8G-10 x 50 mm Square Drive Decking Screw, 304 Stainless Steel - SDSA28GX50

Made in 304 (A2) stainless steel, the Imperial Square Drive Countersunk Decking Screw is a countersunk or trim head timber screw with a square drive and ribs under the head. It is used to fix decking boards and outdoor timber.

The range runs to 9 variants, covering sizes 8G-10 to 12G-11 and lengths 40 mm to 75 mm. Pack quantities depend on size: packs of 200 to 1000.

A2 stainless (grade 304) gives sound general corrosion resistance for inside work, fresh water and ordinary outdoor exposure. It is not the grade normally chosen for coastal, pool or marine work, where A4 (316) is recommended.

Austenitic stainless steel is generally non-magnetic, although cold-worked parts can show weak magnetism. In wet conditions, keep stainless steel apart from aluminium and galvanised steel with a washer or sleeve, to reduce the risk of galvanic corrosion.

Where this product is used

• Fresh water and general outdoor fittings
• Outdoor furniture and pergolas
• General workshop and maintenance use
• Indoor architectural and joinery work
• Cladding and fencing
• Bulk jobs and trade or maintenance stores buying in larger packs

Features

• A2 (304) stainless steel for indoor, fresh water and general outdoor use
• Square drive reduces driver slip
• T17 point starts in timber
• Supplied in packs of 200 to 1000
• Ribs under the head help the head to seat
• Lengths from 40 mm to 75 mm

Key specifications

Selecting the right option

Pre-drill close to board ends and in dense hardwood to prevent splitting. Use the square drive bit size listed on the variant. Near the coast, around pools or in marine settings, use the A4 (316) version instead: Imperial Square Drive Countersunk Decking Screw - 316 Stainless Steel.

Related products

Other versions in this range: Square Drive Trim Head Decking Screw Stainless Steel and Square Drive Trim Head Decking Screw A4 (316).