5306-00-558-2761

Find complete technical information, availability, and procurement data for: 5306-00-558-2761
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-558-2761

Item Name Code

06666

Assigment Date

01/01/1963 (63 years ago)

0.475 inches minimum and 0.525 inches maximum thread length, 3.110 inches minimum and 3.140 inches maximum fastener length, 0.428 inches minimum and 0.438 inches maximum head diameter, right-hand thread direction, 3a thread class

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: 0.475 inches minimum and 0.525 inches maximum
Fastener Length: 3.110 inches minimum and 3.140 inches maximum
Head Diameter: 0.428 inches minimum and 0.438 inches maximum
Head Height: 0.250 inches nominal
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.250 inches
Width Across Flats: 0.188 inches minimum and 0.190 inches maximum
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 34.0 rockwell c minimum and 40.0 rockwell c maximum overall
Material: steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740 overall
Material Document And Classification: mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-8503 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6049 mil spec 5th material response 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
MS20004-42	Internal Wrenching Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-558-2761?

The FSCG of the NSN 5306-00-558-2761 is 5306

Does the NSN 5306-00-558-2761 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-558-2761 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 5306-00-558-2761 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-00-558-2761 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 5306-00-558-2761 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963