MS21250H-04004

View detailed technical data, stock status, and sourcing information for: MS21250H-04004
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-942-2186

Item Name Code

15903

Assigment Date

12/21/1965 (60 years ago)

0.492 inches minimum thread length, right-hand thread direction, 3a thread class, double hexagon w/hole head style, 0.762 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: 0.492 inches minimum
Fastener Length: 0.762 inches nominal
Head Style: double hexagon w/hole
Head Height: 0.300 inches nominal
Width Between Flats: 0.304 inches minimum and 0.313 inches maximum
Extended Washer Diameter: 0.428 inches minimum and 0.438 inches maximum
Extended Washer Thickness: 0.069 inches nominal
Hole Diameter: 0.037 inches nominal
Grip Diameter: 0.2485 inches minimum and 0.2495 inches maximum
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.250 inches nominal
Hole Quantity: 4
Hole Type: drilled
Thread Quantity Per Inch: 28
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 8740 or steel comp e4340 or steel comp 4340 or steel comp 6150 or steel comp 4140 overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment 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
10114483	Shear Bolt
721009668800	Shear Bolt
MS21250H-04004	Shear Bolt
MS21250H04004	Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-942-2186?

The FSCG of the NSN 5306-00-942-2186 is 5306

Does the NSN 5306-00-942-2186 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-942-2186 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 5306-00-942-2186 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-00-942-2186 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 5306-00-942-2186 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Tue, Dec 21, 1965