5306-00-139-8056

Find complete technical information, availability, and procurement data for: 5306-00-139-8056
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-139-8056

Item Name Code

27851

Assigment Date

09/10/1971 (54 years ago)

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.

7.104 inches minimum and 7.151 inches maximum fastener length, double hexagon head style, 0.257 inches nominal head height, right-hand thread direction, 3a thread class

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3a
Thread Direction: right-hand
Fastener Length: 7.104 inches minimum and 7.151 inches maximum
Head Style: double hexagon
Head Height: 0.257 inches nominal
Width Between Flats: 0.678 inches minimum and 0.689 inches maximum
Grip Diameter: 0.4360 inches minimum and 0.4370 inches maximum
Shank Unthreaded Hole Diameter: 0.106 inches nominal first hole
Nominal Thread Diameter: 0.438 inches
Grip Length: 6.625 inches nominal
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 156000 pounds per square inch
Distance From Head Largest Bearing Surface To Shank Hole Center: 6.979 inches minimum and 7.011 inches maximum first hole
Surface Finish: 32.0 microinches bearing surface of head
Surface Finish: 32.0 microinches grip
Material: steel comp h11 overall
Material Document And Classification: ams 6487 assn std single material response overall
Surface Treatment: nickel and cadmium overall
Surface Treatment Document And Classification: ams 2416 assn std all treatment responses overall
Thread Series Designator: unjf

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VS2979A07D106	Close Tolerance Bolt

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5306-00-139-8056?

The FSCG of the NSN 5306-00-139-8056 is 5306

Does the NSN 5306-00-139-8056 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-139-8056 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5306-00-139-8056 contain precious materials?

Precious metal content is unknown

Does NSN 5306-00-139-8056 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5306-00-139-8056 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Fri, Sep 10, 1971