Huck bolts are industrial fasteners made by Alcoa. You can use them to draw two or more material layers together so they don't come loose by vibration like standard nuts and bolts. After being tightened, Huck fastener collars have a locking ring that is squeezed into a groove on the bolt, which prevents the bolt and collar from rotating loose. The best method to remove a Huck bolt is to drill off its head and push the bolt through the material.
- Skill level:
- Moderately Easy
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Things you need
- Safety glasses
- Center punch
- Drill bit set, 1/16 to 1/4 inch
- Round punch, 1/8 inch in diameter
Put on the safety glasses and place the sharp tip of the centre punch on the centre of the Huck bolt head. Strike the centre punch with the hammer, making an indentation in the bolt head to be used as a starting mark for drilling.
Insert the 1/16-inch drill bit in the drill and tighten the drill chuck. With the drill bit not touching anything, run the drill motor and check that the drill bit tip doesn't wobble. The drill should rotate clockwise. If the bit wobbles, remove it and reinstall it so it's centred. Change the drill's direction if it's turning counterclockwise.
Place the drill bit's tip in the starting mark on the Huck bolt head and rotate the drill slowly. Increase the speed and pressure on the drill gradually until the bit starts cutting the Huck bolt. Maintain the speed and pressure until the hole is 1/2 inches deep. Remove the drill bit from the hole. Repeat with the progressively larger bits in the drill bit set until the Huck bolt's head comes off.
Place the round punch where the Huck bolt head was and strike it with the hammer. Repeat until the Huck bolt is all the way out.
Clean up the drill bit shavings, bolt head and bolt shank from the work area.
Tips and warnings
- Don't apply excessive pressure to the drill.
- Don't skip drill sizes.
- Don't drill into the material surrounding the fastener.
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