5306-01-245-4068, BOLT,SHEAR

National Stock Number:
5306-01-245-4068

Federal Supply Class:
5306

National Item Identification Number:
012454068

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:

NAS6204-21D	0RFT4	MAC FASTENERS, INC.
NAS6204-21D	80205	NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
NAS6204-21D	8Z507	CALIFORNIA SCREW PRODUCTS CORP.
NAS6204-21D	A0126	LEONARDO SPA HELICOPTERS DIVISION -PRODUCTION SITE

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	1.487 INCHES MINIMUM AND 1.537 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH	1.667 INCHES MINIMUM AND 1.697 INCHES MAXIMUM
GRIP DIAMETER	0.2445 INCHES MINIMUM AND 0.2450 INCHES MAXIMUM
GRIP LENGTH	1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM
HEAD STYLE	DISHED HEXAGON
HOLE CONFIGURATION STYLE	HEXAGON CORNERS
HOLE DIAMETER	0.046 INCHES MINIMUM AND 0.056 INCHES MAXIMUM
HOLE TYPE	DRILLED
HOLE QUANTITY	3
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OR AMS6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
MINIMUM TENSILE STRENGTH	180000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.250 INCHES
SINGLE SHEAR STRENGTH	ERR-060
SHANK UNTHREADED HOLE DIAMETER	0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE
WIDTH BETWEEN FLATS	0.429 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TYPE II,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.370 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH	28

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