The Stem,fluid Valve, cataloged under National Stock Number 4820-01-261-1081, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Niantic Tool, Inc. Dba Niantic Tool Co. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-261-1081 |
| Primary Part Number | A1160 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Niantic Tool, Inc. Dba Niantic Tool Co |
| Status | ACTIVE |
| Stem Actuating End Type | THREADED EXTERNALLY |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| A1160 PRIMARY | Niantic Tool, Inc. Dba Niantic Tool Co (USA) |
| B-3533 | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| 700250 PRIMARY | Niantic Tool, Inc. Dba Niantic Tool Co (USA) |
| 900023 PRIMARY | Lee Evans, Inc. (USA) |
| 831220 PRIMARY | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| 831220 | 5/9 Secondary reference Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
| 831220 | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| B-3533 | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| B-3533 | 5/9 Secondary reference Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
| 831220 | 5/9 Secondary reference U.S. Government activity |
| B-3533 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-261-1081 is a Stem,fluid Valve, manufactured by Niantic Tool, Inc. Dba Niantic Tool Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-261-1081 has 5 manufacturer part numbers on file: A1160 (Niantic Tool, Inc. Dba Niantic Tool Co), B-3533 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions), 700250 (Niantic Tool, Inc. Dba Niantic Tool Co), 900023 (Lee Evans, Inc.), 831220 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions).
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-262-1332, 4140-01-397-4139, 8455-01-528-9423. Verify interchangeability with system specifications before substitution.
Key specifications for A1160: Stem Actuating End Type: THREADED EXTERNALLY; Material: STEEL CORROSION RESISTING. 2 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.