PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6668Piston Sensing Assembly

Greno Industries, Inc. Dba Greno Industries Inc · NSN 4820-01-176-0501 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-176-0501 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-176-0501. Primary manufacturer part number: 6668.
Features
  • Piston Sensing Assembly — FSC 4820
  • General Characteristics Item Description: STAINLESS STEEL
  • 3 verified cross-references
  • Primary manufacturer: Greno Industries, Inc. Dba Greno Industries Inc
Applications
  • Flow control in piping systems
  • Water treatment infrastructure
  • Industrial process control
General Description

The Piston Sensing Assembly, cataloged under National Stock Number 4820-01-176-0501, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Greno Industries, Inc. Dba Greno Industries 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-176-0501
Primary Part Number6668
Item NamePiston Sensing Assembly
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerGreno Industries, Inc. Dba Greno Industries Inc
StatusACTIVE
General Characteristics Item DescriptionSTAINLESS STEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
2530-00-140-36841097-668 INTERCHANGEABLE
Tie Rod,steering
Wheeler Fleet Solutions, Co.
6610-00-181-62816668 INTERCHANGEABLE
Spring,pendulum
Sigma Tek, Inc.
4730-00-193-2700A733S-128CFB INTERCHANGEABLE
Nipple,pipe
American Society for Testing and Materials Dba Astm International
4510-00-478-8150 INTERCHANGEABLE
Faucet,single
4720-00-815-6354 INTERCHANGEABLE
Hose,nonmetallic
5826-00-853-73726668 INTERCHANGEABLE
Panel,module
Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit
5950-00-955-9884900266-8 INTERCHANGEABLE
Saturable Reactor
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5365-01-098-58686668-1R INTERCHANGEABLE
Spacer
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
3020-01-110-9916 INTERCHANGEABLE
Gear Cluster
6515-01-317-85026668 INTERCHANGEABLE
Cartridge Assembly,respiratory S
Bird Products Corp
Cross-Reference Index
Part NumberManufacturer
6668 PRIMARY Greno Industries, Inc. Dba Greno Industries Inc (USA)
6600 Greno Industries, Inc. Dba Greno Industries Inc (USA)
6600D33 PRIMARY Greno Industries, Inc. Dba Greno Industries Inc (USA)
Related Parts
2530-00-140-3684INTERCHANGEABLE
TIE ROD,STEERING
1097-668
6610-00-181-6281INTERCHANGEABLE
SPRING,PENDULUM
6668
4730-00-193-2700INTERCHANGEABLE
NIPPLE,PIPE
A733S-128CFB
4510-00-478-8150INTERCHANGEABLE
FAUCET,SINGLE
4720-00-815-6354INTERCHANGEABLE
HOSE,NONMETALLIC
5826-00-853-7372INTERCHANGEABLE
PANEL,MODULE
6668
5950-00-955-9884INTERCHANGEABLE
SATURABLE REACTOR
900266-8
5365-01-098-5868INTERCHANGEABLE
SPACER
6668-1R
3020-01-110-9916INTERCHANGEABLE
GEAR CLUSTER
6515-01-317-8502INTERCHANGEABLE
CARTRIDGE ASSEMBLY,RESPIRATORY S
6668
2330-01-387-5424INTERCHANGEABLE
CHASSIS,TRAILER
12450001

Frequently Asked Questions

What is NSN 4820-01-176-0501?

NSN 4820-01-176-0501 is a Piston Sensing Assembly, manufactured by Greno Industries, Inc. Dba Greno Industries Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-176-0501?

NSN 4820-01-176-0501 has 3 cross-referenced part numbers: 6668 (Greno Industries, Inc. Dba Greno Industries Inc), 6600 (Greno Industries, Inc. Dba Greno Industries Inc), 6600D33 (Greno Industries, Inc. Dba Greno Industries Inc).

What NSN replaces 4820-01-176-0501?

There are 11 known substitutes for 4820-01-176-0501: 2530-00-140-3684, 6610-00-181-6281, 4730-00-193-2700 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6668?

Key specifications for 6668: General Characteristics Item Description: STAINLESS 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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