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Rampa - Hex Driver Bit

RAMPA Drivers Type 506 with hexagonal shank according to DIN 3126-Form E 6,3.


  • 4mm driver bit works with the bolts (506400)
  • 6mm driver bit works with the inserts (506600)
Size: 4mm
Original price $8.50 - Original price $8.50
Original price
$8.50 - $8.50
Current price $8.50
Ordering Information

In-Store Pickup: Most orders are completed within 2 business days. We will contact you via email when your order is ready for pickup.

Shipping: Most orders are packaged and ready for shipping within 2 to 4 business days of ordering.

For more information on Shipping & Returns click here.

Customer Reviews

Based on 36 reviews
Doug Davies (Bracebridge, CA)
Rampa insert nuts

Got these nuts took one too a machine shop and got a 1/2 13 tap to thread the hole much easier to get the bolt in especially in very hardwood

john obrien (Fenelon Falls, CA)
Rampa Bolts head seems a bit soft?

I found the Rampa inserts to be great but found the Rampa bolts heads to chew up very easily. Definitely not new to using hex heads, my tools are top notch. Just seemed difficult to not chew up the bolts when slowly tightening.

Judy Buerk (Vancouver, CA)
Feedback on c-channel order

5 stars ! They worked perfectly for our project .. will use them again ..

Thank you for your excellent service.