Gruvell Bolts

Gruvell Bolts is a metric fastener bench reference. Measure a bolt you can't name, read off its thread pitch and drill sizes, and keep track of what's in your parts drawers. Identify Enter a head width across flats or a thread outer diameter and Gruvell Bolts matches it to the nearest standard size, then shows the coarse and fine pitch, the tap-drill and clearance-hole diameters, the head across-flats and the hex-key size. Or pick a size from the list and read its full specification outright. Thread chart The complete M2 to M24 chart in one scrollable list: coarse and fine pitch, tap drill, clearance hole, head across-flats and hex key for every size. Filter by size when you already know what you're after. My box Log the fasteners you actually own — size, length, type, quantity and where they live. A running count of items and distinct sizes sits at the top, so you can see what to restock before the next job. Projects Group fasteners by the job they belong to. Start a project, see the parts assigned to it and keep a note of what each build needs. Built for the workbench: plain labels, large numbers and a layout that reads at arm's length. **What's new:** Version 1.0: the size finder, the full M2 to M24 thread chart, a fastener box with quantities and locations, and project lists to group parts by job.

Gruvell Bolts