D139-4-943

View detailed technical data, stock status, and sourcing information for: D139-4-943
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-411-1256

Item Name Code

05489

Assigment Date

03/17/1995 (31 years ago)

An item designed to be mounted around a shaft to limit axial movement of the shaft and/or its assembled parts. It is secured directly to the shaft by use of a setscrew(s), pin(s), or the like, which may be a part of the item of supply. A pilot hole drilled in or through the wall(s) for drilling and pinning at application may be considered a method of securing. Solid items have a bearing surface on one or both end(s) perpendicular to the axis. For items designed to be mounted around the extended hub portion of a mounted item on a shaft or clamp around a shaft, see clamp, hub. See also bearing, sleeve; bushing, sleeve; spacer, sleeve; and coupling, shaft, rigid.

4.000 inches all ends nominal pipe size accommodated, 200.0 pounds per square inch single response maximum operating pressure, butt weld pipe all ends connection type

Product Characteristics

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

Nominal Pipe Size Accommodated: 4.000 inches all ends
Connection Type: butt weld pipe all ends
Maximum Operating Pressure: 200.0 pounds per square inch single response

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
943-703-040-139-050	Butterfly Valve
D139-4-943	Butterfly Valve

FAQs

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

What is the FSCG of the NSN 4820-01-411-1256?

The FSCG of the NSN 4820-01-411-1256 is 4820

Does NSN 4820-01-411-1256 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 4820-01-411-1256 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-411-1256 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 4820-01-411-1256 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Fri, Mar 17, 1995