The Sleeve,lower, cataloged under National Stock Number 2825-01-033-6621, is classified within Federal Supply Class 2825 (Steam Turbines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Niantic Tool, Inc. Dba Niantic Tool Co. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Sleeve,lower |
| FSC / FSG | 2825 — Steam Turbines and Components (FSG 28) |
| Manufacturers | Niantic Tool, Inc. Dba Niantic Tool Co (CAGE 0B5H6); Lee Evans, Inc. (CAGE 0DKH2) |
| Parameter | Value |
|---|---|
| NSN | 2825-01-033-6621 |
| Primary Part Number | B2102 |
| Item Name | Sleeve,lower |
| FSC / FSG | 2825 / 28 — Steam Turbines and Components |
| Manufacturer | Niantic Tool, Inc. Dba Niantic Tool Co |
| 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 |
|---|---|
| B2102 PRIMARY | Niantic Tool, Inc. Dba Niantic Tool Co (USA) |
| 700078 PRIMARY | Niantic Tool, Inc. Dba Niantic Tool Co (USA) |
| 900135 | Lee Evans, Inc. (USA) |
| Reference | Meaning |
|---|---|
| B3210 | C/1 Advisory reference — outside the item-of-supply concept Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
| H-8337 30 | C/1 Advisory reference — outside the item-of-supply concept Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
| 774049 | C/1 Advisory reference — outside the item-of-supply concept Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
| H8171 30 | C/1 Advisory reference — outside the item-of-supply concept Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
| B3210 | 5/9 Secondary reference U.S. Government activity |
| 774049 | 5/9 Secondary reference U.S. Government activity |
| H-8337PC30 | 5/9 Secondary reference U.S. Government activity |
| H8171PC30 | 5/9 Secondary reference U.S. Government activity |
NSN 2825-01-033-6621 is a Sleeve,lower, manufactured by Niantic Tool, Inc. Dba Niantic Tool Co, classified under FSC 2825, Steam Turbines and Components. Status: active.
NSN 2825-01-033-6621 has 3 manufacturer part numbers on file: B2102 (Niantic Tool, Inc. Dba Niantic Tool Co), 700078 (Niantic Tool, Inc. Dba Niantic Tool Co), 900135 (Lee Evans, Inc.).
8 possible matches (shared part number, not a government interchangeability claim): 6505-01-177-1960, 4710-01-218-3170, 8110-01-324-3797. Verify interchangeability with system specifications before substitution.
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.