Brass Hose Tail 7.9mm (5/16") ID to R 1/4" BSP Male Thread | Nickel-Plated Pneumatic Fitting

Technical Specification

Why This Fitting

The barbed hose tail design creates a mechanical grip on the inner bore of the hose, eliminating the risk of blow-off under pressure when secured with a hose clip. The R 1/4″ BSP parallel male thread is the most common port size found on compressors, regulators, manifolds, and pneumatic tools across UK workshops — making this adaptor a universal solution for the majority of air line installations.

• Precision-machined brass body — dimensionally accurate for consistent, repeatable assembly
• Nickel-plated finish — resists corrosion in humid workshop and industrial environments
• Barbed retention profile — locks securely into 5/16″ bore hose; use with a hose clip for a permanent seal
• R 1/4″ BSP male thread — compatible with the vast majority of UK pneumatic equipment ports
• Compact, low-profile form factor — ideal for tight installations and panel-mounted ports
• No PTFE tape required on parallel threads — use with a bonded seal or O-ring for a leak-free joint

Installation Notes

Push the barbed tail firmly into the 5/16″ (7.9mm) bore of your air hose until the barb is fully seated. Secure with a worm-drive hose clip positioned over the barb for a permanent, pressure-rated connection. Apply a bonded seal or fibre washer to the R 1/4″ BSP male thread before tightening into the port — do not over-torque. Inspect the joint before pressurising the system.

Compatibility: Designed for use with 7.9mm (5/16″) internal diameter pneumatic air hose. Verify your hose bore and port thread size before ordering. For tapered BSP (BSPT) ports, a parallel-to-taper adaptor may be required.  |  Stock Location: Dispatched from our UK warehouse.  |  Trade Accounts: Contact us for volume pricing and account terms.