Product Details | CLOSE TOLERANCE BOLT

5306-01-108-6827 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.

Part Alternates: 3M334D12, 3M33-4D12, 5306-01-108-6827, 01-108-6827, 5306011086827, 011086827

Hardware and Abrasives | Bolts

Supply Group (FSG) NSN Assign. NIIN
53 03 MAR 1981 01-108-6827

Drawings & Photos | NSN 5306-01-108-6827


Cross Reference | NSN 5306-01-108-6827

Part Number Cage Code Manufacturer
3M33-4D12 76301 BOEING COMPANY, THE DBA BOEING

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Technical Data | NSN 5306-01-108-6827

Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER 0.250 INCHES
THREAD QUANTITY PER INCH 28
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.469 INCHES NOMINAL
FASTENER LENGTH 1.203 INCHES MINIMUM AND 1.250 INCHES MAXIMUM
MATERIAL IRON ALLOY 660 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLE C1 HEXAGON
HEAD HEIGHT 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM
WIDTH BETWEEN FLATS 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM
GRIP LENGTH 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM
GRIP DIAMETER 0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM
SURFACE FINISH 32.0 MICROINCHES GRIP
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER 1.046 INCHES MINIMUM AND 1.078 INCHES MAXIMUM FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER 0.074 INCHES MINIMUM AND 0.079 INCHES MAXIMUM FIRST HOLE
MANUFACTURERS CODE 76301
DESIGN CONTROL REFERENCE 3M33-4D12

Restrictions/Controls & Freight Information | NSN 5306-01-108-6827

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information