The Bolt,adjusting Air, cataloged under National Stock Number 1650-00-677-8520, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 1650-00-677-8520 |
| Item Name | Bolt,adjusting Air |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Status | ACTIVE |
| FSC Application Data | AIRCRAFT HYDRAULIC SYSTEM |
| General Characteristics Item Description | CRES TYPE 303,AMS 5640,0.500 IN. D,2.750 IN. LG IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 103427 | 3/9 Design control — primary reference Triumph Thermal Systems - Maryland, Inc. |
| 103427 | C/1 Advisory reference — outside the item-of-supply concept Defense & Development Enterprises Llc |
NSN 1650-00-677-8520 is a Bolt,adjusting Air, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 6130-01-115-7633, 6150-01-619-0786. Verify interchangeability with system specifications before substitution.
Key specifications for 1650-00-677-8520: FSC Application Data: AIRCRAFT HYDRAULIC SYSTEM; General Characteristics Item Description: CRES TYPE 303,AMS 5640,0.500 IN. D,2.750 IN. LG IN. 2 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.