The Compressor Unit,rotary, cataloged under National Stock Number 4310-01-685-2489, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is A and B Supply Co., Inc. Dba Johnstone Supply. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4310-01-685-2489 |
| Primary Part Number | B81-814 |
| Item Name | Compressor Unit,rotary |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | A and B Supply Co., Inc. Dba Johnstone Supply |
| Status | ACTIVE |
| Phase | SINGLE |
| Unloader Type | AUTOMATIC |
| Unpackaged Unit Length | 10.70 INCHES NOMINAL IN |
| Unpackaged Unit Width | 10.40 INCHES NOMINAL IN |
| Gas for Which Designed | REFRIGERANT R-22 |
| Prime Mover Cooling Medium | REFRIGERANT |
| Unpackaged Unit Height | 14.20 INCHES NOMINAL IN |
| Mounting Type | BRACKET |
| 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 |
|---|---|
| B81-814 | A and B Supply Co., Inc. Dba Johnstone Supply (USA) |
| Reference | Meaning |
|---|---|
| RXA5518EXD | 3/9 Design control — primary reference Tecumseh Products Company Llc Div Tecumseh Compressor Co. Llc |
NSN 4310-01-685-2489 is a Compressor Unit,rotary, manufactured by A and B Supply Co., Inc. Dba Johnstone Supply, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-685-2489 has 1 manufacturer part number on file: B81-814 (A and B Supply Co., Inc. Dba Johnstone Supply).
Key specifications for B81-814: Phase: SINGLE; Unloader Type: AUTOMATIC; Unpackaged Unit Length: 10.70 INCHES NOMINAL IN; Unpackaged Unit Width: 10.40 INCHES NOMINAL IN. 8 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.