PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40524-8 PIECE 19Seat,valve

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-222-0258 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-222-0258 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-222-0258. Primary manufacturer part number: 40524-8 PIECE 19.
Features
  • Seat,valve — FSC 4820
  • Material: STEEL CORROSION RESISTING SEAT
  • 3 verified cross-references
  • Primary manufacturer: Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Seat construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-222-0258, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, 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
NSN4820-01-222-0258
Primary Part Number40524-8 PIECE 19
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
MaterialSTEEL CORROSION RESISTING SEAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3455-00-224-375551-10570 INTERCHANGEABLE
Cutter,milling,end
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
3455-00-224-376351-10573 INTERCHANGEABLE
Cutter,milling,end
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
3455-00-224-376751-10574 INTERCHANGEABLE
Cutter,milling,end
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
5975-00-280-97664SSL3-4 INTERCHANGEABLE
Junction Box
Egs Electrical Group Appleton Div
2530-00-385-6985F3647 INTERCHANGEABLE
Parts Kit,hydraulic Brake Wheel
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
6240-00-401-986812-09219-01 INTERCHANGEABLE
Lamp,incandescent
Compaq Federal Llc
4820-00-723-859667-4 INTERCHANGEABLE
Valve,pressure Regu
Fisher Controls Co Inc
5950-00-904-1454722801-55 INTERCHANGEABLE
Transformer,power
Raytheon Company Div Rmd Strategic
2915-00-916-9786557061 INTERCHANGEABLE
Connector Assy,tube
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
5975-00-945-8661 INTERCHANGEABLE
Box Connector,electrical
Cross-Reference Index
Part NumberManufacturer
40524-8 PIECE 19 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
674 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40524-8 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
3455-00-224-3755INTERCHANGEABLE
CUTTER,MILLING,END
51-10570
3455-00-224-3763INTERCHANGEABLE
CUTTER,MILLING,END
51-10573
3455-00-224-3767INTERCHANGEABLE
CUTTER,MILLING,END
51-10574
5975-00-280-9766INTERCHANGEABLE
JUNCTION BOX
4SSL3-4
2530-00-385-6985INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE WHEEL
F3647
6240-00-401-9868INTERCHANGEABLE
LAMP,INCANDESCENT
12-09219-01
4820-00-723-8596INTERCHANGEABLE
VALVE,PRESSURE REGU
67-4
5950-00-904-1454INTERCHANGEABLE
TRANSFORMER,POWER
722801-55
2915-00-916-9786INTERCHANGEABLE
CONNECTOR ASSY,TUBE
557061
5975-00-945-8661INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5365-01-052-7553INTERCHANGEABLE
SPACER,SLEEVE
67-4
6240-01-107-9795INTERCHANGEABLE
LAMP,INCANDESCENT

Frequently Asked Questions

What is NSN 4820-01-222-0258?

NSN 4820-01-222-0258 is a Seat,valve, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-222-0258?

NSN 4820-01-222-0258 has 3 cross-referenced part numbers: 40524-8 PIECE 19 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 674 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40524-8 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-222-0258?

There are 12 known substitutes for 4820-01-222-0258: 3455-00-224-3755, 3455-00-224-3763, 3455-00-224-3767 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40524-8 PIECE 19?

Key specifications for 40524-8 PIECE 19: Material: STEEL CORROSION RESISTING SEAT. 1 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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