91-170

View detailed technical data, stock status, and sourcing information for: 91-170
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-898-5860

Item Name Code

35224

Assigment Date

01/01/1962 (64 years ago)

0.275 inches nominal shank diameter, 0.436 inches nominal flange diameter, 0.250 inches nominal flange seat to disk end height, 0.688 inches nominal under flange height, 0.935 inches nominal overall height

Product Characteristics

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

Shank Diameter: 0.275 inches nominal
Flange Diameter: 0.436 inches nominal
Overall Height: 0.935 inches nominal
Flange Seat To Disk End Height: 0.250 inches nominal
Under Flange Height: 0.688 inches nominal
Seat Angle: 45.0 degrees nominal
Material: steel corrosion resisting
Style Designator: cone check

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4730-00-766-9018	No Name Available	12/16/1968

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
52A3999REVC	Valve Disk
91-170	Valve Disk
91-188	Valve Disk

FAQs

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

What is the FSCG of the NSN 4820-00-898-5860?

The FSCG of the NSN 4820-00-898-5860 is 4820

Does the NSN 4820-00-898-5860 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-898-5860 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 4820-00-898-5860 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-898-5860 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 4820-00-898-5860 was assigned to the Federal Catalog?

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