The Flange,opening,fuel Storage Tank, cataloged under National Stock Number 2910-00-948-3687, is classified within Federal Supply Class 2910 (Engine Fuel System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 2910-00-948-3687 |
| Primary Part Number | 64A90B121 |
| Item Name | Flange,opening,fuel Storage Tank |
| FSC / FSG | 2910 / 29 — Engine Fuel System Components, Nonaircraft |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM; 5.625 IN. OD; 3.000 IN. ID; 0.062 IN. MATERIAL THK; 0.562 IN. H; 12 HOLES 0.281 IN. DIA; BOLT CIRCLE 4.750 IN. DIA 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 |
|---|---|
| 64A90B121 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 416151 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2910-00-948-3687 is a Flange,opening,fuel Storage Tank, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 2910, Engine Fuel System Components, Nonaircraft. Status: active.
NSN 2910-00-948-3687 has 1 manufacturer part number on file: 64A90B121 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
2 possible matches (shared part number, not a government interchangeability claim): 6220-01-415-7647, 6515-01-728-5882. Verify interchangeability with system specifications before substitution.
Key specifications for 64A90B121: General Characteristics Item Description: ALUMINUM; 5.625 IN. OD; 3.000 IN. ID; 0.062 IN. MATERIAL THK; 0.562 IN. H; 12 HOLES 0.281 IN. DIA; BOLT CIRCLE 4.750 IN. DIA 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.