PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RRT56SRing,retaining

Spirolox Inc · NSN 5325-00-200-2666 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-200-2666 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-200-2666. Primary manufacturer part number: RRT56S.
Features
  • Ring,retaining — FSC 5325
  • Material: STEEL COMP 302
  • Material Document and Classification: AISI 302 ASSN STD SINGLE MATERIAL RESPONSE
  • Outside Diameter: 0.597 INCHES MINIMUM AND 0.602 INCHES MAXIMUM IN
  • Inside Diameter: 0.507 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: DOUBLE OVAL
  • Casehardening Indicator: NOT CASEHARDENED
  • Major Thickness: 0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
Applications
  • Applications requiring Steel Comp 302 construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-200-2666, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Spirolox Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN5325-00-200-2666
Primary Part NumberRRT56S
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerSpirolox Inc
StatusCANCELLED
MaterialSTEEL COMP 302
Material Document and ClassificationAISI 302 ASSN STD SINGLE MATERIAL RESPONSE
Outside Diameter0.597 INCHES MINIMUM AND 0.602 INCHES MAXIMUM IN
Inside Diameter0.507 INCHES NOMINAL IN
Cross-Sectional Shape StyleDOUBLE OVAL
Casehardening IndicatorNOT CASEHARDENED
Major Thickness0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
Usage DesignINTERNAL
Ring StyleSPECIAL FLAT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5930-01-097-442721854-5 INTERCHANGEABLE
Switch,code Indicating Wheel
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
5340-01-184-78418P7065 INTERCHANGEABLE
Button,plug
Caterpillar Inc Div Caterpillar Defense
Cross-Reference Index
Part NumberManufacturer
RRT56S PRIMARY Spirolox Inc (USA)
218545 PRIMARY Woodward, Inc. Div Fuel Systems and Controls (USA)
Related Parts
5930-01-097-4427INTERCHANGEABLE
SWITCH,CODE INDICATING WHEEL
21854-5
5340-01-184-7841INTERCHANGEABLE
BUTTON,PLUG
8P7065

Frequently Asked Questions

What is NSN 5325-00-200-2666?

NSN 5325-00-200-2666 is a Ring,retaining, manufactured by Spirolox Inc, classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-200-2666?

NSN 5325-00-200-2666 has 2 cross-referenced part numbers: RRT56S (Spirolox Inc), 218545 (Woodward, Inc. Div Fuel Systems and Controls).

What NSN replaces 5325-00-200-2666?

There are 2 known substitutes for 5325-00-200-2666: 5930-01-097-4427, 5340-01-184-7841. Verify interchangeability with system specifications before substitution.

What are the specifications of RRT56S?

Key specifications for RRT56S: Material: STEEL COMP 302; Material Document and Classification: AISI 302 ASSN STD SINGLE MATERIAL RESPONSE; Outside Diameter: 0.597 INCHES MINIMUM AND 0.602 INCHES MAXIMUM IN; Inside Diameter: 0.507 INCHES NOMINAL IN. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5325-00-200-2666 still in active supply?

NSN 5325-00-200-2666 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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