DIN 2353 — engineering drawing (Brassland).
Specification
| Standard | DIN 2353 / ISO 8434-1 |
| Type | 24°-cone cutting-ring (bite-type) tube fitting |
| Thread | metric fine union-nut threads (L & S series) |
| Material | Brass bodies, nuts & ports (CW614N / CW617N); cutting ring = hardened steel |
| Certificate | EN 10204 3.1 per shipment; 3.2 on request |
Tube OD ↔ union-nut thread — L (light) series
| Tube OD | Union-nut thread |
|---|---|
| 6 mm | M12×1.5 |
| 8 mm | M14×1.5 |
| 10 mm | M16×1.5 |
| 12 mm | M18×1.5 |
| 15 mm | M22×1.5 |
| 18 mm | M26×1.5 |
| 22 mm | M30×2 |
| 28 mm | M36×2 |
| 35 mm | M45×2 |
| 42 mm | M52×2 |
Tube OD ↔ union-nut thread — S (heavy) series
| Tube OD | Union-nut thread |
|---|---|
| 6 mm | M14×1.5 |
| 8 mm | M16×1.5 |
| 10 mm | M18×1.5 |
| 12 mm | M20×1.5 |
| 14 mm | M22×1.5 |
| 16 mm | M24×1.5 |
| 20 mm | M30×2 |
| 25 mm | M36×2 |
| 30 mm | M42×2 |
| 38 mm | M52×2 |
Tube-OD ↔ union-nut thread to DIN 2353 (ISO 8434-1), L (light) and S (heavy) series; threads verified against two independent sources. The union-nut thread is metric fine and some threads appear in both series, so the tube OD must be measured. The 24° cone is per DIN 3861. Brass bodies and union nuts (and stud-ends, see DIN 3852); the cutting ring must out-harden the tube and is a bought-in hardened-steel component.
Applications
Typical applications include pneumatic and low-pressure hydraulic lines, instrumentation and gauge connections, and brass or copper tube runs where a brass fitting body and nut are wanted. All parts are made to order, so size, thread, finish and certification are tailored to your specification.
Related pages
DIN 2353 / DIN 3852.
View →MaterialStandard free-cutting brass.
View →MaterialHot-stamping / sealing brass.
View →IndustryPort / sealing plugs.
View →IndustrySealing & blanking plugs.
View →GuideMetric / BSP / pipe threads.
View →Quote in 24 hours.
Give the standard, thread and quantity. We are a brass turned-parts manufacturer in Jamnagar, India, exporting to 40+ countries.
Frequently asked questions
Three parts plus the tube: the fitting body (with the 24° cone), the union nut, and the cutting ring that bites into the tube as the nut is tightened.
The body and union nut are routinely brass (as are the stud-ends, ports and plugs). The cutting ring must be harder than the tube, so it is a bought-in hardened-steel component.
L (light) is for general / medium pressure; S (heavy) is for high pressure with thicker walls and larger nuts. Some threads appear in both series, so measure the tube OD to tell them apart.
Yes — ISO 8434-1 is the international equivalent of DIN 2353; the 24° cone geometry is per DIN 3861.