
	CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING	39.0 ROCKWELL C MINIMUM AND
	43.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH	180000 POUNDS PER SQUARE INCH
HEAD STYLE	DOUBLE HEXAGON W/HOLE
HEAD HEIGHT	0.290 INCHES MINIMUM AND
	0.310 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.302 INCHES MINIMUM AND
	0.322 INCHES MAXIMUM
EXTENDED WASHER DIAMETER	0.428 INCHES MINIMUM AND
	0.438 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.059 INCHES MINIMUM AND
	0.079 INCHES MAXIMUM
HOLE CONFIGURATION STYLE	DOUBLE HEXAGON LONGITUDINAL HOLE
HOLE TYPE	DRILLED
HOLE QUANTITY	4
HOLE DIAMETER	0.037 INCHES NOMINAL
GRIP LENGTH	1.115 INCHES MINIMUM AND
	1.135 INCHES MAXIMUM
GRIP DIAMETER	0.2485 INCHES MINIMUM AND
	0.2495 INCHES MAXIMUM
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
	32.0 MICROINCHES GRIP
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS21250H04018

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