In hydraulic systems, every connection counts. Choosing the correct thread type—JIC, NPT, NPSM, or SAE—can mean the difference between peak performance and costly downtime. At HAND HYDRAULIC, we engineer American-standard hydraulic fittings with precision, durability, and reliability built into every component. Whether you work in construction, agriculture, manufacturing, or heavy machinery, our products ensure seamless, leak-free operation under the most demanding conditions.
Understanding Hydraulic Fitting Threads: A Quick Reference
Type
Sealing Method
Best For
Key Features
JIC 37° Flare
Metal-to-metal contact
High-pressure, high-vibration applications
Reusable, robust, SAE J514 compliant
NPT/NPTF Tapered
Thread engagement + sealant
General-purpose, low-to-medium pressure systems
Self-sealing, widely used, cost-effective
NPSM Straight
O-ring or bonded washer
Low-pressure hydraulic and pneumatic systems
Easy alignment, frequent disassembly
SAE O-Ring Boss
Compressed O-ring face seal
High-pressure, zero-leak systems
Superior sealing, reusable, high reliability
Why Choose HAND HYDRAULIC?
We don’t just supply fittings—we deliver engineered solutions:
Wide Range: From JIC adapters and NPT elbows to SAE O-ring bosses and metric DIN fittings.
Material Excellence: Carbon steel, stainless steel, and brass, tested for strength and corrosion resistance.
Quality Assurance: Each fitting undergoes rigorous pressure, seal, and fatigue testing.
Global Standards: Compliant with SAE, ISO, DIN, and GOST specifications.
Custom Solutions: Special sizes or configurations? We tailor to your needs.
Applications Across Industries
Mobile Machinery: Excavators, tractors, lifting equipment
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