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"
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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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