A big plus of the time saving face projection welding bolt is that it works really well on fast, automated assembly lines. Welding each one takes almost no time—usually just a fraction of a second.
That exceptional speed makes it ideal for large-scale manufacturing, especially in car factories. It outperforms regular fasteners, which need manual alignment and steps, and slower welding requiring preheating and setups. In auto production, where every second counts for daily assembly of thousands of vehicles, this speed cuts downtime, speeds cycles, and boosts output without losing quality—key for cost-effectiveness.
Mon | M4 | M5 | M6 | M8 | M10 | M12 |
P | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 |
dk max | 11.5 | 12.5 | 14.5 | 19 | 21 | 24 |
dk min | 11.23 | 12.23 | 14.23 | 18.67 | 20.67 | 23.67 |
k max | 2 | 2.5 | 2.5 | 3.5 | 4 | 5 |
k min | 1.75 | 2.25 | 2.25 | 3.25 | 3.75 | 4.75 |
r min | 0.2 | 0.2 | 0.3 | 0.3 | 0.4 | 0.4 |
d1 max | 8.75 | 9.75 | 10.75 | 14.25 | 16.25 | 18.75 |
d1 min | 8.5 | 9.5 | 10.5 | 14 | 16 | 18.5 |
h max | 1.25 | 1.25 | 1.25 | 1.45 | 1.45 | 1.65 |
h min | 0.9 | 0.9 | 0.9 | 1.1 | 1.1 | 1.1 |
d0 max | 2.6 | 2.6 | 2.6 | 3.1 | 3.1 | 3.6 |
d0 min | 2.4 | 2.4 | 2.4 | 2.9 | 2.9 | 3.4 |
Time saving face projection welding bolts make really strong, dependable joints. The weld connects the metals at a molecular level, which is better than just using mechanical fasteners.
When the bolt’s projections and the base metal melt together, they form a weld nugget. This nugget can handle a lot of pulling and sliding force—important for parts that need to be safe and hold up to constant movement over the product’s life.
Most time saving face projection welding bolts are made from low to medium carbon steel—like C1008, C1010, C1018. It welds well and doesn’t cost too much, which is why it’s used a lot.
If you need to use it in harsh environments, you can try our products. Stainless steel is very common, such as A2 (actually AISI 304) or A4 (AISI 316). However, no matter which stainless steel you choose, if you want a stable and uniform joint, you must use the "projection welding" method.