MB61-5D7

View detailed technical data, stock status, and sourcing information for: MB61-5D7
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-727-5682

Item Name Code

27851

Assigment Date

03/10/2025 (1 year ago)

A flexible covering, fabricated from appropriate insulating materials, designed to reduce thermal radiation in the hot section of an engine, gas turbine, nonaircraft. See also shield, heat, nonaircraft gas turbine engine.

3a thread class, 0.441 inches minimum and 0.508 inches maximum thread length, double hexagon head style, 0.8885 inches minimum and 0.9355 inches maximum fastener length, right-hand thread direction

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: 0.441 inches minimum and 0.508 inches maximum
Fastener Length: 0.8885 inches minimum and 0.9355 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
End Item Identification: f-15ex
Nominal Thread Diameter: 0.312 inches
Grip Length: 0.4275 inches minimum and 0.4475 inches maximum
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 125000 pounds per square inch
Part Name Assigned By Controlling Agency: bolt, close tolerance - double hex head, cres (125 ksi fsu)
Material: steel comp xm-13 overall
Material Document And Classification: ams 5629 aerospace material spec std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: ams-qq-p-35 national std/spec single treatment response overall
Thread Series Designator: unjf

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BM17019-5D7	Close Tolerance Bolt
FIT7047-5D7	Close Tolerance Bolt
HP5453-5D7	Close Tolerance Bolt
MB61-5D7	Close Tolerance Bolt
PBF1253-5D7	Close Tolerance Bolt
S11-1060-5D7	Close Tolerance Bolt
ST3M453-5D7	Close Tolerance Bolt
VAL23029-5D7	Close Tolerance Bolt
VS3204-5D7	Close Tolerance Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-727-5682?

The FSCG of the NSN 5306-01-727-5682 is 5306

Does the NSN 5306-01-727-5682 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-727-5682 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 5306-01-727-5682 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-727-5682 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 5306-01-727-5682 was assigned to the Federal Catalog?

It was assigned 1 year ago, on Mon, Mar 10, 2025