5306-01-203-8353, BOLT,SHEAR

National Stock Number:
5306-01-203-8353

Federal Supply Class:
5306

National Item Identification Number:
012038353

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:

MS21250-10020

96906

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

Techincal Specification:

EXTENDED WASHER DIAMETER	1.040 INCHES MINIMUM AND 1.050 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.150 INCHES NOMINAL
FASTENER LENGTH	2.169 INCHES NOMINAL
GRIP DIAMETER	0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM
GRIP LENGTH	1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM
HARDNESS RATING	39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.618 INCHES NOMINAL
HEAD STYLE	DOUBLE HEXAGON EXTENDED WASHER
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 8740 OR STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 6150 OVERALL
MINIMUM TENSILE STRENGTH	180000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.625 INCHES
SPECIFICATION/STANDARD DATA	96906-MS21250-10020 GOVERNMENT SPECIFICATION
WIDTH BETWEEN FLATS	0.687 INCHES MINIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.899 INCHES MINIMUM AND 0.939 INCHES MAXIMUM
THREAD QUANTITY PER INCH	18
THREAD SERIES DESIGNATOR	UNJF

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