PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20 1/2-50Gasket

Cospolich Inc. · NSN 5330-01-318-4597 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-318-4597 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-318-4597. Primary manufacturer part number: 20 1/2-50.
Features
  • Gasket — FSC 5330
  • 1 verified cross-reference
  • Primary manufacturer: Cospolich Inc.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Gasket, cataloged under National Stock Number 5330-01-318-4597, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Cospolich Inc.. This item has 1 commercial cross-reference 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.

Catalog Facts
Item NameGasket
FSC / FSG5330 — No Item Name Available (FSG 53)
ManufacturersCospolich Inc. (CAGE 66682)
Technical Specifications
ParameterValue
NSN5330-01-318-4597
Primary Part Number20 1/2-50
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerCospolich Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3110-00-156-1883 INTERCHANGEABLE
Bearing,ball,thrust
1377-01-647-1411201250 INTERCHANGEABLE
Cartridge,aircraft Fire Extingui
Applied Energy Technology Corp
6685-01-723-9045201-250 INTERCHANGEABLE
Thermocouple,contact
T C Measurement and Control Inc
Cross-Reference Index
Part NumberManufacturer
20 1/2-50 PRIMARY Cospolich Inc. (USA)
Related Parts
3110-00-156-1883INTERCHANGEABLE
BEARING,BALL,THRUST
1377-01-647-1411INTERCHANGEABLE
CARTRIDGE,AIRCRAFT FIRE EXTINGUI
201250
6685-01-723-9045INTERCHANGEABLE
THERMOCOUPLE,CONTACT
201-250

Frequently Asked Questions

What is NSN 5330-01-318-4597?

NSN 5330-01-318-4597 is a Gasket, manufactured by Cospolich Inc., classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-318-4597?

NSN 5330-01-318-4597 has 1 cross-referenced part number: 20 1/2-50 (Cospolich Inc.).

What NSN replaces 5330-01-318-4597?

There are 3 known substitutes for 5330-01-318-4597: 3110-00-156-1883, 1377-01-647-1411, 6685-01-723-9045. Verify interchangeability with system specifications before substitution.

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