Carriage Bolt Fully Threaded DIN 603 A2-70 Stainless Steel Key Features ✔️ Conformity Certificate supplied as standard. ✔️ Free tech support, call & speak to one of our experts. Carbolts Precision Technical Information Diameter (d) Pitch dk k v f M5 0.80 13.55-12.45 3.30-2.70 5.48-4.52 4.10-2.90 M6 1.00 16.55-15.45 3.88-3.12 6.48-5.52 4.60-3.40 M8 1.25 20.65-19.35 4.88-4.12 8.58-7.42 5.60-4.40 M10 1.50 24.65-23.35 5.38-4.62 10.58-9.42 6.60-5.40 M12 1.75 30.65-29.35 6.95-6.05 12.70-11.30 8.75-7.25 M16 2.00 38.80-37.20 8.95-8.05 16.70-15.30 12.90-11.10 Sizes in the table are in millimetres. Stainless Steel Fully Threaded Carriage Bolts from Carbolts This fully threaded carriage bolt is manufactured using A2 grade stainless steel (304) to DIN 603 specification, delivering a permanent, corrosion-resistant carriage bolt. The result is a bolt that looks as good on day one as it does years into service, with none of the chipping, fading or rusting that affects cheaper painted mild steel alternatives. A durable look that lasts and lasts The distinctive smooth dome head, square neck and fully threaded shank work together to make installation straightforward and tool-free on the head side — the square neck locks into a corresponding square hole or bites into timber as the nut is tightened, preventing rotation and allowing single-sided assembly. The dome head sits flush and clean against the surface with no exposed drive recess, giving a particularly refined appearance. The fully threaded shank runs the entire length of the bolt, providing maximum flexibility when accommodating varying material thicknesses or cutting to length on site. These bolts are ideal for timber construction, decking, fencing, playground equipment and outdoor structures. Our stainless steel carriage bolts are especially popular for premium garden furniture, architectural timber features, pergolas, gates and balustrades where the fixing itself is part of the aesthetic look. Unlike painted bolts that chip on installation and rust at the fixing point within months of outdoor exposure, stainless steel carriage bolts maintain their appearance for years. If you're looking for a fastener that works outdoors and in high-humidity environments where both appearance and longevity matter, these are the bolts for you. DIN 603 Specification Supplied to DIN 603 with metric thread, available in sizes M5 to M12 and a wide range of lengths. The bolts are compatible with standard metric hex nuts and washers — also available in stainless steel from Carbolts for a fully matched fixing. Material: A2 Stainless Steel (Grade 304) Finish: Natural Stainless Steel Standard: DIN 603 Thread: Metric Fully Threaded Head Style: Round dome with square neck Drive: None – nut-driven only Typical uses: Timber construction, decking, fencing, gates, garden furniture, pergolas, balustrades, playground equipment, architectural metalwork, outdoor structures. Click to download the Carriage Bolt technical information sheet.