1-4 20X6IN

View detailed technical data, stock status, and sourcing information for: 1-4 20X6IN
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-958-0621

Item Name Code

01847

Assigment Date

01/01/1962 (64 years ago)

2a thread class, right-hand thread direction, 5.820 inches minimum and 6.100 inches maximum fastener length, square head style, 0.750 inches minimum 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: 2a
Thread Direction: right-hand
Thread Length: 0.750 inches minimum
Fastener Length: 5.820 inches minimum and 6.100 inches maximum
Head Style: square
Head Height: 0.156 inches minimum and 0.188 inches maximum
Width Between Flats: 0.362 inches minimum and 0.375 inches maximum
Nominal Thread Diameter: 0.250 inches
Features Provided: finished head
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 60000 pounds per square inch
Hardness Rating: 70.0 rockwell b minimum and 100.0 rockwell b maximum overall
Minimum Yield Strength: 36000 pounds per square inch
Material: steel overall
Material Document And Classification: sae gr 1 assn std single material response overall
Surface Treatment: cadmium or zinc overall
Surface Treatment Document And Classification: qq-p-416 ty 2 cl 3 fed spec 1st treatment response or qq-z-325 ty 2 cl 3 fed spec 2nd treatment response overall
Thread Series Designator: unc
Nondefinitive Spec/Std Data: 1 type

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5306-00-010-9825	No Name Available	09/01/2023
5306-00-207-3296	No Name Available	04/01/1982
5306-00-655-7491	No Name Available	09/01/2023
5306-00-973-7511	No Name Available	09/01/2023

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
1-4 20X6IN	Machine Bolt
MS35355-13	Machine Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-958-0621?

The FSCG of the NSN 5306-00-958-0621 is 5306

Does the NSN 5306-00-958-0621 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-958-0621 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 5306-00-958-0621 contain precious materials?

Precious metal content is unknown

Does NSN 5306-00-958-0621 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 5306-00-958-0621 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962