PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3101-87-ST-CDRing,retaining

Truarc Co Llc · NSN 5325-00-778-2760 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-778-2760 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-778-2760. Primary manufacturer part number: 3101-87-ST-CD.
Features
  • Ring,retaining — FSC 5325
  • End Play Takeup: 0.020 INCHES MAXIMUM IN
  • Material: STEEL
  • Surface Treatment: CADMIUM AND CHROMATE
  • Material Document and Classification: FED STD NO. 66,AISI C1066 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material Hardness Rating: 47.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Usage Design: EXTERNAL
Applications
  • Applications requiring Steel construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-778-2760, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Truarc Co Llc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-00-778-2760
Primary Part Number3101-87-ST-CD
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerTruarc Co Llc
StatusACTIVE
End Play Takeup0.020 INCHES MAXIMUM IN
MaterialSTEEL
Surface TreatmentCADMIUM AND CHROMATE
Material Document and ClassificationFED STD NO. 66,AISI C1066 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE
Cross-Sectional Shape StyleRECTANGULAR
Material Hardness Rating47.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Usage DesignEXTERNAL
Major Thickness0.042 INCHES NOMINAL IN
Casehardening IndicatorNOT CASEHARDENED
Inside Diameter0.810 INCHES NOMINAL IN
Ring StyleEXTERNAL BOWED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3110-00-156-8218177003-34 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
3101-87-ST-CD Truarc Co Llc (USA)
129622 Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division (USA)
5101-87MD Truarc Company Llc Dba Waldes Truarc (USA)
MS16628-1087 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
5101-87-S-MD Truarc Company Llc Dba Waldes Truarc (USA)
5101-87-S-MD Rotor Clip Company, Inc. (USA)
5325PL0965972 Jednolity Indeks Materialowy - Uniform Material Index (POL)
5101-87MD Rotor Clip Company, Inc. (USA)
Related Parts
3110-00-156-8218INTERCHANGEABLE
BEARING,BALL,ANNULAR
177003-34

Frequently Asked Questions

What is NSN 5325-00-778-2760?

NSN 5325-00-778-2760 is a Ring,retaining, manufactured by Truarc Co Llc, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-778-2760?

NSN 5325-00-778-2760 has 8 cross-referenced part numbers: 3101-87-ST-CD (Truarc Co Llc), 129622 (Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division), 5101-87MD (Truarc Company Llc Dba Waldes Truarc), MS16628-1087 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 5101-87-S-MD (Truarc Company Llc Dba Waldes Truarc) and 3 more.

What NSN replaces 5325-00-778-2760?

There is 1 known substitute for 5325-00-778-2760: 3110-00-156-8218. Verify interchangeability with system specifications before substitution.

What are the specifications of 3101-87-ST-CD?

Key specifications for 3101-87-ST-CD: End Play Takeup: 0.020 INCHES MAXIMUM IN; Material: STEEL; Surface Treatment: CADMIUM AND CHROMATE; Material Document and Classification: FED STD NO. 66,AISI C1066 THRU C1090 FED STD SINGLE MATERIAL RESPONSE OR SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE. 11 total characteristics are documented in the Federal Logistics Information System.

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