PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30856KDisk,valve

Griswold Industries Dba Cla-Val Co · NSN 4820-00-177-1742 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-177-1742 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-177-1742. Primary manufacturer part number: 30856K.
Features
  • Disk,valve — FSC 4820
  • Media for Which Designed: GASOLINE
  • Outside Diameter: 0.625 INCHES NOMINAL IN
  • Material: PLASTIC POLYAMIDE NYLON
  • Style Designator: PLAIN
  • Inside Diameter: 0.171 INCHES NOMINAL IN
  • 5 verified cross-references
  • Primary manufacturer: Griswold Industries Dba Cla-Val Co
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Plastic Polyamide Nylon construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-00-177-1742, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Griswold Industries Dba Cla-Val Co. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-177-1742
Primary Part Number30856K
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerGriswold Industries Dba Cla-Val Co
StatusCANCELLED
Media for Which DesignedGASOLINE
Outside Diameter0.625 INCHES NOMINAL IN
MaterialPLASTIC POLYAMIDE NYLON
Style DesignatorPLAIN
Inside Diameter0.171 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5950-00-528-106317545 INTERCHANGEABLE
Reactor
Navy, United States Department of the Spawar Dba Space and Naval Wafare Command
5950-01-236-5652C3160 INTERCHANGEABLE
Transformer,audio Frequency
Pico Electronics Inc
Cross-Reference Index
Part NumberManufacturer
30856 Griswold Industries Dba Cla-Val Co (USA)
C1939 Griswold Industries Dba Cla-Val Co (USA)
30856K PRIMARY Griswold Industries Dba Cla-Val Co (USA)
C3160 Griswold Industries Dba Cla-Val Co (USA)
C3160D Griswold Industries Dba Cla-Val Co (USA)
Related Parts
5950-00-528-1063INTERCHANGEABLE
REACTOR
17545
5950-01-236-5652INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
C3160

Frequently Asked Questions

What is NSN 4820-00-177-1742?

NSN 4820-00-177-1742 is a Disk,valve, manufactured by Griswold Industries Dba Cla-Val Co, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-177-1742?

NSN 4820-00-177-1742 has 5 cross-referenced part numbers: 30856 (Griswold Industries Dba Cla-Val Co), C1939 (Griswold Industries Dba Cla-Val Co), 30856K (Griswold Industries Dba Cla-Val Co), C3160 (Griswold Industries Dba Cla-Val Co), C3160D (Griswold Industries Dba Cla-Val Co).

What NSN replaces 4820-00-177-1742?

There are 2 known substitutes for 4820-00-177-1742: 5950-00-528-1063, 5950-01-236-5652. Verify interchangeability with system specifications before substitution.

What are the specifications of 30856K?

Key specifications for 30856K: Media for Which Designed: GASOLINE; Outside Diameter: 0.625 INCHES NOMINAL IN; Material: PLASTIC POLYAMIDE NYLON; Style Designator: PLAIN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-177-1742 still in active supply?

NSN 4820-00-177-1742 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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