The Barrel,atomizer, cataloged under National Stock Number 4530-01-047-5766, is classified within Federal Supply Class 4530 (Fuel Burning Equipment Units) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Todd Combustion Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4530-01-047-5766 |
| Primary Part Number | B-2-1-635 |
| Item Name | Barrel,atomizer |
| FSC / FSG | 4530 / 45 — Fuel Burning Equipment Units |
| Manufacturer | Todd Combustion Inc |
| Status | ACTIVE |
| General Characteristics Item Description | SEAMLESS STEEL TUBING MIL-T-20157 TYPE E,1-1/2 IN. OD,1 IN. ID,1-3/16 IN. ID FOR 1 IN. ON ONE END,W/RING ON OD 4-1/4 IN. FROM SAME END,W/3 EA CENTERING FINS 120 DEG APART 3/8 IN. W,1 1/2 IN. LG,5/16 IN. H W/30 DEG CHAMFER ON ENDS,FINS LOCATED 24 IN. FROM OTHER END,3-1/4 IN. OF THIS END 1.497 IN. OD,1.343 IN. OD 3/16 IN. LG @FROM END THEN 3/4 IN. LG 1-1/2 IN. NF-24 THD,3/16 IN. LG W/1.343 IN. OD AFTER THD,1/4 IN. LG SPACE AT 1-1/2 IN. OD FOLLOWED BY 5/8 IN. LG FLATS,1.313 IN. ACROSS FLATS ON THE RING END,2 SPECIAL GROOVES ON OTHER END 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 |
|---|---|
| D42042PIECE12-37-3-4IN | Todd Combustion Inc (USA) |
| B-2-1-635 PRIMARY | Todd Combustion Inc (USA) |
| 25283-37-3-4IN | Todd Combustion Inc (USA) |
| Reference | Meaning |
|---|---|
| D42042PIECE12-37 | C/1 Advisory reference — outside the item-of-supply concept Todd Combustion Inc |
| 25283 | D/9 Drawing number reference only Todd Combustion Inc |
| D42042PIECE12-3 | C/1 Advisory reference — outside the item-of-supply concept Todd Combustion Inc |
| B-2-1-635 37 3-4INLG | C/1 Advisory reference — outside the item-of-supply concept Todd Combustion Inc |
NSN 4530-01-047-5766 is a Barrel,atomizer, manufactured by Todd Combustion Inc, classified under FSC 4530, Fuel Burning Equipment Units. Status: active.
NSN 4530-01-047-5766 has 3 manufacturer part numbers on file: D42042PIECE12-37-3-4IN (Todd Combustion Inc), B-2-1-635 (Todd Combustion Inc), 25283-37-3-4IN (Todd Combustion Inc).
4 possible matches (shared part number, not a government interchangeability claim): 6210-01-104-6022, 5360-01-134-7424, 5940-01-393-6936. Verify interchangeability with system specifications before substitution.
Key specifications for B-2-1-635: General Characteristics Item Description: SEAMLESS STEEL TUBING MIL-T-20157 TYPE E,1-1/2 IN. OD,1 IN. ID,1-3/16 IN. ID FOR 1 IN. ON ONE END,W/RING ON OD 4-1/4 IN. FROM SAME END,W/3 EA CENTERING FINS 120 DEG APART 3/8 IN. W,1 1/2 IN. LG,5/16 IN. H W/30 DEG CHAMFER ON ENDS,FINS LOCATED 24 IN. FROM OTHER END,3-1/4 IN. OF THIS END 1.497 IN. OD,1.343 IN. OD 3/16 IN. LG @FROM END THEN 3/4 IN. LG 1-1/2 IN. NF-24 THD,3/16 IN. LG W/1.343 IN. OD AFTER THD,1/4 IN. LG SPACE AT 1-1/2 IN. OD FOLLOWED BY 5/8 IN. LG FLATS,1.313 IN. ACROSS FLATS ON THE RING END,2 SPECIAL GROOVES ON OTHER END 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.