The Detent,piston, cataloged under National Stock Number 1020-01-175-0063, is classified within Federal Supply Class 1020 (Guns, Over 125mm Through 150mm) of the Weapons group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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 | 1020-01-175-0063 |
| Primary Part Number | 2545229 |
| Item Name | Detent,piston |
| FSC / FSG | 1020 / 10 — Guns, Over 125mm Through 150mm |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| General Characteristics Item Description | MATERIAL STEEL 4140 SUB OD8853 TYPE D GRADE 1 CLASS C,ALT QQ-S-624,4140,LENGTH 0.812 IN.,DIA 0.531,HEAT TREAT TO 40-45 ROCKWELL-C IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2545229 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 1020-01-175-0063 is a Detent,piston, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1020, Guns, Over 125mm Through 150mm. Status: active.
NSN 1020-01-175-0063 has 1 manufacturer part number on file: 2545229 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-492-5547. Verify interchangeability with system specifications before substitution.
Key specifications for 2545229: General Characteristics Item Description: MATERIAL STEEL 4140 SUB OD8853 TYPE D GRADE 1 CLASS C,ALT QQ-S-624,4140,LENGTH 0.812 IN.,DIA 0.531,HEAT TREAT TO 40-45 ROCKWELL-C IN. 1 specification is 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.