The Guide,valve Stem, cataloged under National Stock Number 4820-01-597-8775, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Custom Tooling Company. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Guide,valve Stem |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Custom Tooling Company (CAGE 65049) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-597-8775 |
| Primary Part Number | B11424 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Custom Tooling Company |
| Status | ACTIVE |
| 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 |
|---|---|
| B11424 PRIMARY | Custom Tooling Company (USA) |
| Reference | Meaning |
|---|---|
| D11400FF ITEM 24 | C/1 Advisory reference — outside the item-of-supply concept Dante Valve Company |
| D11400FF ITEM 24 | 5/9 Secondary reference Danco Valve Company |
| D11400FF | D/9 Drawing number reference only Danco Valve Company |
NSN 4820-01-597-8775 is a Guide,valve Stem, manufactured by Custom Tooling Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-597-8775 has 1 manufacturer part number on file: B11424 (Custom Tooling Company).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-651-0062, 4820-01-663-0880. Verify interchangeability with system specifications before substitution.
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.