PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T-111Seat,valve

Ametek Inc · NSN 4820-01-181-0125 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-181-0125 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-181-0125. Primary manufacturer part number: T-111.
Features
  • Seat,valve — FSC 4820
  • Material: STEEL OVERALL
  • 1 verified cross-reference
  • Primary manufacturer: Ametek Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-181-0125, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Ametek Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-181-0125
Primary Part NumberT-111
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAmetek Inc
StatusACTIVE
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5950-00-041-2219 INTERCHANGEABLE
Transformer,audio Frequency
5220-00-044-2767T111 INTERCHANGEABLE
Gage,profile
Compair, Inc
5950-00-084-8910 INTERCHANGEABLE
Transformer,power
3010-00-439-8170T11-1 INTERCHANGEABLE
Coupling,shaft,flexible
Roller Bearing Co of America, Inc Div Pic Design
5136-01-028-4312T111 INTERCHANGEABLE
Tap,thread Cutting
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
3510-01-044-8025 INTERCHANGEABLE
Pad,laundry Press,commercial
7035-01-391-7470 INTERCHANGEABLE
Transmitter,digital Data
5355-01-459-6696T111 INTERCHANGEABLE
Knob
Unertl John Optical Co Inc
Cross-Reference Index
Part NumberManufacturer
T-111 PRIMARY Ametek Inc (USA)
Related Parts
5950-00-041-2219INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5220-00-044-2767INTERCHANGEABLE
GAGE,PROFILE
T111
5950-00-084-8910INTERCHANGEABLE
TRANSFORMER,POWER
3010-00-439-8170INTERCHANGEABLE
COUPLING,SHAFT,FLEXIBLE
T11-1
5136-01-028-4312INTERCHANGEABLE
TAP,THREAD CUTTING
T111
3510-01-044-8025INTERCHANGEABLE
PAD,LAUNDRY PRESS,COMMERCIAL
7035-01-391-7470INTERCHANGEABLE
TRANSMITTER,DIGITAL DATA
5355-01-459-6696INTERCHANGEABLE
KNOB
T111

Frequently Asked Questions

What is NSN 4820-01-181-0125?

NSN 4820-01-181-0125 is a Seat,valve, manufactured by Ametek Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-181-0125?

NSN 4820-01-181-0125 has 1 cross-referenced part number: T-111 (Ametek Inc).

What NSN replaces 4820-01-181-0125?

There are 8 known substitutes for 4820-01-181-0125: 5950-00-041-2219, 5220-00-044-2767, 5950-00-084-8910 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T-111?

Key specifications for T-111: Material: STEEL OVERALL. 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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