PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1219-3175-C3YLock Spring,turnlock Fastener

Southco Inc · NSN 5325-00-823-5639 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-823-5639 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-823-5639. Primary manufacturer part number: 1219-3175-C3Y.
Features
  • Lock Spring,turnlock Fastener — FSC 5325
  • 15 verified cross-references
  • Primary manufacturer: Southco Inc
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Lock Spring,turnlock Fastener, cataloged under National Stock Number 5325-00-823-5639, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Southco Inc. This item has 15 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameLock Spring,turnlock Fastener
FSC / FSG5325 — No Item Name Available (FSG 53)
ManufacturersSouthco Inc (CAGE 72794); Electro Switch Corp. Dba Electro Switch Corp Div Digitran a Unit of Electro Switch (CAGE 07126); Peraton Inc (CAGE 0C9D4); Ge Aviation Systems Llc Dba Ge Aviation (CAGE 058R3); Northrop Grumman Systems Corporation (CAGE 26512)
Technical Specifications
ParameterValue
NSN5325-00-823-5639
Primary Part Number1219-3175-C3Y
Item NameLock Spring,turnlock Fastener
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerSouthco Inc
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5325-00-171-4680 INTERCHANGEABLE
Lock Spring,turnlock Fastener
Cross-Reference Index
Part NumberManufacturer
S3-175CADPL Southco Inc (USA)
S3-175C Southco Inc (USA)
S3-175 CIY Southco Inc (USA)
S3-175 Electro Switch Corp. Dba Electro Switch Corp Div Digitran a Unit of Electro Switch (USA)
1219-3175-C3Y PRIMARY Southco Inc (USA)
SCD51990252-001 Peraton Inc (USA)
S3-175-8P Southco Inc (USA)
006705-2 Ge Aviation Systems Llc Dba Ge Aviation (USA)
GS580DA6-18 Northrop Grumman Systems Corporation (USA)
012100300 Southco Inc (USA)
S3-175 I8 Southco Inc (USA)
012-1003-00 Alcatel-Lucent Holdings Inc. (USA)
012-1003-000 PRIMARY Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
006705-2 Ge Aviation Systems Llc Dba Ge Aviation Systems Llc (USA)
006705-2 Ge Aviation Systems Llc (USA)
Related Parts
5325-00-171-4680INTERCHANGEABLE
LOCK SPRING,TURNLOCK FASTENER

Frequently Asked Questions

What is NSN 5325-00-823-5639?

NSN 5325-00-823-5639 is a Lock Spring,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-823-5639?

NSN 5325-00-823-5639 has 15 cross-referenced part numbers: S3-175CADPL (Southco Inc), S3-175C (Southco Inc), S3-175 CIY (Southco Inc), S3-175 (Electro Switch Corp. Dba Electro Switch Corp Div Digitran a Unit of Electro Switch), 1219-3175-C3Y (Southco Inc) and 10 more.

What NSN replaces 5325-00-823-5639?

There is 1 known substitute for 5325-00-823-5639: 5325-00-171-4680. Verify interchangeability with system specifications before substitution.

Is NSN 5325-00-823-5639 still in active supply?

NSN 5325-00-823-5639 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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