PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C178Retainer,disk,valve

Apd Cryogenics Inc · NSN 4820-00-652-7198 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-652-7198 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-652-7198. Primary manufacturer part number: C178.
Features
  • Retainer,disk,valve — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Apd Cryogenics Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Retainer,disk,valve, cataloged under National Stock Number 4820-00-652-7198, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Apd Cryogenics Inc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-652-7198
Primary Part NumberC178
Item NameRetainer,disk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerApd Cryogenics Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4320-00-555-3297C178 INTERCHANGEABLE
Ring,wearing
Circor Naval Solutions Llc Dba Warren Pumps
5905-00-705-9910381-0297-000 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5340-01-098-6921 INTERCHANGEABLE
Clamp,loop
Cross-Reference Index
Part NumberManufacturer
239K350061 Apd Cryogenics Inc (USA)
C178 PRIMARY Apd Cryogenics Inc (USA)
Related Parts
4320-00-555-3297INTERCHANGEABLE
RING,WEARING
C178
5905-00-705-9910INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
381-0297-000
5340-01-098-6921INTERCHANGEABLE
CLAMP,LOOP

Frequently Asked Questions

What is NSN 4820-00-652-7198?

NSN 4820-00-652-7198 is a Retainer,disk,valve, manufactured by Apd Cryogenics Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-652-7198?

NSN 4820-00-652-7198 has 2 cross-referenced part numbers: 239K350061 (Apd Cryogenics Inc), C178 (Apd Cryogenics Inc).

What NSN replaces 4820-00-652-7198?

There are 3 known substitutes for 4820-00-652-7198: 4320-00-555-3297, 5905-00-705-9910, 5340-01-098-6921. Verify interchangeability with system specifications before substitution.

What are the specifications of C178?

Key specifications for C178: Special Features: MATL,STEEL. 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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