The Adjustment Nut,ther, cataloged under National Stock Number 1650-01-108-2691, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is Triumph Thermal Systems, Llc. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-01-108-2691 |
| Primary Part Number | U535977 |
| Item Name | Adjustment Nut,ther |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Triumph Thermal Systems, Llc |
| Status | ACTIVE |
| General Characteristics Item Description | HEX WRENCHING FACILITY W/HOLE THRU SIDE FOR LOCKWIRE; USED TO ADJUST ELEMENT U537045 AND U537868 IN WELDMENT HOUSING |
| 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 |
|---|---|
| U535977 PRIMARY | Triumph Thermal Systems, Llc (USA) |
NSN 1650-01-108-2691 is a Adjustment Nut,ther, manufactured by Triumph Thermal Systems, Llc, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-108-2691 has 1 manufacturer part number on file: U535977 (Triumph Thermal Systems, Llc).
Key specifications for U535977: General Characteristics Item Description: HEX WRENCHING FACILITY W/HOLE THRU SIDE FOR LOCKWIRE; USED TO ADJUST ELEMENT U537045 AND U537868 IN WELDMENT HOUSING; End Item Identification: FUEL/OIL HEAT EXCHANGER UA534149. 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 1650-01-108-2691 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.