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Stripped Screw Removal Bits


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Hints for Correctly Using NBK Products

The video is an example using SKEIB-PH(SKEIB-PH). You can perform the same operation using this product.

Dimension Drawing

SKEIBStripped Screw Removal Bits寸法図


Unit : mm

Part Number S
Nominal of Applicable Hexagonal Width Across Flats
A D D1 L Mass
SKEIB-1.5 1.5 2.3 8.8 13 23 24 14.62 CAD Cart
SKEIB-2 2 3 8.8 13 23 24 14.62 CAD Cart
SKEIB-2.5 2.5 3.9 8.8 13 23 25 14.62 CAD Cart
SKEIB-3 3 4.5 8.8 13 23 26 14.62 CAD Cart
SKEIB-4 4 6 8.8 13 23 29 14.62 CAD Cart


Shaft Part Alloy Steel
Zinc Phosphate Film
Grip Thermoplastic Elastomer + Polypropylene Blended Molding


For stripped screws that cannot be removed with an ordinary tool


  • A tool that can remove hex socket head cap screws with crushed or stripped hex sockets that cannot be removed by ordinary tools.
  • Used to create grooves in damaged recesses which can be used to turn and remove the screws. For details, refer to "How to Remove Screws".

SKEIBStripped Screw Removal Bits

  • Can be used with the impact screwdriver SKEID to turn screws in the loosening direction by applying impact.
  • Can also remove flat head screws that cannot be gripped with a tool such as a wrench or screws in counterbored holes.
  • The recess is compatible with hex socket screws.

Usage Example

For cases where recesses are damaged due to tool cam-out.
For cases where recesses are damaged due to turning tools with shallow contact.
For cases where recesses are crushed due to rust or corrosion from long-term exposure to outdoor environments.
For cases where recesses are damaged due to attempts to forcibly remove tightly stuck screws.
For cases where recesses are damaged due to usage of incorrect sizes of tools.

Precautions for Use

  • Do not use for purposes other than removing screws with damaged recesses.
  • Use SKEIB in combination with SKEID.
  • Use a bit suitable for the recess of the screw.
  • Hitting with a hammer will transmit the impact to the part where the screw is attached. The impact may be absorbed without creating a groove, or the mounting area may be damaged.
  • Do not use for screws with low recess strength such as resin screws, as they may be damaged further.
  • Striking with excessive force may damage the screw further, or damage the bit.
  • The tip of SKEIB is sharp, so be careful to avoid injury.
  • When using a hammer, be careful not to accidentally hit your hands or fingers.
  • Do not use in locations exposed to live wires, as it is made of metal.
  • Be sure to wear safety glasses while working.

How to Remove Screws

① Place the applicable stripped screw removal bit SKEIB vertically to the damaged recess and hit the end of the shaft with a hammer to form a groove on the screw head.

SKEIBStripped Screw Removal Bits

② Mount SKEIB on the impact screwdriver SKEID. Place the SKEIB tip vertically against the groove made in the screw head, firmly hold the SKEID grip, and hit the end with a hammer to rotate the SKEID tip up to 45°*1 and loosen the screw.

SKEIBStripped Screw Removal Bits

*1: Gently push the SKEID adapter in while turning it, and align the △ mark in the loosening direction. L left rotation / R right rotation

SKEIBStripped Screw Removal Bits

The rotational direction of SKEID may change depending on the impact. To avoid this, hammer while applying force in the desired direction.

③ Make sure that the screw is loosened and turn SKEID by hand to remove the screw.

SKEIBStripped Screw Removal Bits

Related Products

SKEIDImpact screwdriver

SKEIBStripped Screw Removal Bits

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