MB155-5D12

View detailed technical data, stock status, and sourcing information for: MB155-5D12
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-239-0583

Item Name Code

27851

Assigment Date

08/25/1986 (39 years ago)

A headless fastener not exceeding 12 inches (304.8 mm) in length, threaded externally on both ends with threads of the same nominal diameter. The maximum diameter of the unthreaded portion must not be greater than the nominal thread diameter plus 0.020 inches (0.508 mm). The unthreaded portion must be without locking or wrenching provisions. It may be thread relieved. See also rod, threaded end and rod, continuous thread.

1.202 inches minimum and 1.232 inches maximum fastener length, spline drive shear head head style, right-hand thread direction, 3a thread class, 0.442 inches minimum and 0.492 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: 0.442 inches minimum and 0.492 inches maximum
Fastener Length: 1.202 inches minimum and 1.232 inches maximum
Head Style: spline drive shear head
Head Height: 0.177 inches minimum and 0.197 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
Head Minor Diameter: 0.512 inches minimum
Nominal Thread Diameter: 0.312 inches
Grip Length: 0.740 inches minimum and 0.760 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: 1.078 inches minimum and 1.118 inches maximum first hole
Surface Finish: 32.0 microinches bearing surface of head
Surface Finish: 32.0 microinches grip
Surface Finish: 32.0 microinches threads
Material: steel comp xm-13 overall
Material Document And Classification: ams 5629 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

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
122896-5D12	Close Tolerance Bolt
AIC688-5D12	Close Tolerance Bolt
GS1031-5D12	Close Tolerance Bolt
MB155-5D12	Close Tolerance Bolt
PBF1266-5D12	Close Tolerance Bolt
S397-5D12	Close Tolerance Bolt
SLB254-5D12	Close Tolerance Bolt
ST3M747-5012	Close Tolerance Bolt
VCG0002-5D12	Close Tolerance Bolt
VS3191-5D12	Close Tolerance Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-239-0583?

The FSCG of the NSN 5306-01-239-0583 is 5306

Does the NSN 5306-01-239-0583 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-239-0583 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 5306-01-239-0583 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-239-0583 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 5306-01-239-0583 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Mon, Aug 25, 1986