The 1C and 1D straight fittings are precision-engineered bite-type (flareless) tube adapters designed for connecting same-diameter hydraulic tubes or tubes to hoses, forming continuous, leak-proof hydraulic lines. Compliant with DIN 2353 and ISO 8434-1 standards, they feature a 24-degree cone structure that ensures reliable high-pressure performance, making them indispensable in industrial and agricultural hydraulic systems.
Their "1C" and "1D" designations denote specific configurations—typically male/female connections or straight unions (with "RN" indicating nut-equipped unions) —while the bite-type mechanism uses a cutting ring to seal tightly on tubes without requiring flared ends, simplifying assembly and enhancing sealing stability. Crafted from carbon steel (often zinc-plated) or stainless steel, these fittings offer tailored corrosion resistance for diverse operating environments.
Engineered to withstand high working pressures (varies by L/S series and tube size), they are widely utilized in heavy-duty applications such as industrial machinery, agricultural equipment, and fluid power systems. Combining standardized compatibility, robust construction, and efficient sealing, the 1C and 1D straight fittings deliver consistent reliability for critical hydraulic connections.
| PART NO. | THREAD | TUBE O.D. | DIMENSIONS | MPa | |||||||
| E | F | D1 | D2 | I1 | L1 | S1 | S2 | S3 | |||
| 1C-12 | M12X1.5 | M12X1.5 | 6 | 6 | 10 | 39 | 12 | 14 | 14 | 31.5 L series | |
| 1C-14 | M14X1.5 | M14X1.5 | 8 | 8 | 11 | 40 | 14 | 17 | 17 | ||
| 1C-16 | M16X1.5 | M16X1.5 | 10 | 10 | 13 | 42 | 17 | 19 | 19 | ||
| 1C-18 | M18X1.5 | M18X1.5 | 12 | 12 | 14 | 43 | 19 | 22 | 22 | ||
| 1C-22 | M22X1.5 | M22X1.5 | 15 | 15 | 16 | 46 | 24 | 27 | 27 | ||
| 1C-26 | M26X1.5 | M26X1.5 | 18 | 18 | 16 | 48 | 27 | 32 | 32 | ||
| 1C-30 | M30X2 | M30X2 | 22 | 22 | 20 | 52 | 32 | 36 | 36 | 16 L series | |
| 1C-36 | M36X2 | M36X2 | 28 | 28 | 21 | 54 | 41 | 41 | 41 | ||
| 1C-45 | M45X2 | M45X2 | 35 | 35 | 20 | 63 | 46 | 50 | 50 | ||
| 1C-52 | M52X2 | M52X2 | 42 | 42 | 21 | 66 | 55 | 60 | 60 | ||
| 1D-14 | M14X1.5 | M14×1.5 | 6 | 6 | 16 | 45 | 14 | 17 | 17 | 63 S series | |
| 1D-16 | M16X1.5 | M16X1.5 | 8 | 8 | 18 | 47 | 17 | 19 | 19 | ||
| 1D-18 | M18X1.5 | M18X1.5 | 10 | 10 | 17 | 49 | 19 | 22 | 22 | ||
| 1D-20 | M20X1.5 | M20X1.5 | 12 | 12 | 19 | 51 | 22 | 24 | 24 | ||
| 1D-22 | M22X1.5 | M22X1.5 | 14 | 14 | 22 | 57 | 24 | 27 | 27 | ||
| 1D-24 | M24X1.5 | M24X1.5 | 16 | 16 | 21 | 57 | 27 | 30 | 30 | 40 S series | |
| 1D-30 | M30X2 | M30X2 | 20 | 20 | 23 | 66 | 32 | 36 | 36 | ||
| 1D-36 | M36X2 | M36X2 | 25 | 25 | 26 | 74 | 41 | 46 | 46 | ||
| 1D-42 | M42X2 | M42×2 | 30 | 30 | 27 | 80 | 46 | 50 | 50 | ||
| 1D-52 | M52X2 | M52X2 | 38 | 38 | 29 | 90 | 55 | 60 | 60 | 31.5 S series | |
| Note:In case if you are interested to order the adapter in complete set with cutting ring and nut it is necessary to insert suffix "RN"after our part no.,for example 1C-30RN, | |||||||||||
The 1C and 1D straight fittings are precision-engineered bite-type (flareless) tube adapters designed for connecting same-diameter hydraulic tubes or tubes to hoses, forming continuous, leak-proof hydraulic lines. Compliant with DIN 2353 and ISO 8434-1 standards, they feature a 24-degree cone structure that ensures reliable high-pressure performance, making them indispensable in industrial and agricultural hydraulic systems.
Their "1C" and "1D" designations denote specific configurations—typically male/female connections or straight unions (with "RN" indicating nut-equipped unions) —while the bite-type mechanism uses a cutting ring to seal tightly on tubes without requiring flared ends, simplifying assembly and enhancing sealing stability. Crafted from carbon steel (often zinc-plated) or stainless steel, these fittings offer tailored corrosion resistance for diverse operating environments.
Engineered to withstand high working pressures (varies by L/S series and tube size), they are widely utilized in heavy-duty applications such as industrial machinery, agricultural equipment, and fluid power systems. Combining standardized compatibility, robust construction, and efficient sealing, the 1C and 1D straight fittings deliver consistent reliability for critical hydraulic connections.
| PART NO. | THREAD | TUBE O.D. | DIMENSIONS | MPa | |||||||
| E | F | D1 | D2 | I1 | L1 | S1 | S2 | S3 | |||
| 1C-12 | M12X1.5 | M12X1.5 | 6 | 6 | 10 | 39 | 12 | 14 | 14 | 31.5 L series | |
| 1C-14 | M14X1.5 | M14X1.5 | 8 | 8 | 11 | 40 | 14 | 17 | 17 | ||
| 1C-16 | M16X1.5 | M16X1.5 | 10 | 10 | 13 | 42 | 17 | 19 | 19 | ||
| 1C-18 | M18X1.5 | M18X1.5 | 12 | 12 | 14 | 43 | 19 | 22 | 22 | ||
| 1C-22 | M22X1.5 | M22X1.5 | 15 | 15 | 16 | 46 | 24 | 27 | 27 | ||
| 1C-26 | M26X1.5 | M26X1.5 | 18 | 18 | 16 | 48 | 27 | 32 | 32 | ||
| 1C-30 | M30X2 | M30X2 | 22 | 22 | 20 | 52 | 32 | 36 | 36 | 16 L series | |
| 1C-36 | M36X2 | M36X2 | 28 | 28 | 21 | 54 | 41 | 41 | 41 | ||
| 1C-45 | M45X2 | M45X2 | 35 | 35 | 20 | 63 | 46 | 50 | 50 | ||
| 1C-52 | M52X2 | M52X2 | 42 | 42 | 21 | 66 | 55 | 60 | 60 | ||
| 1D-14 | M14X1.5 | M14×1.5 | 6 | 6 | 16 | 45 | 14 | 17 | 17 | 63 S series | |
| 1D-16 | M16X1.5 | M16X1.5 | 8 | 8 | 18 | 47 | 17 | 19 | 19 | ||
| 1D-18 | M18X1.5 | M18X1.5 | 10 | 10 | 17 | 49 | 19 | 22 | 22 | ||
| 1D-20 | M20X1.5 | M20X1.5 | 12 | 12 | 19 | 51 | 22 | 24 | 24 | ||
| 1D-22 | M22X1.5 | M22X1.5 | 14 | 14 | 22 | 57 | 24 | 27 | 27 | ||
| 1D-24 | M24X1.5 | M24X1.5 | 16 | 16 | 21 | 57 | 27 | 30 | 30 | 40 S series | |
| 1D-30 | M30X2 | M30X2 | 20 | 20 | 23 | 66 | 32 | 36 | 36 | ||
| 1D-36 | M36X2 | M36X2 | 25 | 25 | 26 | 74 | 41 | 46 | 46 | ||
| 1D-42 | M42X2 | M42×2 | 30 | 30 | 27 | 80 | 46 | 50 | 50 | ||
| 1D-52 | M52X2 | M52X2 | 38 | 38 | 29 | 90 | 55 | 60 | 60 | 31.5 S series | |
| Note:In case if you are interested to order the adapter in complete set with cutting ring and nut it is necessary to insert suffix "RN"after our part no.,for example 1C-30RN, | |||||||||||
