PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

540-6786-002Ring,retaining

Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems · NSN 5325-00-527-9922 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-527-9922 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-527-9922. Primary manufacturer part number: 540-6786-002.
Features
  • Ring,retaining — FSC 5325
  • Casehardening Indicator: NOT CASEHARDENED
  • Outside Diameter: 1.469 INCHES NOMINAL IN
  • Material Document and Classification: QQ-C-533, COND A FED SPEC SINGLE MATERIAL RESPONSE
  • Material: COPPER ALLOY 170 OR COPPER ALLOY 172
  • Material Hardness Rating: 76.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 80.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM
  • Ring Style: STRAIGHT GAP
  • Major Thickness: 0.014 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy 170 or Copper Alloy 172 construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-527-9922, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 11 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-00-527-9922
Primary Part Number540-6786-002
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerRockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
StatusACTIVE
Casehardening IndicatorNOT CASEHARDENED
Outside Diameter1.469 INCHES NOMINAL IN
Material Document and ClassificationQQ-C-533, COND A FED SPEC SINGLE MATERIAL RESPONSE
MaterialCOPPER ALLOY 170 OR COPPER ALLOY 172
Material Hardness Rating76.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 80.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM
Ring StyleSTRAIGHT GAP
Major Thickness0.014 INCHES NOMINAL IN
Usage DesignEXTERNAL OR INTERNAL
Cross-Sectional Shape StyleRECTANGULAR
End Style90 DEGREE PARALLEL
Inside Diameter1.330 INCHES MINIMUM AND 1.345 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-011-8553 INTERCHANGEABLE
Nut,plain,hexagon
Cross-Reference Index
Part NumberManufacturer
540-6786-002 PRIMARY Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
118-553 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
Related Parts
5310-00-011-8553INTERCHANGEABLE
NUT,PLAIN,HEXAGON

Frequently Asked Questions

What is NSN 5325-00-527-9922?

NSN 5325-00-527-9922 is a Ring,retaining, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-527-9922?

NSN 5325-00-527-9922 has 2 cross-referenced part numbers: 540-6786-002 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 118-553 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).

What NSN replaces 5325-00-527-9922?

There is 1 known substitute for 5325-00-527-9922: 5310-00-011-8553. Verify interchangeability with system specifications before substitution.

What are the specifications of 540-6786-002?

Key specifications for 540-6786-002: Casehardening Indicator: NOT CASEHARDENED; Outside Diameter: 1.469 INCHES NOMINAL IN; Material Document and Classification: QQ-C-533, COND A FED SPEC SINGLE MATERIAL RESPONSE; Material: COPPER ALLOY 170 OR COPPER ALLOY 172. 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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