Heads up: many models on this page are AI-generated or uploaded untested. They may be misconfigured for the intended application — check the dimensions and tolerances, and verify or edit the model before printing or relying on it.*
M3 M4 M5 Rivnut Setting Nut Wrench
This is a 150 x 24 x 12 mm handle for setting rivnuts (threaded inserts for thin sheet metal) with a hardware-store bolt, a hex nut and a washer instead of a $30 setting tool. It has three captive nut sockets: M3 (5.7 mm), M5 (8.2 mm) and M4 (7.2 mm) across flats. Each socket has a clearance bore through the 6 mm floor. To use it, thread the bolt fully into the rivnut and hold the bolt still with a hex key. Then turn the bar so the captive nut drives down onto the washer and collapses the rivnut.
M3–M10 Rivnut Graduated Sort Tray
A 152 x 76 x 22 mm tray with six cells for rivet nuts (rivnuts). The cells get wider with thread size: 16, 18, 20, 24, 28 and 32 mm, for M3, M4, M5, M6, M8 and M10. A front gauge ledge has a through-hole in front of each cell (3.4, 4.5, 5.5, 6.6, 9.0 and 11.0 mm, the ISO medium clearance sizes). Drop your install mandrel or bolt into a hole to check which cell it matches, so you never have to dump out a mixed bag and guess the thread size by eye again.