5306-01-270-4226, BOLT,CLOSE TOLERANCE

National Stock Number:
5306-01-270-4226

Federal Supply Class:
5306

National Item Identification Number:
012704226

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:

5306PL0713896	9009H	INSPEKTORAT WSPARCIA SIL ZBROJNYCH
J815P046A	07482	GENERAL ELECTRIC COMPANY
J815P046A	58828	CFM INTERNATIONAL INC

Techincal Specification:

EXTENDED WASHER DIAMETER	0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM
FASTENER LENGTH	1.502 INCHES MINIMUM AND 1.522 INCHES MAXIMUM
GRIP DIAMETER	0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM
GRIP LENGTH	0.807 INCHES MINIMUM AND 0.817 INCHES MAXIMUM
HEAD HEIGHT	0.328 INCHES MINIMUM AND 0.348 INCHES MAXIMUM
HEAD STYLE	DOUBLE HEXAGON EXTENDED WASHER
MATERIAL DOCUMENT AND CLASSIFICATION	INCONEL 718 CAGEC 58828 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	NICKEL ALLOY 718 OVERALL
NOMINAL THREAD DIAMETER	0.312 INCHES
PRECIOUS MATERIAL AND LOCATION	HEAD SILVER AND THREADS SILVER
PRECIOUS MATERIAL	SILVER
WIDTH BETWEEN FLATS	0.375 INCHES NOMINAL
SURFACE FINISH	32.0 MICROINCHES GRIP
SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE HEAD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MS 2410 ASSN STD SINGLE TREATMENT RESPONSE THREADS
SURFACE TREATMENT	SILVER HEAD
SURFACE TREATMENT	SILVER THREADS
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.685 INCHES MINIMUM AND 0.720 INCHES MAXIMUM
THREAD QUANTITY PER INCH	24
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)

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