MS21250H08028

View detailed technical data, stock status, and sourcing information for: MS21250H08028
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-955-8278

Item Name Code

15903

Assigment Date

05/20/1966 (60 years ago)

right-hand thread direction, 3a thread class, double hexagon w/hole head style, 0.768 inches minimum and 0.808 inches maximum thread length, 2.528 inches minimum and 2.548 inches maximum 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: 0.768 inches minimum and 0.808 inches maximum
Fastener Length: 2.528 inches minimum and 2.548 inches maximum
Head Style: double hexagon w/hole
Head Height: 0.494 inches minimum and 0.514 inches maximum
Width Between Flats: 0.553 inches minimum and 0.564 inches maximum
Extended Washer Diameter: 0.818 inches minimum and 0.828 inches maximum
Extended Washer Thickness: 0.113 inches minimum and 0.133 inches maximum
Hole Diameter: 0.055 inches nominal
Grip Diameter: 0.4985 inches minimum and 0.4995 inches maximum
Single Shear Strength: 108000 pounds per square inch
Nominal Thread Diameter: 0.500 inches
Grip Length: 1.740 inches minimum and 1.760 inches maximum
Hole Quantity: 4
Hole Type: drilled
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 180000 pounds per square inch
Hardness Rating: 39.0 rockwell c minimum and 43.0 rockwell c maximum overall
Hole Configuration Style: double hexagon longitudinal hole
Material: steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 6150 or steel comp 8735 overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty2 cl2 fed spec single treatment response overall
Thread Series Designator: unjf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5306-00-043-0569	No Name Available	09/01/1991

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
MS21250H08028	Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-955-8278?

The FSCG of the NSN 5306-00-955-8278 is 5306

Does the NSN 5306-00-955-8278 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-955-8278 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 5306-00-955-8278 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-00-955-8278 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 5306-00-955-8278 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Fri, May 20, 1966