The Ring,externally Threaded, cataloged under National Stock Number 5365-00-129-6512, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-00-129-6512 |
| Primary Part Number | 1558861 |
| Item Name | Ring,externally Threaded |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Bore Annular Internal Serration | NOT INCLUDED |
| Beveled Thread | NOT INCLUDED |
| Chamfer Length | 0.057 INCHES NOMINAL IN |
| Drive Type | SLOTTED FACE |
| Process End Location | END OPPOSITE DRIVE END |
| Setscrew Locking Notch | NOT INCLUDED |
| Accommodation Type and Quantity | 4 SLOTS |
| Casehardening Indicator | NOT CASEHARDENED |
| Angle Between Accommodations in Deg | 90.0 |
| Thread Size | 2-7/8 IN.-12N THD SIZE IN |
| Screw Thread Series Designator | NS |
| Chamfer Angle in Deg | 40.0 |
| Depth | 0.188 INCHES NOMINAL IN |
| Width | 0.250 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Bore Diameter | 2.187 INCHES NOMINAL IN |
| Material | COPPER ALLOY 485 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5365-00-129-6512 is a Ring,externally Threaded, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-00-129-6512 has 2 manufacturer part numbers on file: 1558861 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 1558661 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-344-3467. Verify interchangeability with system specifications before substitution.
Key specifications for 1558861: Bore Annular Internal Serration: NOT INCLUDED; Beveled Thread: NOT INCLUDED; Chamfer Length: 0.057 INCHES NOMINAL IN; Drive Type: SLOTTED FACE. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.