You lock the padlock onto the bolt and have the spectator hold the keys, you place the bolt under the table for only a second, you now bring up the ring and then the bolt with the nut and lock still on it.
eBay
Hex Socket Screw Kit DIN912 Black Grade 12.9 Carbon Steel Hexagon Round Cap Allen Bolt Nut Washer M2 M3 M4 M5 M6 Machine Screws
Aliexpress UK
The Magician shuffles 3 cards and places them face down next to each other. A Spectator chooses one of the cards. The Magician shows the Spectator 3 separated nuts and bolts each with a different coloured sleeve as well as a plastic bottle.
eBay
400/300/100PCS Copper Washer Gasket Nut and Bolt Set Sealing Solid Gasket Washer Flat Ring Seal Assortment Kit For Sump Plugs
Aliexpress UK
You lock the padlock onto the bolt and have the spectator hold the keys, you place the bolt under the table for only a second, you now bring up the ring and then the bolt with the nut and lock still on it.
eBay
A Set Triangle Handle Knob Nut Screw Bolt Kit Fasteners Replacement For Honda HAYTER MOUNTFIELD Lawn Mower Accessories
Aliexpress UK
You lock the padlock onto the bolt and have the spectator hold the keys, you place the bolt under the table for only a second, you now bring up the ring and then the bolt with the nut and lock still on it.
eBay
660-Piece Stainless Steel Flat Head Hexagon Nut and Bolt Set - M2, M3, M4 Flat Head Hexagon Socket Head (Wrench)
Aliexpress UK
You lock the padlock onto the bolt and have the spectator hold the keys, you place the bolt under the table for only a second, you now bring up the ring and then the bolt with the nut and lock still on it.
eBay
400/300/100PCS Copper Washer Gasket Nut and Bolt Set Sealing Solid Gasket Washer Flat Ring Seal Assortment Kit For Sump Plugs
Aliexpress UK
First, the magician takes a nut and bolt. Finally, with a magic gesture, the magician makes the nut fall off. Next, he coils the nut on the bolt.
eBay
M2 M2.5 M3 M4 Hex Brass Standoff PCB Motherboard Spacer Screw Nut Thread Pillar Mount Male Female Spacer Bolt Assortment Kit
Aliexpress UK
Magician first demonstrates a bolt and a nut to audiences. Then he randomly choose one of them, and asks the person to fasten the nut onto the bolt a few rounds. The magician puts a spell on the device and the nut gradually moves on its own, no interference by the magician, then spins off from the bolt.
eBay
3045P Hex Hexagon Socket Countersunk Head Screw M2- M8 Carbon Steel Flat Head Bolt and Nut Washer Screws 10.9 Grade Alloy Steel
Aliexpress UK
It contains the gimmicks and batteries inside. The magician passes the separate pieces to the audience for inspection. They look just like any ordinary bolt and nut. You can perform the trick in any condition without practicing any skills.
eBay
3 Pieces Silicone Collapsible Magnetic Parts Tray Screws Bolts Nut Washers Tool Parts Storage Box 3 Size Square Tray Organizer
Aliexpress UK