The Plenum, cataloged under National Stock Number 4140-01-345-6625, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is S & B Machine Works Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4140-01-345-6625 |
| Primary Part Number | 322707-000 |
| Item Name | Plenum |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | S & B Machine Works Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM; 7.440 IN. OVERALL WIDTH; 8.040 IN. OVERALL LENGTH IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 322707-000 | S & B Machine Works Inc. (USA) |
| Reference | Meaning |
|---|---|
| 322707-000 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4140-01-345-6625 is a Plenum, manufactured by S & B Machine Works Inc., classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-345-6625 has 1 manufacturer part number on file: 322707-000 (S & B Machine Works Inc.).
Key specifications for 322707-000: General Characteristics Item Description: ALUMINUM; 7.440 IN. OVERALL WIDTH; 8.040 IN. OVERALL LENGTH IN. 1 specification is 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.
NSN 4140-01-345-6625 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.