Part Number
Valve Disk · OEM / vendor part number · NSN 4820-01-159-5964
| Part number | 803-2177917-4-25 |
|---|---|
| Specification family | OEM / vendor part number |
| Item name | Valve Disk |
| Unit of issue | EA |
| Cross-referenced NSN | 4820-01-159-5964 |
| Federal Supply Class (FSC) | 4820 — Valves, Nonpowered |
| Unit price (USD) | $525.69 |
| Country of origin | Türkiye (Turkey) |
| Lead time | Within 90 days of order |
| Minimum order | May apply — confirm on quote |
| Documentation | Source documentation provided on all orders |
Characteristics decoded from the federal cataloging record for this valve disk. Confirm controlling dimensions against your drawing or standard sheet before ordering.
| Material | Nickel Alloy |
|---|
Nonpowered valves and valve components.
Reading the part number. 803-2177917-4-25 is a vendor part number for this valve disk. If your documentation lists a different reference for the same item, include it on the quote and we will confirm the cross-reference.
Price in context. Across the 3 items we currently stock in FSC 4820 (Valves, Nonpowered), published unit prices run from $438.08 to $1,226.61. At $525.69, this item sits below the class median of $525.69.
Stock activity. This item has appeared once in our supplier stock feed, most recently listed 2026-08-19, with a lot quantity of 21 units. Listing activity is a practical signal of ongoing availability; confirm current stock and firm pricing on your quote.
Who orders 803-2177917-4-25. Aircraft owners and MRO shops replacing standard hardware, machine shops and OEMs filling a bill of materials, and government contractors sourcing against NSN 4820-01-159-5964. You can order by part number or by stock number — it is the same item, the same published price, and the same quote form.
Applicable standards. MIL and ANSI valve standards.
Need this part modified, or a similar part made to your print? See our U.S.-based CNC machining services and aerospace machining capability.
Country of origin: Türkiye (Turkey). Turkey is a NATO ally and a normal-trade-relations partner of the United States, and Turkish-origin end items are eligible for a wide range of U.S. federal and DLA procurements.
TAA note: Turkey is not a Trade Agreements Act (TAA) designated country, so these items are generally not eligible for TAA-covered solicitations. They are offerable under the Buy American Act and many non-TAA DLA buys. Buyers are responsible for confirming the origin requirements of their specific solicitation.
Full country-of-origin and source documentation is provided with every order. Fulfillment within 90 days of order. Minimum order may apply.
Items are supplied as stock mil-spec / commercial hardware with source documentation and country-of-origin paperwork on every order. Parts are not supplied with an FAA Form 8130-3 airworthiness tag unless expressly stated on the quote. Buyers installing hardware on certificated aircraft are responsible for acceptance under their own maintenance program, repair station procedures, or owner/operator authority.
NSN 4820-01-464-4461
NSN 4820-00-623-9541
