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Bronze & Brass Fasteners Pty. Ltd.

133302 - Silicon Bronze Flat Fin Machine Screw - 5/16-18 x 3"

133302 - Silicon Bronze Flat Fin Machine Screw - 5/16-18 x 3"

Regular price $8.34 AUD
Regular price Sale price $8.34 AUD
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A countersunk metal thread machine screw with a smooth flat head, that can either fastened with a nut and washer.  With a flat or countersunk head, these screws are designed to recess into the parent and finish flush with the surface. 

Part thread has the advantage when used in a timber application for creating a superior seal between the timber and the plain shank of the screw, reducing the ingress of moisture.

With their smooth surface/no drive head, they are perfectly suited to deck bolts or high contact areas where a drive may be problematic, or where a smooth driverless head aesthetic is desired.

With fins formed under the countersink, this will provide traction into the timber and stop the bolt turning while tightened.

Head Diameter 18.5mm
Head Height (countersink) 4mm
Plain Shank Diameter 7.8mm
Outside thread Diameter 0.307" (7.8mm)
Thread Length 29mm
TPI 18
Countersink Angle 120
Metric Equivalent M8
Material Solid Silicon Bronze
Finish Mill Finish

Manufactured for Bronze and Brass Fasteners Pty Ltd by Yushung Metal Products Co., Ltd.

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