The Shaft,transmission,pump, cataloged under National Stock Number 4320-01-159-1741, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Industrial Technologies and Services Llc. Government technical data includes 4 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. 5 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 | 4320-01-159-1741 |
| Primary Part Number | 21665 |
| Item Name | Shaft,transmission,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Industrial Technologies and Services Llc |
| Status | ACTIVE |
| Shaft Type | IMPELLER SHAFT |
| Shaft Largest Diameter | 0.750 INCHES NOMINAL IN |
| Shaft Length | 9.812 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING AND COPPER ALLOY |
| 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 |
|---|---|
| 21665 PRIMARY | Industrial Technologies and Services Llc (USA) |
NSN 4320-01-159-1741 is a Shaft,transmission,pump, manufactured by Industrial Technologies and Services Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-159-1741 has 1 manufacturer part number on file: 21665 (Industrial Technologies and Services Llc).
5 possible matches (shared part number, not a government interchangeability claim): 5305-01-188-0494, 6210-01-293-8625, 5930-01-302-0366. Verify interchangeability with system specifications before substitution.
Key specifications for 21665: Shaft Type: IMPELLER SHAFT; Shaft Largest Diameter: 0.750 INCHES NOMINAL IN; Shaft Length: 9.812 INCHES NOMINAL IN; Special Features: IMPELLER RIGHT HAND ROTATION; W/GROOVE PIN, BRONZE 3/16 BY 1-1/4 IN. IN. 4 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.