NSN 4820-00-525-2359 Repair Services

Valve Seat Overhaul, Repair, and Maintenance

MPN: 135746

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-525-2359 valve seat
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NSN 4820005252359


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AS9120B:2015 ISO 9001 Audited and Certified

FAA and EASA Part 145 Certified Repair Stations Ensuring the highest standards of quality and compliance for our clients' needs.

We specialize in the repair and refurbishment of nsn components. From mechanical assemblies to rotor blades, our comprehensive capabilities cover a wide range of NSN parts, providing cost effective solutions to extend the operational life of vital equipment.

NSN 4820-00-525-2359 has been designated as a repairable item and has been included in our capabilities catalog. If you require overhaul or repair services use the form on this page to send us your information. We will provide you with a lead time and price quote.

Repairability and Datasheet

NSN 4820-00-525-2359 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-525-2359
Categorization Parts of taps, cocks, valves and similar appliances
Repairability Code N

Approximate Weight 0.1lb
Thread Length 0.710 inches and 0.740 inches single threaded portion
Flange Diameter Between 0.360 inches and 0.370 inches
Flange Seat To Disk End Height Between 0.810 inches and 0.830 inches
Under Flange Height Between 0.850 inches and 0.900 inches
Seal Accommodation Type Grooved
Thready Qty Per Inch (tpi) 56 single threaded portion
Thread Size 0.250 inches single threaded portion
Criticality Code Justification Zzzv
Material Aluminum alloy 2024
Material Specification Qq-a-225/6, t4 federal specification single material response
Surface Treatment Anodize
Surface Treatment Specification Mil-a-8625 military specification single treatment response
Thread Series Designator Uns single threaded portion
Fsc Application Data Regulator, air pressure, aircraft cabin

Part Numbers

Part Number Company RNAAC (Repair Depot)
135746 HONEYWELL INTERNATIONAL INC SB - 645 MSSQ/MSIAPCS
135746 HONEYWELL INTERNATIONAL INC. SB - 645 MSSQ/MSIAPCS
135746 ALLIEDSIGNAL INC SB - 645 MSSQ/MSIAPCS