PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5100-66ZDRing,retaining

Rotor Clip Company, Inc. · NSN 5325-00-282-6956 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-282-6956 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-282-6956. Primary manufacturer part number: 5100-66ZD.
Features
  • Ring,retaining — FSC 5325
  • Major Thickness: 0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
  • Inside Diameter: 0.611 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN
  • Material: STEEL
  • Surface Treatment: ZINC
  • Material Document and Classification: FED STD 66,FS1066 TO 1090 FED STD SINGLE MATERIAL RESPONSE
  • Casehardening Indicator: NOT CASEHARDENED
  • Material Hardness Rating: 66.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 71.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
Applications
  • Applications requiring Steel construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-282-6956, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rotor Clip Company, Inc.. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5325-00-282-6956
Primary Part Number5100-66ZD
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerRotor Clip Company, Inc.
StatusCANCELLED
Major Thickness0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
Inside Diameter0.611 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN
MaterialSTEEL
Surface TreatmentZINC
Material Document and ClassificationFED STD 66,FS1066 TO 1090 FED STD SINGLE MATERIAL RESPONSE
Casehardening IndicatorNOT CASEHARDENED
Material Hardness Rating66.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 71.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
Ring StyleEXTERNAL
Cross-Sectional Shape StyleRECTANGULAR
Usage DesignEXTERNAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5325-00-282-1830 INTERCHANGEABLE
Ring,retaining
Cross-Reference Index
Part NumberManufacturer
5100-66ZD Rotor Clip Company, Inc. (USA)
MS16624-2066 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-21248 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
5100-66ZD Truarc Company Llc Dba Waldes Truarc (USA)
42R2051-80 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5325-00-282-1830INTERCHANGEABLE
RING,RETAINING

Frequently Asked Questions

What is NSN 5325-00-282-6956?

NSN 5325-00-282-6956 is a Ring,retaining, manufactured by Rotor Clip Company, Inc., classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-282-6956?

NSN 5325-00-282-6956 has 5 cross-referenced part numbers: 5100-66ZD (Rotor Clip Company, Inc.), MS16624-2066 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-21248 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 5100-66ZD (Truarc Company Llc Dba Waldes Truarc), 42R2051-80 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5325-00-282-6956?

There is 1 known substitute for 5325-00-282-6956: 5325-00-282-1830. Verify interchangeability with system specifications before substitution.

What are the specifications of 5100-66ZD?

Key specifications for 5100-66ZD: Major Thickness: 0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN; Inside Diameter: 0.611 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN; Material: STEEL; Surface Treatment: ZINC. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5325-00-282-6956 still in active supply?

NSN 5325-00-282-6956 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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