PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30-178Ring,wearing

Hardie-Tynes Co., Inc. · NSN 4320-00-349-6587 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-349-6587 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-349-6587. Primary manufacturer part number: 30-178.
Features
  • Ring,wearing — FSC 4320
  • Corner Shape: SQUARE ALL CORNERS
  • Material: STEEL
  • Body Outside Diameter: 2.609 INCHES NOMINAL IN
  • Body Style: EXTERNAL FLANGE
  • Flange Diameter: 2.953 INCHES NOMINAL IN
  • Body Inside Diameter: 2.000 INCHES NOMINAL IN
  • Left Side Flange Thickness: 0.375 INCHES NOMINAL IN
Applications
  • Applications requiring Steel construction
General Description

The Ring,wearing, cataloged under National Stock Number 4320-00-349-6587, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Hardie-Tynes Co., Inc.. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-349-6587
Primary Part Number30-178
Item NameRing,wearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerHardie-Tynes Co., Inc.
StatusACTIVE
Corner ShapeSQUARE ALL CORNERS
MaterialSTEEL
Body Outside Diameter2.609 INCHES NOMINAL IN
Body StyleEXTERNAL FLANGE
Flange Diameter2.953 INCHES NOMINAL IN
Body Inside Diameter2.000 INCHES NOMINAL IN
Left Side Flange Thickness0.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
1730-00-003-0749P27-0543 INTERCHANGEABLE
Cover,spray Unit
Donaldson Company, Inc.
4730-00-447-405730178 INTERCHANGEABLE
Packing Nut
Brinkley Technology Group Llc Dba Hercules Manufacturing
3820-00-617-797530178 INTERCHANGEABLE
Hopper,conveyor
Eagle Crusher Co Inc Dba Stedman Machine Co
5962-01-045-54363713 INTERCHANGEABLE
Microcircuit,digital
Data Device Corp Dba Beta Transformer Technology
5940-01-069-8914 INTERCHANGEABLE
Splice,conductor
5315-01-199-701330178 INTERCHANGEABLE
Pin,hollow
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5365-01-243-728130178 INTERCHANGEABLE
Ring Special
Leupold & Stevens Inc
4820-01-254-488230178 INTERCHANGEABLE
Valve,safety Relief
Danuser Machine Co
1005-01-623-891430178 INTERCHANGEABLE
Suppressor,small Arms Weapon
Charles Reed Knight Jr Dba Knight's Armament Company
Cross-Reference Index
Part NumberManufacturer
30-178 Hardie-Tynes Co., Inc. (USA)
Related Parts
1730-00-003-0749INTERCHANGEABLE
COVER,SPRAY UNIT
P27-0543
4730-00-447-4057INTERCHANGEABLE
PACKING NUT
30178
3820-00-617-7975INTERCHANGEABLE
HOPPER,CONVEYOR
30178
5962-01-045-5436INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
3713
5940-01-069-8914INTERCHANGEABLE
SPLICE,CONDUCTOR
5315-01-199-7013INTERCHANGEABLE
PIN,HOLLOW
30178
5365-01-243-7281INTERCHANGEABLE
RING SPECIAL
30178
4820-01-254-4882INTERCHANGEABLE
VALVE,SAFETY RELIEF
30178
1005-01-623-8914INTERCHANGEABLE
SUPPRESSOR,SMALL ARMS WEAPON
30178

Frequently Asked Questions

What is NSN 4320-00-349-6587?

NSN 4320-00-349-6587 is a Ring,wearing, manufactured by Hardie-Tynes Co., Inc., classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-349-6587?

NSN 4320-00-349-6587 has 1 cross-referenced part number: 30-178 (Hardie-Tynes Co., Inc.).

What NSN replaces 4320-00-349-6587?

There are 9 known substitutes for 4320-00-349-6587: 1730-00-003-0749, 4730-00-447-4057, 3820-00-617-7975 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 30-178?

Key specifications for 30-178: Corner Shape: SQUARE ALL CORNERS; Material: STEEL; Body Outside Diameter: 2.609 INCHES NOMINAL IN; Body Style: EXTERNAL FLANGE. 8 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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