PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5101-56MDRing,retaining

Truarc Company Llc Dba Waldes Truarc · NSN 5325-00-205-6706 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-205-6706 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-205-6706. Primary manufacturer part number: 5101-56MD.
Features
  • Ring,retaining — FSC 5325
  • Cross-Sectional Shape Style: RECTANGULAR
  • End Play Takeup: 0.020 INCHES MAXIMUM IN
  • Material: STEEL
  • Material Document and Classification: FED STD 66 1066 THRU 1090 FED STD SINGLE MATERIAL RESPONSE
  • Surface Treatment: CADMIUM AND CHROMATE
  • Inside Diameter: 0.521 INCHES NOMINAL IN
  • Casehardening Indicator: NOT CASEHARDENED
Applications
  • Applications requiring Steel construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-205-6706, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Truarc Company Llc Dba Waldes Truarc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 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
NSN5325-00-205-6706
Primary Part Number5101-56MD
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerTruarc Company Llc Dba Waldes Truarc
StatusCANCELLED
Cross-Sectional Shape StyleRECTANGULAR
End Play Takeup0.020 INCHES MAXIMUM IN
MaterialSTEEL
Material Document and ClassificationFED STD 66 1066 THRU 1090 FED STD SINGLE MATERIAL RESPONSE
Surface TreatmentCADMIUM AND CHROMATE
Inside Diameter0.521 INCHES NOMINAL IN
Casehardening IndicatorNOT CASEHARDENED
Material Hardness Rating66.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 71.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
Usage DesignEXTERNAL
Major Thickness0.035 INCHES NOMINAL IN
Ring StyleEXTERNAL BOWED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5998-00-054-3977510156-01 INTERCHANGEABLE
Electronic Components Assembly
Cae Usa Inc.
4730-00-725-57513205-4 INTERCHANGEABLE
Coupling Half,quick Disconnect
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
Cross-Reference Index
Part NumberManufacturer
5101-56MD Truarc Company Llc Dba Waldes Truarc (USA)
3101-50-ST-CD Truarc Co Llc (USA)
5101-50-S-MD Truarc Company Llc Dba Waldes Truarc (USA)
MS16628-1056 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
5101-56 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
5998-00-054-3977INTERCHANGEABLE
ELECTRONIC COMPONENTS ASSEMBLY
510156-01
4730-00-725-5751INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
3205-4

Frequently Asked Questions

What is NSN 5325-00-205-6706?

NSN 5325-00-205-6706 is a Ring,retaining, manufactured by Truarc Company Llc Dba Waldes Truarc, classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-205-6706?

NSN 5325-00-205-6706 has 5 cross-referenced part numbers: 5101-56MD (Truarc Company Llc Dba Waldes Truarc), 3101-50-ST-CD (Truarc Co Llc), 5101-50-S-MD (Truarc Company Llc Dba Waldes Truarc), MS16628-1056 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 5101-56 (Zf Industrieantriebe Witten Gmbh).

What NSN replaces 5325-00-205-6706?

There are 2 known substitutes for 5325-00-205-6706: 5998-00-054-3977, 4730-00-725-5751. Verify interchangeability with system specifications before substitution.

What are the specifications of 5101-56MD?

Key specifications for 5101-56MD: Cross-Sectional Shape Style: RECTANGULAR; End Play Takeup: 0.020 INCHES MAXIMUM IN; Material: STEEL; Material Document and Classification: FED STD 66 1066 THRU 1090 FED STD SINGLE MATERIAL RESPONSE. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5325-00-205-6706 still in active supply?

NSN 5325-00-205-6706 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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