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The Sanheng 20511 / 20512 Metric Female 24° Cone Swaged Hose Fitting is engineered for demanding hydraulic hose connection systems where reliability is paramount. It utilizes a highly secure 90° metric female thread with a 24° cone and O-ring sealing structure, making it strictly suitable for critical oil, water, and gas pipeline connections. When handling these components, technicians will immediately notice the substantial weight and precision-machined contours that signify its heavy-duty construction.
The fitting is available in the 20511 series and 20512 series, which are commonly used in hydraulic hose assemblies for heavy industrial hydraulic systems. By ensuring a tight, vibration-resistant fit, this component actively protects fluid systems from unexpected pressure drops and hazardous medium leaks, keeping operational efficiency at its peak.
Product Name | Sanheng Hydraulic 20511 20512 Female Metric 24° Cone Heavy Series Swaged Hose Fitting |
Code | 20511 20512 |
Material & Surface Treatment | Carbon steel (zinc plated Cr3+); Stainless steel (passivation) |
Application | Pipe connection（oil,water,gas） |
Technology | CNC machining |
Package | All adapters equipped with thread protective end caps, inside plastic bags, and then inside standard blank carton boxes. |
Custom Service | OEM & ODM available |
PART NO. | THREAD E | HOSE BORE (DN/DASH) | TUBE O.D. (S2) | O RING | DIMENSIONS (A/C/S2) |
20511-14-04 | M16X1.5 | 6/04 | 6 | 004.5X1.5 | 29/1.5/19 |
20511-16-04 | M16X1.5 | 6/04 | 8 | 006.5X1.5 | 29/1.5/22 |
20511-16-05 | M16X1.5 | 8/05 | 8 | O06.5X1.5 | 29/1.5/22 |
20511-18-04T | M18X1.5 | 6/04 | 10 | O08.0X1.5 | 25.5/1.5/22 |
20511-18-06 | M18X1.5 | 10/06 | 10 | O08.0X1.5 | 29/2/24 |
The fitting uses a metric female thread with a 24° cone sealing structure, suitable for connection with standard metric hydraulic components. It strictly adheres to international standards, including DIN 2353 and ISO 8434-1. This precise compliance ensures perfect interchangeability with global hydraulic systems, allowing procurement teams to confidently integrate these components without compatibility concerns.
The 90° design allows directional hose connection in hydraulic pipeline systems. This specific geometry effectively solves routing challenges in confined machinery spaces, preventing excessive bending stress on the hoses and extending the overall lifespan of the fluid circuit.
The swaged structure allows a firm connection between hose and fitting. When properly crimped, the metal sleeves bite securely into the hose material, creating a mechanical lock that withstands severe tension and continuous pulsation without separating.
The structural design is suitable for hydraulic hose applications in industrial equipment. Specifically engineered for the Heavy (S) series, this fitting boasts an exceptional pressure-bearing capacity, safely operating in extreme environments reaching 630 to 700 bar. Furthermore, the combination of the 24° cone surface with the O-ring creates a dual-sealing mechanism. This principle delivers outstanding anti-vibration and anti-loosening performance, ensuring a zero-leakage environment even under the most demanding high-pressure conditions.
Carbon steel with Cr3+ zinc plating is suitable for general hydraulic environments. The visually smooth, silver-toned finish acts as a durable shield against surface oxidation. We recommend this material selection primarily for standard mineral oil systems operating in controlled indoor or moderately exposed industrial environments, where cost-efficiency and reliable mechanical strength are the primary goals.
Stainless steel with passivation treatment provides improved corrosion resistance. The passivated surface feels sleek to the touch and removes free iron from the exterior, forming a protective oxide layer. This material is specifically targeted for harsh environments, including offshore marine applications, humid outdoor operations, and systems exposed to aggressive chemical corrosives, guaranteeing long-lasting structural integrity.
As a professional Metric 24° Cone Hydraulic Fitting, this product is widely used in the pipe connection of oil, water and gas across various heavy-duty industrial fields. Its heavy-series pressure-bearing performance and excellent sealing make it specifically suitable for the high-pressure hydraulic systems of engineering machinery (such as excavators and loaders), mining machinery, metallurgical equipment, ship hydraulic devices, and general industrial hydraulic equipment.
It can stably work in harsh working conditions characterized by intense pressure spikes, strong mechanical vibration, and frequent temperature changes. By effectively avoiding medium leakage, it protects expensive machinery from fluid starvation and ensures the continuous, stable operation of complex hydraulic systems, thereby reducing maintenance downtime.
The fitting is produced through rigorous CNC machining (other processing methods available for specific models), ensuring a highly stable structure and accurate thread processing. The precision of the CNC process results in cleanly cut threads with absolutely no burrs, providing a smooth, sharp metallic engagement when assembled with mating components.
During production, calibrated thread gauges are strictly used to inspect thread dimensions to ensure flawless compatibility with standard threaded connections. This meticulous attention to dimensional accuracy prevents cross-threading during installation and guarantees that the 24° cone aligns perfectly with the receiving port, locking the O-ring precisely into its designated groove for optimal sealing.
20511 is generally used for braided hydraulic hoses, while 20512 is specifically engineered for spiral hoses. The internal dimensions and crimping requirements differ slightly to accommodate the distinct reinforcing layers of these two hose types.
It uses a metric female thread with a 24° cone and O-ring sealing structure, conforming to standard metric specifications for heavy-duty industrial applications.
Carbon steel (with Cr3+ zinc plating) and stainless steel (passivated) materials are available, allowing you to match the fitting to your specific environmental and fluid requirements.
It is mainly used for secure hydraulic hose connections in fluid pipeline systems, particularly where high pressure and severe vibrations are present.
To ensure rapid and accurate matching, procurement teams should measure the thread's inner and outer diameter using a caliper, and determine the thread pitch with a pitch gauge. Additionally, always cross-reference the required tube outer diameter (O.D.) and the system's maximum operating pressure to ensure the Heavy (S) series rating aligns with your specific sealing mechanism.
A critical pitfall is attempting to mix metric threads with imperial components, which will inevitably strip the threads and cause catastrophic leaks. Furthermore, installers must clearly distinguish between parallel threads (which require the O-ring and 24° cone for sealing) and tapered threads. Recognizing these distinctions early significantly reduces procurement errors and costly installation trial-and-error.
