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UNC 4/40 Socket Cap Screw High Tensile 12.9 Self Colour DIN912 – Fixaball Ltd. Fixings and Fasteners UK
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4-40 UNC x 1/2 inch Phillips Pan Head Machine Screws (ANSI B18.6.3) - A2 Stainless Steel: Accu.co.uk: Precision Screws
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