PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

528P247CPRing,retaining

Treadwell Corporation (delaware) Dba Treadwell Corp · NSN 5325-00-505-0503 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-505-0503 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-505-0503. Primary manufacturer part number: 528P247CP.
Features
  • Ring,retaining — FSC 5325
  • Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
  • Criticality Code Justification: ZZZY
  • 4 verified cross-references
  • Primary manufacturer: Treadwell Corporation (delaware) Dba Treadwell Corp
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-505-0503, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Treadwell Corporation (delaware) Dba Treadwell Corp. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-00-505-0503
Primary Part Number528P247CP
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerTreadwell Corporation (delaware) Dba Treadwell Corp
StatusACTIVE
Reference Number Differentiating CharacteristicsCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3120-00-064-7687 INTERCHANGEABLE
Plate,bearing
5331-01-632-0324 INTERCHANGEABLE
O-Ring
Cross-Reference Index
Part NumberManufacturer
528P247CP Treadwell Corporation (delaware) Dba Treadwell Corp (USA)
528P247 Treadwell Corporation (delaware) Dba Treadwell Corp (USA)
MIL-STD-1330 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
528P247CP Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
3120-00-064-7687INTERCHANGEABLE
PLATE,BEARING
5331-01-632-0324INTERCHANGEABLE
O-RING

Frequently Asked Questions

What is NSN 5325-00-505-0503?

NSN 5325-00-505-0503 is a Ring,retaining, manufactured by Treadwell Corporation (delaware) Dba Treadwell Corp, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-505-0503?

NSN 5325-00-505-0503 has 4 cross-referenced part numbers: 528P247CP (Treadwell Corporation (delaware) Dba Treadwell Corp), 528P247 (Treadwell Corporation (delaware) Dba Treadwell Corp), MIL-STD-1330 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 528P247CP (Naval Inventory Control Point Mechanicsburg).

What NSN replaces 5325-00-505-0503?

There are 2 known substitutes for 5325-00-505-0503: 3120-00-064-7687, 5331-01-632-0324. Verify interchangeability with system specifications before substitution.

What are the specifications of 528P247CP?

Key specifications for 528P247CP: Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D; Criticality Code Justification: ZZZY. 2 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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