M8 x 12mm Knurled Thumb Screw A1 Stainless Steel, DIN 464. KNURLED THUMB SCREWS A2 STAINLESS STEEL HAND GRIP KNOB BOLTS. £4.69 M5 Thumb Screws Knurled Thumb Screws Znc Plated Steel Hand Grp Knob Bolts M3 M4 M5 M6 M5 Knurled Thumb The 'knurled' feature of the head makes this type of screw ideal for use where conditions can be challenging such as food preparation or clean room operations M5 x 12 Stainless Steel Thumb Screws, DIN 464., Thread Diameter - 5mm, Thread Pitch - 0., 8mm, Thread Length - 12mm, Head Diameter - 20mm, Head Height - 4mm, Shoulder Diameter - 10mm, Shoulder Height - 7., 5mm 50 Pcs) M5-0.8 x 12mm DIN 464, Metric, Thumb Screws, Knurled Flat Head, High Type, Stainless Steel Knurled For Extra Grip When Turning