Modern equipment and machinery requires stronger more reliable joints to hold their parts together - and stronger more reliable fasteners.That’s why Unbrako countersunk screws are so widely used for fastening of plates, strips, mouldings, and other thin section parts. Unbrako countersunk screws provide reliable fastening and a smooth, attractive, flush mounting that enhances the appearance of the product on which they are used.Unbrako countersunk screws provide more clamping force because they are manufactured from high grade alloy steel, and held to exacting tolerances to ensure the highest degree of dimensional uniformity. The closely controlled head angle assures flush seating, and close all-round head contact by initially contacting at the upper portion of the head bearing area in the countersunk hole. Closely controlled threads mean tighter and more secure fits, and stronger assemblies. Deep accurate non-slip sockets provide maximum key engagement for full tightening without marring the surrounding surface.

Strengths

Precision forged head for continuous grain flow and maximum strength
Fully formed radiused threads rolled to maintain continuous grain flow for greater tensile and fatigue strength.
Heat treatment in a controlled atmosphere for maximum uniform strength and surface integrity without brittleness or decarburisation.
Uniform under-head angle gives maximum contact with side walls.
Radiused-root runout increases fatigue life.
Deep, accurate socket for uniform wrenching power and high maximum torques.

Applications

Controlled angle under the head ensures maximum flushness and side wall contact. Non-slip Hex socket prevents marring of material.

Technical specifications

Attributes

Threading diameter	6 mm
Length	40 mm
Material/finishing	Steel
Shape of head	Socket Countersunk
Class	ANSI B1.13M (Thread)-ISO262 (Thread)

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£ 30.60 ^{excl. VAT}

/ Each

£ 36.72 ^{incl. VAT}

Delivery within 10-15 business days