The Spool,valve, cataloged under National Stock Number 3950-00-434-4538, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3950-00-434-4538 |
| Primary Part Number | 841817 |
| Item Name | Spool,valve |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL; ZINC COATED; 1.875 IN. O/A LG; THE FOLLOWING DIMENSTONS START AT ONE END AND GO THROUGH TO THE OTHER END; 0.438 IN. OD BY 0.188 IN. LG; 0.625 IN. OD BY 0.250 IN. LG; 0.438 IN. OD BY 0.250 IN. LG; 0.625 IN. OD BY 0.250 IN. LG; 0.438 IN. OD BY 0.500 IN. LG; 0.625 IN. OD BY 0.250 IN. LG; 0.438 IN. OD BY 0.188 IN. LG; BOTH EXTREME ENDS HAVE A U-SHAPED NOTCH 0.156 IN. W BY 0.312 IN. DEEP IN |
| 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 |
|---|---|
| 841817 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
NSN 3950-00-434-4538 is a Spool,valve, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-00-434-4538 has 1 manufacturer part number on file: 841817 (Eaton Aerospace, Llc Dba Jackson South).
1 possible match (shared part number, not a government interchangeability claim): 1660-01-082-7734. Verify interchangeability with system specifications before substitution.
Key specifications for 841817: General Characteristics Item Description: STEEL; ZINC COATED; 1.875 IN. O/A LG; THE FOLLOWING DIMENSTONS START AT ONE END AND GO THROUGH TO THE OTHER END; 0.438 IN. OD BY 0.188 IN. LG; 0.625 IN. OD BY 0.250 IN. LG; 0.438 IN. OD BY 0.250 IN. LG; 0.625 IN. OD BY 0.250 IN. LG; 0.438 IN. OD BY 0.500 IN. LG; 0.625 IN. OD BY 0.250 IN. LG; 0.438 IN. OD BY 0.188 IN. LG; BOTH EXTREME ENDS HAVE A U-SHAPED NOTCH 0.156 IN. W BY 0.312 IN. DEEP 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.
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.