PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4IN. ID X 7/8IN.CSRing,connecting,round

Naval Inventory Control Point Mechanicsburg · NSN 5365-01-036-7243 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-01-036-7243 — this item is cataloged by the U.S. Government under National Stock Number 5365-01-036-7243. Primary manufacturer part number: 4IN. ID X 7/8IN.CS.
Features
  • Ring,connecting,round — FSC 5365
  • Stock Size: 0.875 IN. DIA. IN
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
  • Construction: ENDLESS
  • Criticality Code Justification: ZZZY
  • Material: STEEL CORROSION RESISTING
  • Inside Diameter: 4.000 INCHES NOMINAL IN
  • 4 verified cross-references
Applications
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Ring,connecting,round, cataloged under National Stock Number 5365-01-036-7243, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, 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
NSN5365-01-036-7243
Primary Part Number4IN. ID X 7/8IN.CS
Item NameRing,connecting,round
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Stock Size0.875 IN. DIA. IN
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
ConstructionENDLESS
Criticality Code JustificationZZZY
MaterialSTEEL CORROSION RESISTING
Inside Diameter4.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
4310-00-060-4586 INTERCHANGEABLE
Ring,piston
5940-00-115-2676MS20659-143 INTERCHANGEABLE
Terminal,lug
Sae International Dba Sae International
3940-00-235-84534080517 INTERCHANGEABLE
Link,hoisting
Textron Aviation Inc
5305-00-639-8085S643 INTERCHANGEABLE
Screw,cap,socket Head
Bae Systems Land & Armaments L.p.
5365-01-056-834111153730 INTERCHANGEABLE
Ring,connecting,round
Us Army Aviation and Missile Command
5365-01-227-9457521-4788614 ITEM 114 INTERCHANGEABLE
Ring,connecting,round
Naval Ship Systems Command
4730-01-251-221913228E2595-67 INTERCHANGEABLE
Plug,pipe
Cecom Lr Center
5360-01-481-9878S-643 INTERCHANGEABLE
Spring,helical,extension
Matthew Warren, Inc. Dba Century Spring Corp. Div Century Spring Corp.
5325-01-557-9361S643 INTERCHANGEABLE
Ring,retaining
Palfinger Marine Usa, Llc
Cross-Reference Index
Part NumberManufacturer
4IN. ID X 7/8IN.CS Naval Inventory Control Point Mechanicsburg (USA)
S-643 The Crosby Group Llc Dba the Crosby Group (USA)
250-2581458 PC 8 Naval Ship Systems Command (USA)
49917-48X2 PC 8 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
Related Parts
4310-00-060-4586INTERCHANGEABLE
RING,PISTON
5940-00-115-2676INTERCHANGEABLE
TERMINAL,LUG
MS20659-143
3940-00-235-8453INTERCHANGEABLE
LINK,HOISTING
4080517
5305-00-639-8085INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
S643
5365-01-056-8341INTERCHANGEABLE
RING,CONNECTING,ROUND
11153730
5365-01-227-9457INTERCHANGEABLE
RING,CONNECTING,ROUND
521-4788614 ITEM 114
4730-01-251-2219INTERCHANGEABLE
PLUG,PIPE
13228E2595-67
5360-01-481-9878INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
S-643
5325-01-557-9361INTERCHANGEABLE
RING,RETAINING
S643

Frequently Asked Questions

What is NSN 5365-01-036-7243?

NSN 5365-01-036-7243 is a Ring,connecting,round, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-01-036-7243?

NSN 5365-01-036-7243 has 4 cross-referenced part numbers: 4IN. ID X 7/8IN.CS (Naval Inventory Control Point Mechanicsburg), S-643 (The Crosby Group Llc Dba the Crosby Group), 250-2581458 PC 8 (Naval Ship Systems Command), 49917-48X2 PC 8 (Electric Boat Corporation Div General Dynamics Electric Boat).

What NSN replaces 5365-01-036-7243?

There are 9 known substitutes for 5365-01-036-7243: 4310-00-060-4586, 5940-00-115-2676, 3940-00-235-8453 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4IN. ID X 7/8IN.CS?

Key specifications for 4IN. ID X 7/8IN.CS: Stock Size: 0.875 IN. DIA. IN; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS; Construction: ENDLESS; Criticality Code Justification: ZZZY. 6 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com