HDG Round Head Guardrail Splice Bolts and Nuts Carbon Steel Grade 4.8 8.8 10.9 12.9

These HDG round head guardrail splice bolts and nuts are designed for highway guardrail connection, road barrier installation, steel plate fastening, construction hardware, outdoor infrastructure, and industrial assembly. The semi-round head design gives the exposed side a smoother surface, making it suitable for guardrail and barrier fastening where both connection strength and installation appearance are important.