• Special Screws
  • Washers・Insert


Key locking threaded insert for thread reinforcement

  • Nonmagnetic
  • High strength
  • Easy to Use

Dimension Drawing

SHINSKey locking threaded insert for thread reinforcement寸法図


Unit : mm

Part Number M (Coarse)
Nominal of Thread
Pitch M1 (Fine)
Nominal of Thread
Pitch L Key Quantity Dedicated Mounting Tool Removal Drill Diameter Removal Depth Qty per pack Mass (g) Price
SHINS-M4-M8 M4 0.7 M4 0.7 8 2 SKK-45 5.5 4 1 1.8 27.52 CAD Cart
SHINS-M5-M8 M5 0.8 M5 0.8 8 2 SKK-45 5.5 4 1 1.4 19.52 CAD Cart
SHINS-M6-M10 M6 1 M6 1 10 2 SKK-6 7.5 5 1 3.1 20.62 CAD Cart
SHINS-M8-M12 M8 1.25 M8 1.25 12 4 SKK-8 9.5 5 1 4.8 21.90 CAD Cart
SHINS-M10-M14 M10 1.5 M10 1.5 14 4 SKK-10 11.5 5 1 6.7 23.14 CAD Cart
SHINS-M12-M16 M12 1.75 M12 1.75 16 4 SKK-12 13.5 5 1 8.9 27.52 CAD Cart

Related Services


Main Body SUS303
Key SUS302


Reinforcement/repair of female threading
Equipment and device structures / General industrial machines


  • A keyed female-thread reinforcing insert.
  • The key mechanically locks the rotation so there is no risk of it falling out.
  • With the high strength of integrated stainless steel, it is usable for firm fastening or in areas where bolts are frequently fastened and removed.
  • It is ideal for reinforcing female threading in light metals, castings, resin etc., as well as for repairing damaged female threading.
  • No special technique is required for insertion.
  • Mounting is even easier than with coil-type inserts. Use the dedicated tool SKKSKK).
  • Coil-type inserts and special surface treatment specifications are also available. Please contact our customer service.

SHINSKey locking threaded insert for thread reinforcement


  1. Set the key in the dedicated mounting tool hole, and screw the insert into the female thread. Diagram 1
  2. Remove the key from the dedicated tool hole. With the key in contact with the dedicated tool end face, drive in the key using a hand press or hammer. Diagram 2
  3. When projection of the key is a concern, the key can be pushed in beyond the chamfered portion by reversing the dedicated tool and driving the key in using the knurled end face. Diagram 3

SHINS/SKKKey locking threaded insert for thread reinforcement


  1. Machine to the depth specified in the dimension table, using the specified drill size. Diagram 1
  2. Tip the key over in the hole, break it, and remove it. Diagram 2
  3. Remove the insert using a commercially available bolt remover or similar. Diagram 3
  4. Mount a new insert following the mounting method. Diagram 4

SHINS/SKKKey locking threaded insert for thread reinforcement

Product List

Most Read