8T4139

View detailed technical data, stock status, and sourcing information for: 8T4139
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-364-6384

Item Name Code

01847

Assigment Date

09/23/1992 (33 years ago)

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.

hexagon head style, 25.000 millimeters nominal thread length, 18.000 millimeters nominal width between flats, 30.000 millimeters nominal fastener length, 8.000 millimeters nominal head height

Product Characteristics

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

Thread Length: 25.000 millimeters nominal
Fastener Length: 30.000 millimeters nominal
Head Style: hexagon
Head Height: 8.000 millimeters nominal
Width Between Flats: 18.000 millimeters nominal
End Item Identification: route clearance - common nsn - used on legacy buffalo and 10 other weapon systems including xea - family of medium and light tactical vehicles (fmtv); mrap buffalo mk2a2
Nominal Thread Diameter: 12.000 millimeters
Grip Length: 5.000 millimeters nominal
Thread Pitch In Millimeters: 1.750
Thread Series Designator: unc

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
8T-4139	Machine Bolt
8T4139	Machine Bolt
A00554	Machine Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-364-6384?

The FSCG of the NSN 5306-01-364-6384 is 5306

Does the NSN 5306-01-364-6384 have a Schedule B code assigned?

Yes, the Schedule B code is 8710000090

Does NSN 5306-01-364-6384 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 5306-01-364-6384 contain precious materials?

Precious metal content is unknown

Does NSN 5306-01-364-6384 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 5306-01-364-6384 was assigned to the Federal Catalog?

It was assigned 33 years ago, on Wed, Sep 23, 1992