M3.5 x 9.5 mm Hex Flange Self-Drilling Screw, 304 Stainless Steel - XDSA2M35X95

Made in 304 (A2) stainless steel, the Metric Hex Flange Self Drilling Screw is a hex head screw with an integral flange and a drill point. The drill point drills its own hole and then forms the thread, so it fixes into steel sheet and light steel framing in one operation.

The A2 (304) stainless material suits indoor, fresh water and typical outdoor use. Where the fastening is exposed to salt air, pool chemicals or marine conditions, A4 (316) is the grade to use instead. Metric sizes are written M followed by the nominal thread diameter in millimetres, so M10 is a 10 mm thread. Gauge sizes are shown as a number followed by G. On this range 6G is 3.5 mm, 8G is 4.2 mm, 10G is 4.8 mm, 12G is 5.5 mm and 14G is 6.3 mm, as listed by the supplier.

You can choose from 46 variants, covering sizes M3.5 to M6.3 and lengths 9.5 mm to 70 mm. Variants are supplied in packs of 200 to 1000, depending on size.

Austenitic stainless steel is generally non-magnetic, although cold-worked parts can show weak magnetism. Use stainless washers and nuts with stainless fasteners, so the whole joint is made of the same material.

Where this product is used

• Ducting and sheet metal fabrication
• Indoor architectural and joinery work
• Fresh water and general outdoor fittings
• Bulk jobs and trade or maintenance stores buying in larger packs
• Kitchen, bathroom and laundry fixtures
• Metal sheet and framing assembly

Features

• A2 (304) stainless steel for indoor, fresh water and general outdoor use
• Metric thread sizes match the nuts, bolts and tapped holes in most Australian-supplied equipment
• Drill point drills and threads in one operation
• Supplied in packs of 200 to 1000
• Integral flange spreads the load like a washer
• Choice of 46 sizes, M3.5 to M6.3

Key specifications

Selecting the right option

Self-drilling screws are intended for thin sheet and light framing. The drilling capacity is not stated in the supplier data, so check it against the material thickness before use. Use a controlled drill speed, because heat builds quickly in stainless steel.