The Transmitter,pressure, cataloged under National Stock Number 6685-01-417-3056, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Szy Holdings, Llc Dba Szy Holdings Llc. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6685-01-417-3056 |
| Primary Part Number | A831-221-1C-K33 |
| Item Name | Transmitter,pressure |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Szy Holdings, Llc Dba Szy Holdings Llc |
| Status | ACTIVE |
| Actuation Method | PRESSURE SENSING ELEMENT |
| Current Type | DC |
| Voltage Rating | 10.0 VOLTS MINIMUM AND 15.0 VOLTS MAXIMUM OUTPUT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A831-221-1C-K33 | Iso Group Inc Dba Iso Group Inc (USA) |
| A831-221-1C-K33 PRIMARY | Szy Holdings, Llc Dba Szy Holdings Llc (USA) |
| Reference | Meaning |
|---|---|
| A831-221-1C-K33 | 3/9 Design control — primary reference Dynisco Inc |
NSN 6685-01-417-3056 is a Transmitter,pressure, manufactured by Szy Holdings, Llc Dba Szy Holdings Llc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-417-3056 has 2 manufacturer part numbers on file: A831-221-1C-K33 (Iso Group Inc Dba Iso Group Inc), A831-221-1C-K33 (Szy Holdings, Llc Dba Szy Holdings Llc).
Key specifications for A831-221-1C-K33: Actuation Method: PRESSURE SENSING ELEMENT; Current Type: DC; Voltage Rating: 10.0 VOLTS MINIMUM AND 15.0 VOLTS MAXIMUM OUTPUT. 3 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.