5306-01-256-6851

Find complete technical information, availability, and procurement data for: 5306-01-256-6851
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-256-6851

Item Name Code

15903

Assigment Date

06/08/1987 (39 years ago)

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.

right-hand thread direction, dished hexagon head style, 1.284 inches minimum and 1.334 inches maximum thread length, 3.044 inches minimum and 3.074 inches maximum fastener length, 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
Thread Length: 1.284 inches minimum and 1.334 inches maximum
Fastener Length: 3.044 inches minimum and 3.074 inches maximum
Head Style: dished hexagon
Head Height: 0.500 inches minimum and 0.515 inches maximum
Width Between Flats: 1.427 inches minimum and 1.440 inches maximum
Grip Diameter: 0.9980 inches minimum and 0.9990 inches maximum
Nominal Thread Diameter: 1.000 inches
Grip Length: 1.740 inches minimum and 1.760 inches maximum
Thread Quantity Per Inch: 12
Minimum Tensile Strength: 180000 pounds per square inch
Surface Finish: 32.0 microinches bearing surface of head
Surface Finish: 32.0 microinches grip
Surface Finish: 32.0 microinches threads
Material: iron alloy 660 overall
Material Document And Classification: ams5731 assn std single material response or ams5737 assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unjf

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
NAS1966C28	Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-256-6851?

The FSCG of the NSN 5306-01-256-6851 is 5306

Does the NSN 5306-01-256-6851 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-256-6851 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 5306-01-256-6851 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-256-6851 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 5306-01-256-6851 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Mon, Jun 8, 1987