The steel hex reducing nipple is a versatile fitting used to connect mismatched pipe sizes or adapt accessories in high‑pressure environments. Its hexagonal center section allows easy tightening with a wrench, while the male-to-female thread design supports both reduction and adaptation functions.
In automotive contexts such as power steering or brake systems, the female inverted flare side provides a robust metal-to-metal seal, resisting vibration and ensuring leak-free performance. In industrial setups, it is commonly used for connecting gauges, hydraulic cylinders, chemical processing lines, and pressure washer accessories.
Rated for 3,000–5,000 PSI, this adapter is suitable for demanding hydraulic and mechanical applications. The zinc or phosphate coating enhances corrosion resistance, giving it a darker matte gray or black finish.
TECHNICAL DETAILS:
| Specification | Details |
| Product Name | Steel Hex Reducing Nipple – Male-to-Female Adapter |
| Material | Plated carbon steel (zinc/phosphate coated) |
| Thread Type | NPT / inverted flare (depending on application) |
| Design | Hexagonal center section for wrench tightening |
| Pressure Rating | 3,000–5,000 PSI (hydraulic/industrial) |
| Temperature Range | -65°F to 250°F |
| Applications | Hydraulic systems, automotive brake/power steering lines, industrial gauges, chemical processing, pressure washer accessories |
| Features | High-pressure performance, corrosion-resistant coating, robust metal-to-metal seal, durable hex design |






