The Ring,retaining, cataloged under National Stock Number 5325-01-166-2576, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5325-01-166-2576
Item Name
Ring,retaining
FSC / FSG
5325 / 53 — Fastening Devices
Status
ACTIVE
Ring Style
STRAIGHT GAP
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5930-01-417-8387SKB-1925 ITEM X498/X651POSSIBLE MATCH
SWITCH,PRESSURE
Possible match (shared part number)Coffin Turbo Pump Inc
8415-01-499-549718251POSSIBLE MATCH
MAINTENANCE KIT,TOXICOLOGICAL AG
Possible match (shared part number)Saint-Gobain Performance Plastics Corp Div Coated Fabrics
1385-01-556-273918251POSSIBLE MATCH
PARTS KIT,EXPLOSIVE ORDNANCE DIS
Possible match (shared part number)Teledyne Flir Unmanned Ground Systems, Inc
6110-01-571-488318251POSSIBLE MATCH
BLOCK,CONTROL CIRCUIT
Possible match (shared part number)Vaisala Inc.
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
18251
3/2Design control — primary reference
U.S. Government activity
Related Parts
5930-01-417-8387POSSIBLE MATCH
SWITCH,PRESSURE
SKB-1925 ITEM X498/X651
8415-01-499-5497POSSIBLE MATCH
MAINTENANCE KIT,TOXICOLOGICAL AG
18251
1385-01-556-2739POSSIBLE MATCH
PARTS KIT,EXPLOSIVE ORDNANCE DIS
18251
6110-01-571-4883POSSIBLE MATCH
BLOCK,CONTROL CIRCUIT
18251
Frequently Asked Questions
What is NSN 5325-01-166-2576?
NSN 5325-01-166-2576 is a Ring,retaining, classified under FSC 5325, Fastening Devices. Status: active.
What NSN replaces 5325-01-166-2576?
4 possible matches (shared part number, not a government interchangeability claim): 5930-01-417-8387, 8415-01-499-5497, 1385-01-556-2739. Verify interchangeability with system specifications before substitution.
What are the specifications of 5325-01-166-2576?
Key specifications for 5325-01-166-2576: Ring Style: STRAIGHT GAP. 1 specification is documented in the U.S. Government catalog.
Is NSN 5325-01-166-2576 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.