5306-01-331-7557

Find complete technical information, availability, and procurement data for: 5306-01-331-7557
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-331-7557

Item Name Code

15903

Assigment Date

12/27/1990 (35 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, 3a thread class, 2.398 inches minimum and 2.428 inches maximum fastener length, 0.513 inches minimum and 0.563 inches maximum thread length, spline extended washer 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: 0.513 inches minimum and 0.563 inches maximum
Fastener Length: 2.398 inches minimum and 2.428 inches maximum
Head Style: spline extended washer
Head Height: 0.302 inches minimum and 0.322 inches maximum
Extended Washer Diameter: 0.575 inches minimum and 0.585 inches maximum
Extended Washer Thickness: 0.035 inches minimum and 0.055 inches maximum
Grip Diameter: 0.3110 inches minimum and 0.3120 inches maximum
Head Minor Diameter: 0.383 inches minimum and 0.389 inches maximum
Nominal Thread Diameter: 0.312 inches
Grip Length: 1.865 inches minimum and 1.885 inches maximum
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 220000 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: nickel alloy 718 overall
Material Document And Classification: ams 5662 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

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FAQs

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

What is the FSCG of the NSN 5306-01-331-7557?

The FSCG of the NSN 5306-01-331-7557 is 5306

Does the NSN 5306-01-331-7557 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5306-01-331-7557 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 5306-01-331-7557 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-331-7557 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 5306-01-331-7557 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Thu, Dec 27, 1990