The Disk,valve, cataloged under National Stock Number 4820-01-172-8335, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tate Andale, Llc. Government technical data includes 5 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. 2 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 | 4820-01-172-8335 |
| Primary Part Number | 18357-1 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tate Andale, Llc |
| Status | ACTIVE |
| Shoulder Height | 0.188 INCHES NOMINAL IN |
| Outside Diameter | 2.625 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Inside Diameter | 0.266 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 33016 ITEM 3 | Tate Andale, Llc (USA) |
| 18357-1 PRIMARY | Tate Andale, Llc (USA) |
NSN 4820-01-172-8335 is a Disk,valve, manufactured by Tate Andale, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-172-8335 has 2 manufacturer part numbers on file: 33016 ITEM 3 (Tate Andale, Llc), 18357-1 (Tate Andale, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-553-6727, 1240-01-641-3217. Verify interchangeability with system specifications before substitution.
Key specifications for 18357-1: Overall Height: 0.312 INCHES NOMINAL IN; Shoulder Height: 0.188 INCHES NOMINAL IN; Outside Diameter: 2.625 INCHES NOMINAL IN; Style Designator: PLAIN. 5 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.