The Guide,valve Stem, cataloged under National Stock Number 4810-01-067-7567, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-01-067-7567 |
| Primary Part Number | FV-20-976-2 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Automatic Switch Company Dba Asco |
| Status | ACTIVE |
| Taper Minor Diameter | 0.685 INCHES NOMINAL IN |
| Bore Counterbore | INCLUDED |
| Outside Diameter | 0.938 INCHES NOMINAL IN |
| Counterbore Depth | 0.713 INCHES NOMINAL IN |
| Counterbore Diameter | 0.490 INCHES NOMINAL IN |
| Taper Length | 0.136 INCHES NOMINAL IN |
| Bore Diameter | 0.2976 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Bore Countersink | NOT INCLUDED |
| 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-20-976-2 PRIMARY | Automatic Switch Company Dba Asco (USA) |
| AV-57-431PC22 | Automatic Switch Company Dba Asco (USA) |
| Reference | Meaning |
|---|---|
| AV-57-431 | D/9 Drawing number reference only Automatic Switch Company Dba Asco |
NSN 4810-01-067-7567 is a Guide,valve Stem, manufactured by Automatic Switch Company Dba Asco, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-067-7567 has 2 manufacturer part numbers on file: FV-20-976-2 (Automatic Switch Company Dba Asco), AV-57-431PC22 (Automatic Switch Company Dba Asco).
Key specifications for FV-20-976-2: Taper Minor Diameter: 0.685 INCHES NOMINAL IN; Overall Length: 0.841 INCHES NOMINAL IN; Bore Counterbore: INCLUDED; Outside Diameter: 0.938 INCHES NOMINAL IN. 9 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.