ACube Fasteners manufacturer, supplier of Square Head Screw, Bolts in Nashik from Pune, Maharashtra. FOUR SIDED HEAD WITH ACROSS FLAT EQUAL ON ALL SIDES. Square Head Screw & Bolts are available in metric thread sizes ranging from M 6 through to M10, and lengths of between 15MM TO 75 mm as standard. Non-standard dimensions are also available on request. Square Head Screw & Bolts are available in metric thread sizes ranging from M2.5 through to M10, and lengths of between 6 mm up to 100 mm as standard. Non-standard dimensions are also available on request.