AN6H55

View detailed technical data, stock status, and sourcing information for: AN6H55
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-014-4222

Item Name Code

01847

Assigment Date

12/23/1975 (50 years ago)

3a thread class, right-hand thread direction, 0.609 inches minimum and 0.686 inches maximum thread length, 5.687 inches minimum and 5.734 inches maximum fastener length, hexagon head style

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: 0.609 inches minimum and 0.686 inches maximum
Fastener Length: 5.687 inches minimum and 5.734 inches maximum
Head Style: hexagon
Head Height: 0.203 inches minimum and 0.235 inches maximum
Width Between Flats: 0.553 inches minimum and 0.565 inches maximum
Hole Diameter: 0.075 inches nominal
Shank Unthreaded Hole Diameter: 0.106 inches minimum and 0.116 inches maximum first hole
Nominal Thread Diameter: 0.375 inches
Grip Length: 5.048 inches minimum and 5.078 inches maximum
Hole Quantity: 1
Hole Type: drilled
Features Provided: finished head
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 125000 pounds per square inch
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum overall
Hole Configuration Style: hexagon flats
Distance From Head Largest Bearing Surface To Shank Hole Center: 5.486 inches minimum and 5.516 inches maximum first hole
Material: steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4037 or steel comp 4140 or steel comp 4130 overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty2 cl3 fed spec single treatment response overall
Thread Series Designator: unf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5306-00-637-9166	Machine Bolt	07/01/2025

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
AN6H55	Machine Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-014-4222?

The FSCG of the NSN 5306-01-014-4222 is 5306

Does the NSN 5306-01-014-4222 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-014-4222 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 5306-01-014-4222 contain precious materials?

Precious metal content is unknown

Does NSN 5306-01-014-4222 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 5306-01-014-4222 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Tue, Dec 23, 1975