Unbrako button head screws are ideally suited for use in materials too thin to countersink and in non-critical loading applications. Their low head profile gives them smooth, aesthetic appearance, and their deep accurate sockets ensure non-slip wrench engagement to prevent marring of the surface in which they are installed.Unbrako button head screws are made from high grade alloy steel and every manufacturing operation is closely controlled. Heads are forged for greater strength and full formed radius-root rolled threads assure close tolerances, maximum strength and superior fatigue resistance. Deep accurate sockets allow full tightening, and customized heat treatment of each heat of steel ensures maximum strength and hardness without brittleness.

Strengths

Low head profile for enhanced in situ appearance.
Deep, accurate socket for maximum key engagement
Heat treatment in a controlled atmosphere for maximumuniform strength and surface integrity without brittleness or decarburisation.
Fully formed radiused threads rolled to maintain continuous grain flow for greater tensile and fatigue strength.
Radiused-root runout increases fatigue life.
Precision forged head for continuous grain flow and maximum strength.

Applications

Low head streamline design. Use them in materials too thin to countersink; also for non-critical loading requiring heat treated screws

Technical specifications

Attributes

Threading diameter	8 mm
Length	40 mm
Material/finishing	Steel
Shape of head	Button
Class	4g6g (Thread)

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£ 21.54 ^{excl. VAT}

/ Each

£ 25.85 ^{incl. VAT}

In stock: Next day delivery