5306-01-308-2891

Find complete technical information, availability, and procurement data for: 5306-01-308-2891
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-308-2891

Item Name Code

15903

Assigment Date

09/27/1989 (36 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.

3a thread class, 0.660 inches minimum and 0.690 inches maximum fastener length, 0.400 inches minimum and 0.450 inches maximum thread length, right-hand thread direction, dished hexagon head style

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: 0.400 inches minimum and 0.450 inches maximum
Fastener Length: 0.660 inches minimum and 0.690 inches maximum
Head Style: dished hexagon
Head Height: 0.125 inches minimum and 0.140 inches maximum
Width Between Flats: 0.429 inches minimum and 0.439 inches maximum
Hole Diameter: 0.046 inches minimum and 0.056 inches maximum
Grip Diameter: 0.2485 inches minimum and 0.2495 inches maximum
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.240 inches minimum and 0.260 inches maximum
Hole Quantity: 3
Hole Type: drilled
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 160000 pounds per square inch
Hole Configuration Style: hexagon corners
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
Specification/Standard Data: 80205-nas6704 professional/industrial association standard

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
10350240	Shear Bolt
NAS6704HU4	Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-308-2891?

The FSCG of the NSN 5306-01-308-2891 is 5306

Does the NSN 5306-01-308-2891 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-308-2891 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 5306-01-308-2891 contain precious materials?

Precious metal content is unknown

Does NSN 5306-01-308-2891 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 5306-01-308-2891 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Wed, Sep 27, 1989