PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12526Seat,valve

Leroi International Inc Dba Compair Leroi · NSN 4820-01-046-0269 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-046-0269 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-046-0269. Primary manufacturer part number: 12526.
Features
  • Seat,valve — FSC 4820
  • Thread Series Designator: UNS SINGLE THREADED PORTION
  • Thread Quantity Per Inch: 24 SINGLE THREADED PORTION
  • Thread Class: 3A SINGLE THREADED PORTION A
  • Seating Surface Shape: FLAT
  • Body Inside Diameter: 0.281 INCHES NOMINAL IN
  • Thread Length: 0.141 INCHES MINIMUM AND 0.155 INCHES MAXIMUM SINGLE THREADED PORTION IN
  • Style Designator: PLAIN THREADED
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-046-0269, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Leroi International Inc Dba Compair Leroi. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-046-0269
Primary Part Number12526
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeroi International Inc Dba Compair Leroi
StatusACTIVE
Thread Series DesignatorUNS SINGLE THREADED PORTION
Thread Quantity Per Inch24 SINGLE THREADED PORTION
Thread Class3A SINGLE THREADED PORTION A
Seating Surface ShapeFLAT
Body Inside Diameter0.281 INCHES NOMINAL IN
Thread Length0.141 INCHES MINIMUM AND 0.155 INCHES MAXIMUM SINGLE THREADED PORTION IN
Style DesignatorPLAIN THREADED
MaterialCOPPER ALLOY OVERALL
Nominal Thread Size1.125 INCHES SINGLE THREADED PORTION IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-291-9639125-26 INTERCHANGEABLE
Seal,plain Encased
Dresser Industries Inc Leroi Div
6530-00-404-4045125-26 INTERCHANGEABLE
Cover,orthopedic Be
Stryker Corporation Div Use for Open Payments Only
4140-00-406-0320D201 INTERCHANGEABLE
Guard,fan
Philips Industries Inc
4820-00-431-165012526 INTERCHANGEABLE
Seat,valve
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division
5330-00-588-027712-526 INTERCHANGEABLE
Retainer,packing
Wintec Llc
5365-00-807-8280 INTERCHANGEABLE
Ring,fish Tail
5935-01-285-98856405177-6 INTERCHANGEABLE
Connector,plug,electrical
Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div
5355-01-291-828512526 INTERCHANGEABLE
Knob
Giga-Tronics Incorporated Dba Giga-Tronics
4820-01-374-300612526 INTERCHANGEABLE
Valve,regulating,system Pressure
DP Manufacturing Inc.
3040-01-436-0145A-800-12526-0401 INTERCHANGEABLE
Shaft,shouldered
B.w. Elliott Manufacturing Co., Llc
Cross-Reference Index
Part NumberManufacturer
12526 Compair Kellogg Div of Robertshaw Controls Co (USA)
12526 PRIMARY Leroi International Inc Dba Compair Leroi (USA)
Related Parts
5330-00-291-9639INTERCHANGEABLE
SEAL,PLAIN ENCASED
125-26
6530-00-404-4045INTERCHANGEABLE
COVER,ORTHOPEDIC BE
125-26
4140-00-406-0320INTERCHANGEABLE
GUARD,FAN
D201
4820-00-431-1650INTERCHANGEABLE
SEAT,VALVE
12526
5330-00-588-0277INTERCHANGEABLE
RETAINER,PACKING
12-526
5365-00-807-8280INTERCHANGEABLE
RING,FISH TAIL
5935-01-285-9885INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
6405177-6
5355-01-291-8285INTERCHANGEABLE
KNOB
12526
4820-01-374-3006INTERCHANGEABLE
VALVE,REGULATING,SYSTEM PRESSURE
12526
3040-01-436-0145INTERCHANGEABLE
SHAFT,SHOULDERED
A-800-12526-0401
3040-01-437-2271INTERCHANGEABLE
SHAFT,SHOULDERED
A-800-12526-0507
1377-01-519-4091INTERCHANGEABLE
CARTRIDGE,IMPULSE
1252-6

Frequently Asked Questions

What is NSN 4820-01-046-0269?

NSN 4820-01-046-0269 is a Seat,valve, manufactured by Leroi International Inc Dba Compair Leroi, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-046-0269?

NSN 4820-01-046-0269 has 2 cross-referenced part numbers: 12526 (Compair Kellogg Div of Robertshaw Controls Co), 12526 (Leroi International Inc Dba Compair Leroi).

What NSN replaces 4820-01-046-0269?

There are 12 known substitutes for 4820-01-046-0269: 5330-00-291-9639, 6530-00-404-4045, 4140-00-406-0320 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12526?

Key specifications for 12526: Thread Series Designator: UNS SINGLE THREADED PORTION; Thread Quantity Per Inch: 24 SINGLE THREADED PORTION; End Item Identification: RUMMAN A-10 AIRCRAFT; Overall Height: 0.168 INCHES MINIMUM AND 0.182 INCHES MAXIMUM IN. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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