PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C602Seat,valve

Hunt Valve Company, Inc. · NSN 4820-01-256-5155 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-256-5155 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-256-5155. Primary manufacturer part number: C602.
Features
  • Seat,valve — FSC 4820
  • Seating Surface Shape: FLAT
  • Material: NICKEL ALLOY OVERALL
  • 2 verified cross-references
  • Primary manufacturer: Hunt Valve Company, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-256-5155, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hunt Valve Company, Inc.. 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-256-5155
Primary Part NumberC602
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHunt Valve Company, Inc.
StatusACTIVE
Seating Surface ShapeFLAT
MaterialNICKEL ALLOY OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5365-00-374-7180 INTERCHANGEABLE
Spacer,outer Flinge
5905-00-682-1101 INTERCHANGEABLE
Resistor,fixed,composition
6105-00-713-6777 INTERCHANGEABLE
Motor,alternating Current
4720-01-192-5261 INTERCHANGEABLE
Tubing,nonmetallic
5935-01-423-1011C60-2 INTERCHANGEABLE
Connector,receptacle,electrical
Hoffman Engineering, Llc Dba Hoffman Engineering Llc
Cross-Reference Index
Part NumberManufacturer
ASIB1225E1-10-6 Pima Valve, Llc (USA)
C602 PRIMARY Hunt Valve Company, Inc. (USA)
Related Parts
5365-00-374-7180INTERCHANGEABLE
SPACER,OUTER FLINGE
5905-00-682-1101INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
6105-00-713-6777INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
4720-01-192-5261INTERCHANGEABLE
TUBING,NONMETALLIC
5935-01-423-1011INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
C60-2

Frequently Asked Questions

What is NSN 4820-01-256-5155?

NSN 4820-01-256-5155 is a Seat,valve, manufactured by Hunt Valve Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-256-5155?

NSN 4820-01-256-5155 has 2 cross-referenced part numbers: ASIB1225E1-10-6 (Pima Valve, Llc), C602 (Hunt Valve Company, Inc.).

What NSN replaces 4820-01-256-5155?

There are 5 known substitutes for 4820-01-256-5155: 5365-00-374-7180, 5905-00-682-1101, 6105-00-713-6777 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C602?

Key specifications for C602: Seating Surface Shape: FLAT; Material: NICKEL ALLOY OVERALL. 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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