5306-01-372-4031

Find complete technical information, availability, and procurement data for: 5306-01-372-4031
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-372-4031

Item Name Code

15903

Assigment Date

03/10/1993 (33 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, right-hand thread direction, 4.340 inches nominal fastener length, hexagon head style, 1.180 inches nominal thread length

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: 1.180 inches nominal
Fastener Length: 4.340 inches nominal
Head Style: hexagon
Head Height: 0.438 inches minimum and 0.453 inches maximum
Width Between Flats: 1.239 inches minimum and 1.252 inches maximum
Grip Diameter: 0.8735 inches minimum and 0.8740 inches maximum
End Item Identification: c17a serd 110056
Nominal Thread Diameter: 0.8750 inches
Grip Length: 2.880 inches nominal
Thread Quantity Per Inch: 14
Minimum Tensile Strength: 160000 pounds per square inch
Special Features: altered item made from nas6714u50:drilled shank threaded end to shank hole 0.257 to 0.267 inch: hole dia 0.110 to 0.140 inch
Material: iron alloy 660 overall
Material Document And Classification: ams 5731 assn std 1st material response or ams 5737 assn std 2nd 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
17G110017-45	Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-372-4031?

The FSCG of the NSN 5306-01-372-4031 is 5306

Does the NSN 5306-01-372-4031 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-372-4031 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 5306-01-372-4031 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-372-4031 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 5306-01-372-4031 was assigned to the Federal Catalog?

It was assigned 33 years ago, on Wed, Mar 10, 1993