• Special Screws
  • Tool


Hexagon Socket (with Screw Holding Function)

  • Easy to Use

Hints for Correctly Using NBK Products

The video is an example using SKCK-9.5(SKCK-9.5). You can perform the same operation using this product.

Dimension Drawing

SKCK-6.35Hexagon Socket (with Screw Holding Function)寸法図



B Nominal of Width Across Flats

Unit : mm

Part Number B Nominal of Width Across Flats Lb Insertion Angle t D D1 L Qty per Pack Mass
CAD Standard
SKCK-7-6.35 7 6.35 4 11.3 11.2 18 1 8 20.45 CAD Cart
SKCK-8-6.35 8 6.35 5 12.3 11.2 18 1 9 20.45 CAD Cart

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Main Body SCM435
Nickel Chrome Plating
Wire Ring SWPA


For narrow areas where screws cannot be retained by hand, during assembly/maintenance of devices, equipment, vehicles and so on
For preventing screws from falling into devices, such as food processing equipment where mechanical parts must be excluded, during maintenance


  • A socket which holds hex head screws/bolts and hex nuts.
  • The two balls pressed into the wire ring facing inwards hold hex head screws/bolts and hex nuts within the socket and prevent falling.

SKCK-6.35Hexagon Sockets (with Screw Holding Function)

  • Unlike magnetic holding methods, it can be used with hex head screws/bolts and hex nuts of any material. There is also no adherence of foreign matter due to socket magnetism.
  • It can be used just like ordinary sockets.
  • The insertion angle is 6.35.

Usage Example

For mounting and removal of screws in deep areas where hex head screws/bolts and hex nuts cannot be retained by hand.

SKCK-6.35Hexagon Sockets (with Screw Holding Function)

When mounting or removing hex head screws/bolts and hex nuts in narrow vertical areas, use a commercially available extension bar.

SKCK-6.35Hexagon Sockets (with Screw Holding Function)

Precautions for Use

  • Use a size matching the nominal of width across flats.
  • Retention may not be possible according to the dimensions and specifications of the hexagon.
  • Insert firmly until hex head screws/bolts and hex nuts are retained.
  • Do not use together with power tools like impact wrenches.
  • Do not use in locations exposed to live wires, as it is made of metal.
  • Do not use for any applications other than for turning screws.

Product List

Customer Service

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NBK America LLC

8:00 to 17:00 on weekdays, Eastern Standard Time