The Operating Cylinder, cataloged under National Stock Number 4810-01-058-0255, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Automatic Switch Company Dba Asco. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-01-058-0255 |
| Primary Part Number | FV-89-609-1 |
| Item Name | Operating Cylinder |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Automatic Switch Company Dba Asco |
| Status | ACTIVE |
| General Characteristics Item Description | MATL MACHINED FROM BRASS HEX BAR STOCK;1.996 IN. DIA W ACROSS FLATS;4.060 IN. LG;FIRST END 1.625-12 UN 2B RH 1.250 IN. INTERNAL THD LG;SECOND END 1.125-16 UN 2A RH 0.525 EXTERNAL THD LG A |
| 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 |
|---|---|
| FV-89-609-1 PRIMARY | Automatic Switch Company Dba Asco (USA) |
| AV-89-606-PIECE 63 | Automatic Switch Company Dba Asco (USA) |
| Reference | Meaning |
|---|---|
| 89-609-1 | C/1 Advisory reference — outside the item-of-supply concept Automatic Switch Company Dba Asco |
| AV-89-606 | D/9 Drawing number reference only Automatic Switch Company Dba Asco |
| AV-89-606-PIECE | C/1 Advisory reference — outside the item-of-supply concept Automatic Switch Company Dba Asco |
NSN 4810-01-058-0255 is a Operating Cylinder, manufactured by Automatic Switch Company Dba Asco, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-058-0255 has 2 manufacturer part numbers on file: FV-89-609-1 (Automatic Switch Company Dba Asco), AV-89-606-PIECE 63 (Automatic Switch Company Dba Asco).
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-058-0950, 4820-01-058-2171, 4820-01-058-5111. Verify interchangeability with system specifications before substitution.
Key specifications for FV-89-609-1: General Characteristics Item Description: MATL MACHINED FROM BRASS HEX BAR STOCK;1.996 IN. DIA W ACROSS FLATS;4.060 IN. LG;FIRST END 1.625-12 UN 2B RH 1.250 IN. INTERNAL THD LG;SECOND END 1.125-16 UN 2A RH 0.525 EXTERNAL THD LG A. 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.