Screw, nail and hardware calculators
Which screw, how long, and how far apart: screw length, nail sizes, what a screw or nail holds, tap and clearance drills, bolt spacing, concrete screws, dowels and biscuits, clamps for a glue-up, and where the hinges, knobs and pulls go.
- Screw length
How long a screw to put through one board into another, and whether the tip comes out the far side.
- Screw and nail holding strength
What a screw, nail or lag holds before it pulls out, by species and by how deep the thread goes.
- Nail sizes
What a 16d actually measures, common against box against finish, and how many come in a pound.
- Tap and clearance drills
The drill for a machine screw or a threaded insert, and the clearance hole in the piece it passes through.
- Bolt and lag spacing
Edge, end and row distances for bolts through a timber, in the multiples of diameter the NDS sets.
- Concrete screw length
Length and embedment for a concrete screw, the bit that goes with it, and how deep to drill.
- Clamping pressure
How many clamps a glue-up takes to reach the pressure the glue maker asks for, and how far apart.
- Dowels and biscuits
Dowel diameter and length by the rule of thirds, which biscuit the stock takes, and how many along the joint.
- Knob and pull placement
Where the bores go for a knob or a pull, in inches or millimetres, centred or set down from the edge.
- Door hinge mortise and placement
Butt hinge size, count and the five-and-ten layout for a passage door, with the mortise depth.