The Tank,fuel,engine, cataloged under National Stock Number 2910-00-134-4646, is classified within Federal Supply Class 2910 (Engine Fuel System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Har, Inc Dba Mercury Machine & Mfg Co Div. Government technical data includes 20 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 2910-00-134-4646 |
| Primary Part Number | 78649 |
| Item Name | Tank,fuel,engine |
| FSC / FSG | 2910 / 29 — Engine Fuel System Components, Nonaircraft |
| Manufacturer | Har, Inc Dba Mercury Machine & Mfg Co Div |
| Status | ACTIVE |
| Filler Cap | INCLUDED |
| Drain Plug | INCLUDED |
| Filler Neck | INCLUDED |
| Length | 43.500 INCHES NOMINAL IN |
| Opening Quantity | 1 LOCATION NOT OTHERWISE SPECIFIED |
| Capacity | 78.0 GALLON, US MEASURE |
| Self-Sealing Feature | NOT INCLUDED |
| Mounting Position | VERTICALLY ACROSS WIDTH |
| Quantity | 3 |
| Outside Diameter | 5.560 INCHES NOMINAL IN |
| Height | 17.120 INCHES NOMINAL IN |
| Mounting Bracket | NOT PROVIDED |
| Baffle | PROVIDED |
| Opening Connection Size | 3-17/32 IN. DIAMETER IN |
| Distance From Filler Neck End to Tank Body | 0.469 INCHES NOMINAL IN |
| Width | 25.995 INCHES NOMINAL IN |
| Drain Opening | INCLUDED |
| Material | STEEL |
| Opening Connection Method | RAISED FACE FLANGE LOCATION NOT OTHERWISE SPECIFIED |
| Liquid Quantity Transmitter | INCLUDED |
| 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 |
|---|---|
| 78649 PRIMARY | Har, Inc Dba Mercury Machine & Mfg Co Div (USA) |
| Reference | Meaning |
|---|---|
| 2910001344646 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 10931906-1 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 2910-00-134-4646 is a Tank,fuel,engine, manufactured by Har, Inc Dba Mercury Machine & Mfg Co Div, classified under FSC 2910, Engine Fuel System Components, Nonaircraft. Status: active.
NSN 2910-00-134-4646 has 1 manufacturer part number on file: 78649 (Har, Inc Dba Mercury Machine & Mfg Co Div).
5 possible matches (shared part number, not a government interchangeability claim): 5935-00-812-9240, 5306-00-995-0244, 6115-01-204-2830. Verify interchangeability with system specifications before substitution.
Key specifications for 78649: Filler Cap: INCLUDED; Drain Plug: INCLUDED; Filler Neck: INCLUDED; Length: 43.500 INCHES NOMINAL IN. 20 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.