PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A18-6Ring,back-Up

Ortman Fluid Power Quincy Compressor Div Sub of Coltec Industries Inc · NSN 5365-00-850-5204 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-00-850-5204 — this item is cataloged by the U.S. Government under National Stock Number 5365-00-850-5204. Primary manufacturer part number: A18-6.
Features
  • Ring,back-Up — FSC 5365
  • 1 verified cross-reference
  • Primary manufacturer: Ortman Fluid Power Quincy Compressor Div Sub of Coltec Industries Inc
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Ring,back-Up, cataloged under National Stock Number 5365-00-850-5204, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Ortman Fluid Power Quincy Compressor Div Sub of Coltec Industries Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRing,back-Up
FSC / FSG5365 — No Item Name Available (FSG 53)
ManufacturersOrtman Fluid Power Quincy Compressor Div Sub of Coltec Industries Inc (CAGE 91940)
Technical Specifications
ParameterValue
NSN5365-00-850-5204
Primary Part NumberA18-6
Item NameRing,back-Up
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerOrtman Fluid Power Quincy Compressor Div Sub of Coltec Industries Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5940-00-113-3137MS20659-101 INTERCHANGEABLE
Terminal,lug
Sae International Dba Sae International
1615-00-134-5204206-010-442-1 INTERCHANGEABLE
Housing Part,transmission,mechan
Bell Textron Inc
4310-00-479-8856Z102 INTERCHANGEABLE
Parts Kit,compressor Unloader
Gardner Denver Inc.
3455-00-517-600358-10037 INTERCHANGEABLE
Cutter,milling,plain
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
5940-00-549-2872A18-6 INTERCHANGEABLE
Terminal,lug
Abb Installation Products Inc
5995-00-642-3049CX2491-6FT INTERCHANGEABLE
Cable Assembly,power,electrical
Joint Electronics Type Designation System
5330-00-875-4107Z102G INTERCHANGEABLE
Gasket Set
Gardner Denver Inc.
6515-01-101-0226 INTERCHANGEABLE
Surgical Pack,disposable
5962-01-159-3538728000-174 INTERCHANGEABLE
Microcircuit,linear
Raytheon Company Div Rmd Strategic
5315-01-211-1290A-186 INTERCHANGEABLE
Key,woodruff
Master Disposers Inc Dba Market-Master
Cross-Reference Index
Part NumberManufacturer
A18-6 PRIMARY Ortman Fluid Power Quincy Compressor Div Sub of Coltec Industries Inc (USA)
Related Parts
5940-00-113-3137INTERCHANGEABLE
TERMINAL,LUG
MS20659-101
1615-00-134-5204INTERCHANGEABLE
HOUSING PART,TRANSMISSION,MECHAN
206-010-442-1
4310-00-479-8856INTERCHANGEABLE
PARTS KIT,COMPRESSOR UNLOADER
Z102
3455-00-517-6003INTERCHANGEABLE
CUTTER,MILLING,PLAIN
58-10037
5940-00-549-2872INTERCHANGEABLE
TERMINAL,LUG
A18-6
5995-00-642-3049INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
CX2491-6FT
5330-00-875-4107INTERCHANGEABLE
GASKET SET
Z102G
6515-01-101-0226INTERCHANGEABLE
SURGICAL PACK,DISPOSABLE
5962-01-159-3538INTERCHANGEABLE
MICROCIRCUIT,LINEAR
728000-174
5315-01-211-1290INTERCHANGEABLE
KEY,WOODRUFF
A-186
4730-01-239-3534INTERCHANGEABLE
NUT,TUBE COUPLING
A18-6
6150-01-496-2676INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
A-186

Frequently Asked Questions

What is NSN 5365-00-850-5204?

NSN 5365-00-850-5204 is a Ring,back-Up, manufactured by Ortman Fluid Power Quincy Compressor Div Sub of Coltec Industries Inc, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-00-850-5204?

NSN 5365-00-850-5204 has 1 cross-referenced part number: A18-6 (Ortman Fluid Power Quincy Compressor Div Sub of Coltec Industries Inc).

What NSN replaces 5365-00-850-5204?

There are 12 known substitutes for 5365-00-850-5204: 5940-00-113-3137, 1615-00-134-5204, 4310-00-479-8856 and 9 more. Verify interchangeability with system specifications before substitution.

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