5306-01-419-1365, BOLT,CLOSE TOLERANCE

National Stock Number:
5306-01-419-1365

Federal Supply Class:
5306

National Item Identification Number:
014191365

Description:
BOLT,CLOSE TOLERANCE

Detail:
An externally threaded fastener whose unthreaded portion is of a specified 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. 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. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.

Manufacturer Information:

S4928913-8-34	06725	SPS TECHNOLOGIES, LLC
S4928913-8-34	06950	HOWMET GLOBAL FASTENING SYSTEMS INC
S4928913-8-34	0K620	SEQUENCE SUPPORT SERVICES INC
S4928913-8-34	17446	HUCK INTERNATIONAL, INC
S4928913-8-34	27624	SPS TECHNOLOGIES LLC
S4928913-8-34	50945	MERCURY AEROSPACE FASTENERS INC
S4928913-8-34	88277	THE BOEING COMPANY
S4928913-8-34	96878	SEAMAN H P CO
S4928913-8-34	97928	HUCK INTL INC

Techincal Specification:

HARDNESS RATING	36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.250 INCHES MINIMUM AND 0.265 INCHES MAXIMUM
HEAD STYLE	DISHED HEXAGON
MATERIAL	STEEL COMP 4140 OVERALL OR STEEL COMP 4340 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 6150 OVERALL
PROPRIETARY CHARACTERISTICS	PACS
NOMINAL THREAD DIAMETER	0.500 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.106 INCHES MINIMUM THREADS AND 0.116 INCHES MAXIMUM THREADS
SPECIAL FEATURES	TWO HOLES IN THREADS 90 DEGREES APART
WIDTH BETWEEN FLATS	0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM
SURFACE FINISH	63.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH	63.0 MICROINCHES GRIP
SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	DPA 9.84, TYPE 1 MFR REF SINGLE TREATMENT RESPONSE PRIMARY WASHER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	DPS 9.74, TYPE 1 MFR REF SINGLE TREATMENT RESPONSE HEAD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	DPS 9.74, TYPE 1 MFR REF SINGLE TREATMENT RESPONSE THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	DPS 9.84, TYPE 1 MFR REF SINGLE TREATMENT RESPONSE GRIP
SURFACE TREATMENT	CADMIUM HEAD
SURFACE TREATMENT	CADMIUM THREADS
SURFACE TREATMENT	CHROMIUM GRIP
SURFACE TREATMENT	CHROMIUM PRIMARY WASHER
THREAD CLASS	20
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.453 INCHES NOMINAL
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNF
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	2.455 INCHES NOMINAL THREADS
FASTENER LENGTH	2.563 INCHES MINIMUM AND 2.593 INCHES MAXIMUM
GRIP DIAMETER	0.4982 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM
GRIP LENGTH	2.115 INCHES MINIMUM AND 2.135 INCHES MAXIMUM

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