MB145-5D18

View detailed technical data, stock status, and sourcing information for: MB145-5D18
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-256-4461

Item Name Code

27851

Assigment Date

06/05/1987 (39 years ago)

double hexagon head style, right-hand thread direction, 1.484 inches minimum and 1.531 inches maximum fastener length, 3a thread class, 0.349 inches minimum and 0.416 inches maximum 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: 0.349 inches minimum and 0.416 inches maximum
Fastener Length: 1.484 inches minimum and 1.531 inches maximum
Head Style: double hexagon
Head Height: 0.177 inches minimum and 0.197 inches maximum
Width Between Flats: 0.492 inches minimum and 0.502 inches maximum
Grip Diameter: 0.3115 inches minimum and 0.3120 inches maximum
Shank Unthreaded Hole Diameter: 0.076 inches minimum and 0.081 inches maximum first hole
Nominal Thread Diameter: 0.312 inches
Grip Length: 1.115 inches minimum and 1.135 inches maximum
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 125000 pounds per square inch
Distance From Head Largest Bearing Surface To Shank Hole Center: 1.356 inches minimum and 1.423 inches maximum first hole
Material: steel corrosion resisting 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
MB145-5D18	Close Tolerance Bolt
ST3M729-5D18	Close Tolerance Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-256-4461?

The FSCG of the NSN 5306-01-256-4461 is 5306

Does the NSN 5306-01-256-4461 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-256-4461 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 5306-01-256-4461 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-256-4461 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 5306-01-256-4461 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Fri, Jun 5, 1987