Inch-Size Fittings, Connections & Adapters – the Right Fit for Every Application

Whether it's classic car restoration, agricultural machinery maintenance, or industrial hydraulics – choosing the correct connection system is critical for both safety and performance. Inch-based threads remain widely used in Anglo-American markets and on older machinery, and they differ fundamentally from metric standards.

The Right Thread for Every Requirement

Our product range covers all common inch thread types, tailored to the specific needs of various industries:

UNF & UNC (Unified Fine / Coarse) – The American standard thread for vehicles, motorcycles, and industrial applications. UNF, with its finer pitch, is especially suitable for connections exposed to high vibration, while UNC is used for coarse, load-bearing joints.

BSW (British Standard Whitworth) – The British counterpart, commonly found on vintage vehicles and older machinery. The characteristic 55° flank angle is a key distinguishing feature.

NPT (National Pipe Thread) – The American pipe thread for sealing connections in hydraulic and pneumatic systems. The tapered design creates a self-sealing joint under pressure.

Material Variety for Demanding Applications

Depending on your specific requirements, we offer fittings in different material grades:

• Brass – Ideal for applications requiring corrosion resistance and good sliding properties, such as in brake or fuel systems of classic vehicles.

• Stainless Steel (Inox) – For the highest demands on corrosion resistance in aggressive environments, such as road construction or industrial settings.

• Nickel-Plated Steel – The classic choice for mechanically high-stress connections with additional surface protection.

Banjo Bolts, Adapters & Plugs – the Perfect Complement

For every connection system, we offer the right accessories:

• Banjo Bolts (hollow bolts) for hydraulic brake and clutch systems – an essential component in vehicle repairs.

• Adapters for seamless transitions between different thread standards.

• Plugs for securely sealing unused ports.

Expertise from a Single Source

With our specialized knowledge of classic vehicles, tractors, and agricultural as well as industrial machinery, we are your reliable partner for inch-sized fittings. Whether for vintage car restoration, tractor overhaul, or demanding industrial applications – at www.zoll-schrauben.ch you'll find the right solution, powered by Equipe Bachofner GmbH.

Visit our online shop and benefit from our extensive inventory, technical expertise in classic vehicle mechanics, and our commitment to the highest quality standards.