They're your first line of defence against rust and deterioration. Stainless Steel 316 M2 7mm M2 x 0.4mm 4.0mm 60 degree flank self tapping P=1.00mm 3 x milled. Stainless Steel 316 M20 40mm M20 x 2.5mm 30.0mm 60 degree flank self tapping P=3.50mm 3 x milled.
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