The Sight Gauge Assy, cataloged under National Stock Number 4140-01-290-4026, 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 Wellman Group. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Sight Gauge Assy |
| FSC / FSG | 4140 — Fans, Air Circulators, and Blower Equipment (FSG 41) |
| Manufacturers | Wellman Group (CAGE K7018) |
| Parameter | Value |
|---|---|
| NSN | 4140-01-290-4026 |
| Primary Part Number | 149/56 |
| Item Name | Sight Gauge Assy |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Wellman Group |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 149/56 | Wellman Group (GBR) |
| Reference | Meaning |
|---|---|
| 27454 | 3/9 Design control — primary reference Paxton Products Inc |
NSN 4140-01-290-4026 is a Sight Gauge Assy, manufactured by Wellman Group, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-290-4026 has 1 manufacturer part number on file: 149/56 (Wellman Group).
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.