Mon–Thu 08:30–17:00 · Fri 08:30–16:00 · Same-day collection from Daventry NN11

sales@danetreworkshop.co.uk

Size picker · Fully threaded · DIN 933

Hex setscrew sizes.

A setscrew is threaded all the way to the head. Pick a diameter and a length below and you get the figures that matter — across flats for the spanner, head height for the clearance, and thread pitch — with the fastener drawn to proportion in the finish you're after.

1 Pick a diameter

2 Pick a length

Choose a diameter first.

3 Finish

Finish

4 Grade

Grade
Read the full DIN 933 size chart
DIN 933 hex setscrew sizes. Diameters down the side, lengths in millimetres across the top.
Size 3 4 5 6 8 10 12 14 16 18 20 22 25 28 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 140 145 150 160 170 180 190 200 220 240 250 290
M2
M2.5
M3
M4
M5
M6
M8
M10
M12
M14
M16
M18
M20
M22
M24
M27
M30
M33
M36
M39
M42
M48

The range shown is what fastener wholesalers commonly list — not a claim about what the standard mandates, and not a stock list. In-between lengths (85, 95, 170…), lengths past 300mm and odd diameters like M7 are made too, and availability varies by finish and grade — ask us for anything you can't see.

Setscrew or bolt?

In the trade a setscrew is threaded all the way up to the head, and a bolt has a plain unthreaded shank under it. That is the only difference between DIN 933 and DIN 931, and it matters more than it sounds: a plain shank is what gives a joint its shear strength and locates it properly in a reamed hole. Thread running through that hole instead will let the joint move.

If you need the plain shank, you want the hex bolt sizes instead.

Not sure which you need?

Bring the old one in, or send us a photo. We are on Baird Close in Daventry with metric and imperial stock across the common grades and finishes.

EST. 2002 · DAVENTRY · NN11 8RY

Need it today? Talk to the counter.

Call before 17:00 (16:00 Fridays) for same-day collection from Daventry, or next-day delivery nationwide.

Online shop launching soon. Until then, order by phone or email — same trade prices.

Call 01327 877577 Get a quote