PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9100784Seat,valve

Lincoln Electric Co the Harris Calorific Div · NSN 4820-01-111-8507 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-111-8507 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-111-8507. Primary manufacturer part number: 9100784.
Features
  • Seat,valve — FSC 4820
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
  • 2 verified cross-references
  • Primary manufacturer: Lincoln Electric Co the Harris Calorific Div
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-111-8507, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lincoln Electric Co the Harris Calorific Div. Government technical data includes 2 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-111-8507
Primary Part Number9100784
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLincoln Electric Co the Harris Calorific Div
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsCLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5910-01-049-4712 INTERCHANGEABLE
Capacitor,fixed,plastic Dielectr
Cross-Reference Index
Part NumberManufacturer
9100784 Lincoln Electric Co the Harris Calorific Div (USA)
9100784CP Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
5910-01-049-4712INTERCHANGEABLE
CAPACITOR,FIXED,PLASTIC DIELECTR

Frequently Asked Questions

What is NSN 4820-01-111-8507?

NSN 4820-01-111-8507 is a Seat,valve, manufactured by Lincoln Electric Co the Harris Calorific Div, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-111-8507?

NSN 4820-01-111-8507 has 2 cross-referenced part numbers: 9100784 (Lincoln Electric Co the Harris Calorific Div), 9100784CP (Naval Inventory Control Point Mechanicsburg).

What NSN replaces 4820-01-111-8507?

There is 1 known substitute for 4820-01-111-8507: 5910-01-049-4712. Verify interchangeability with system specifications before substitution.

What are the specifications of 9100784?

Key specifications for 9100784: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330. 2 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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