NK1781-1

View detailed technical data, stock status, and sourcing information for: NK1781-1
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-625-8502

Item Name Code

13206

Assigment Date

03/05/1975 (51 years ago)

A cylindrical device in which the inner or outer ring turns upon a single or double row of hardened balls which roll easily between the two rings, thus minimizing friction. For items with faces specially ground for duplex mounting see bearing,ball,duplex. Excludes:bearing,ball,airframe.

0.3750 inches nominal first hole diameter, 1.4900 inches minimum and 1.4950 inches maximum flange outside diameter, 0.5000 inches minimum and 0.5010 inches maximum body inside diameter, 1.1885 inches minimum and 1.1895 inches maximum body outside diameter, 5.0000 inches nominal overall length

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Hole Diameter: 0.3750 inches nominal first
Overall Length: 5.0000 inches nominal
Body Outside Diameter: 1.1885 inches minimum and 1.1895 inches maximum
Body Inside Diameter: 0.5000 inches minimum and 0.5010 inches maximum
Flange Outside Diameter: 1.4900 inches minimum and 1.4950 inches maximum
Flange Width: 0.5000 inches nominal
Hardness Rating: 52.0 rockwell c minimum and 58.0 rockwell c maximum overall
Antirotation/Lubrication Type And Quantity: 4 hole
Style Designator: solid, external flange one end

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
NK1781	Sleeve Bushing
NK1781-1	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-00-625-8502?

The FSCG of the NSN 3120-00-625-8502 is 3120

Does the NSN 3120-00-625-8502 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-00-625-8502 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 3120-00-625-8502 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-625-8502 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 3120-00-625-8502 was assigned to the Federal Catalog?

It was assigned 51 years ago, on Wed, Mar 5, 1975