031B

View detailed technical data, stock status, and sourcing information for: 031B
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-393-3634

Item Name Code

06675

Assigment Date

01/01/1963 (63 years ago)

flat chamfer head style, 3a thread class, 0.938 inches nominal thread length, right-hand thread direction, 4.625 inches nominal fastener 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: 0.938 inches nominal
Fastener Length: 4.625 inches nominal
Head Style: flat chamfer
Head Diameter: 0.875 inches nominal
Head Height: 0.438 inches nominal
Shank Unthreaded Hole Diameter: 0.141 inches nominal first hole
First Diameter From Head: 0.490 inches nominal
Second Diameter From Head: 0.560 inches nominal
Third Diameter From Head: 0.490 inches nominal
Distance From Largest Bearing Surface Of Head To End Of First Diameter: 0.875 inches nominal
Distance From Largest Bearing Surface Of Head To End Of Second Diameter: 2.875 inches nominal
Distance From Largest Bearing Surface Of Head To End Of Third Diameter: 3.688 inches nominal
Nominal Thread Diameter: 0.562 inches
Thread Quantity Per Inch: 18
Minimum Yield Strength: 105000 pounds per square inch
Distance From Head Largest Bearing Surface To Shank Hole Center: 4.344 inches nominal first hole
Externally Relieved Body Diameter Quantity: 2
Special Features: with groove in side of head 0.188 in. w 0.094 in. deep,furnished with hex nut and cotter pin
Material: steel overall
Material Document And Classification: mil-s-890,alloy mo. 2 mil spec single material response overall
Thread Series Designator: unf

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
031B	Externally Relieved Body Bolt
156408PC40T042	Externally Relieved Body Bolt
157017PC40T042	Externally Relieved Body Bolt
157431PC40T042	Externally Relieved Body Bolt
157441PC40T042	Externally Relieved Body Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-393-3634?

The FSCG of the NSN 5306-00-393-3634 is 5306

Does the NSN 5306-00-393-3634 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-393-3634 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 5306-00-393-3634 contain precious materials?

Precious metal content is unknown

Does NSN 5306-00-393-3634 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 5306-00-393-3634 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963