5306-01-417-8581, BOLT,SHEAR

National Stock Number:
5306-01-417-8581

Federal Supply Class:
5306

National Item Identification Number:
014178581

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:

MS21297-20034

96906

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

Techincal Specification:

EXTENDED WASHER DIAMETER	0.170 INCHES MINIMUM AND 0.190 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.170 INCHES MINIMUM AND 0.190 INCHES MAXIMUM
FASTENER LENGTH	3.960 INCHES MINIMUM AND 3.990 INCHES MAXIMUM
GRIP DIAMETER	1.2475 INCHES MINIMUM AND 1.2490 INCHES MAXIMUM
GRIP LENGTH	2.115 INCHES MINIMUM AND 2.135 INCHES MAXIMUM
HARDNESS RATING	46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM
HEAD MINOR DIAMETER	1.360 INCHES MINIMUM AND 1.375 INCHES MAXIMUM
HEAD STYLE	SPLINE EXTENDED WASHER
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP H11 OVERALL
MINIMUM TENSILE STRENGTH	220000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	1.250 INCHES
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH	32.0 MICROINCHES GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-8837, TYPE 2, CLASS 2 MIL SPEC ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.836 INCHES MINIMUM
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH	12

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