DKJ (C91) UNF hose fittings

Straight hose fittings with UNF internal thread

Straight JIC (UNF) fittings with internal thread (IT) and a 74-degree seat. Fittings with a characteristic 74° concave cone resembling a funnel. In Poland, fittings often appear under the designation C91 = DKJ. DKJ fittings are commonly called American fittings ( due to UNF thread ) This type of fitting is found in modern agricultural machinery, construction machinery, and forestry equipment - of Western production. Our offer also includes inch (BSP) fittings with a funnel-shaped cone (DK TOYOTA fittings) and metric fittings with a concave cone (DK). Construction - galvanized free-cutting steel. DKJ fittings also occur in elbow versions DKJ90 and DKJ45. Our offer also includes straight UNF fittings designed for air conditioning

Construction and characteristics of UNF thread fittings

DKJ UNF fittings are hydraulic components designed for hose crimping in high-pressure systems. They are characterized by the use of UNF (Unified National Fine) thread and are compatible with many hydraulic installations. Construction and specification: Design: DKJ UNF fittings are equipped with an external UNF thread and an integrated 37° cone seal. Material: High-quality carbon or stainless steel with anti-corrosion coating. Sizes: Available in various dimensions, ensuring compatibility with many hose diameters. Alternative product versions: DKJ UNF fittings are available in several variants: with BSP Toyota threads – version matched to BSP specifications, ideal for applications in the Asian industry: DKJ BSP Toyota fittings. 4SH Interlock hose version – dedicated to high-strength hoses, used in extreme conditions ( very high pressures ) 

Where are DKJ fittings used?

DKJ fittings are called American fittings, hence they are found in machines and equipment manufactured in the USA. These types of fittings are used in hose connections in hydraulic and pneumatic systems. Used in systems requiring durable and tight connections. Typical in construction, agricultural, and industrial machinery. This type of fitting is found in sectors such as: power hydraulics: Industrial and mobile installations, automotive industry: power steering systems, Construction: Heavy machinery, cranes and lifts.

Classification of fittings according to DKJ:

• DKJ UNF fittings – with UNF internal threads.
• BSP Toyota fittings – with BSP thread, widely used in Japan and Asia.
• 4SP Interlock fittings – special fittings with a double Interlock seal for 4SH type hoses

Technical parameters of DKJ fittings:

• Material: carbon steel, stainless steel.
• Thread types: UNF, BSP.
• Available thread sizes: from 1/4” to 2”.
• Pressure range: high-pressure installations up to 420 bar
• Application: crimping on hydraulic hoses 
• Matching fitting: Fitting with AGJ external thread