Hexagonal-head bolts with metric fine pitch thread. Compared with coarse-thread bolts, the finer pitch and larger minor diameter can increase tensile capacity and reduce loosening under vibration. Available in both partial-thread and full-thread forms.

Strength grades offered: 4.8, 8.8, 10.9 and 12.9. Materials include carbon steel, alloy steel and stainless steel (A2-70 / A4-70). Surface treatments available: black oxide, zinc plating, hot-dip galvanizing and Dacromet. Metric fine-thread sizes are available across the usual ranges.

Typical applications include the automobile sector, precision machinery, hydraulic equipment and engineering machinery, and assemblies that require higher preload and improved vibration resistance. Please confirm material, grade, size and finish when specifying.