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A pack of 10 copper laser cutting nozzles in the BOCI (Bochu) standard D28 format: 28 mm outer diameter, 15 mm height and an M11 x 0.75 thread, the nozzle used on BLT310 and BLT4xx series cutting heads. Sizes are listed against the BOCI standard nozzle part numbers (DY.Z.E00xxAA single layer, Y.Z.E0034 double layer) where BOCI publishes them.
Each nozzle is machined from high conductivity copper with a concentric bore for a centred gas jet and a clean capacitive sensing electrode. Because D28 x H15 x M11 is a shared industry size, the same nozzle also fits Raytools D28 and Precitec HP1.5 inch heads in a mixed workshop.
Single layer for oxygen cutting of carbon steel, double layer for nitrogen or air cutting of stainless steel and aluminium. Packs of 10.
| Pack Quantity | 10 nozzles, all the same layer and bore |
| Outer Diameter | 28 mm (1 3/32") |
| Height | 15 mm (19/32") |
| Thread | M11 x 0.75 |
| Material | Copper (high conductivity) |
| Layer | single layer or double layer |
| Bore Sizes | 0.8 mm to 6 mm (17 sizes) |
| Part Numbers | BOCI DY.Z.E0035AA, DY.Z.E0036AA, DY.Z.E0037AA and more (see table) |
| Bore | Single LayerBOCI no. (SPM no.) | Double LayerBOCI no. (SPM no.) |
|---|---|---|
| 0.8 mm | No BOCI equivalent(SPM-LAS-2114-S08) | No BOCI equivalent(SPM-LAS-2114-D08) |
| 1.0 mm | No BOCI equivalent(SPM-LAS-2114-S10) | No BOCI equivalent(SPM-LAS-2114-D10) |
| 1.2 mm | DY.Z.E0049AA(SPM-LAS-2114-S12) | No BOCI equivalent(SPM-LAS-2114-D12) |
| 1.3 mm | No BOCI equivalent(SPM-LAS-2114-S13) | No BOCI equivalent(SPM-LAS-2114-D13) |
| 1.4 mm | DY.Z.E0035AA(SPM-LAS-2114-S14) | No BOCI equivalent(SPM-LAS-2114-D14) |
| 1.5 mm | No BOCI equivalent(SPM-LAS-2114-S15) | No BOCI equivalent(SPM-LAS-2114-D15) |
| 1.6 mm | DY.Z.E0036AA(SPM-LAS-2114-S16) | No BOCI equivalent(SPM-LAS-2114-D16) |
| 1.7 mm | No BOCI equivalent(SPM-LAS-2114-S17) | No BOCI equivalent(SPM-LAS-2114-D17) |
| 1.8 mm | DY.Z.E0037AA(SPM-LAS-2114-S18) | No BOCI equivalent(SPM-LAS-2114-D18) |
| 2.0 mm | DY.Z.E0038AA(SPM-LAS-2114-S20) | Y.Z.E0034(SPM-LAS-2114-D20) |
| 2.5 mm | DY.Z.E0039AA(SPM-LAS-2114-S25) | No BOCI equivalent(SPM-LAS-2114-D25) |
| 3.0 mm | DY.Z.E0040AA(SPM-LAS-2114-S30) | No BOCI equivalent(SPM-LAS-2114-D30) |
| 3.5 mm | No BOCI equivalent(SPM-LAS-2114-S35) | No BOCI equivalent(SPM-LAS-2114-D35) |
| 4.0 mm | DY.Z.E0053AA(SPM-LAS-2114-S40) | No BOCI equivalent(SPM-LAS-2114-D40) |
| 4.5 mm | No BOCI equivalent(SPM-LAS-2114-S45) | No BOCI equivalent(SPM-LAS-2114-D45) |
| 5.0 mm | No BOCI equivalent(SPM-LAS-2114-S50) | No BOCI equivalent(SPM-LAS-2114-D50) |
| 6.0 mm | No BOCI equivalent(SPM-LAS-2114-S60) | No BOCI equivalent(SPM-LAS-2114-D60) |
Carbon steel, oxygen
Use single layer nozzles. Small bores (0.8 to 1.2 mm) for thin sheet, 1.5 to 2.0 mm for most 3 to 10 mm plate, 2.5 mm and up for thick plate.
Stainless steel and aluminium, nitrogen or air
Use double layer nozzles. Larger bores are used on thicker material where more gas is needed.
Poor cut quality
Dross, a wandering kerf or bad piercing are often caused by a damaged or dirty nozzle. Fit a new nozzle of the same bore before changing other settings.
Height sensing faults
The nozzle is part of the capacitive height sensor. A worn or loose nozzle causes height alarms.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| LaserThings (pack of 10) | USD 25.35 | 5 Oct 2026 |
| Laser Consumables (pack of 10) | USD 27.82 | 5 Oct 2026 |
| Quality Laser Supply (pack of 10) | USD 35.00 | 6 Oct 2026 |
| Spare Part Mart (pack of 10) | USD 20.32 | Today |
Our price of USD 20.32 is 20% to 42% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
BOCI heads that take the D28 x H15 x M11 standard nozzle. Check the nozzle currently fitted if unsure.
No. It is an aftermarket nozzle made to the same 28 x 15 mm, M11 dimensions. BOCI part numbers are listed so you can match your existing nozzle.
10, all the same layer and bore size you select. Nozzles are only sold in packs of 10.
Single layer for oxygen cutting of carbon steel. Double layer for nitrogen or air cutting of stainless steel and aluminium, where the inner cone stabilises the high pressure jet.
Use your machine's cutting chart for the material and thickness. As a guide, thin sheet runs 0.8 to 1.5 mm, mid plate 1.5 to 2.5 mm and thick plate 3.0 mm and up. Bigger bores pass more gas at lower velocity.
When the bore is damaged, out of round or coated in spatter that will not clean off, or when height sensing becomes unstable. Busy machines often change nozzles daily.
Yes. Shipping options and costs for your country are shown at checkout.
Prices depend on your postcode.
In USD for the quantity selected. The exact cost is confirmed at checkout.
