Collection: Thread Repair - Inserts - Keylocking

12 Products in this selection
  • Steel or 303 Stainless Steel as indicated in the tables. Also known as keenserts.
  • Steel or 303 Stainless Steel as indicated in the tables
  • Maximum strength and reliability.
  • Positive mechanical lock against rotation:.
  • The insert kees are driven down into the tapped threads of the parent material during installation to securely lock the insert against rotation.
  • Inserts with internal thread lock are designed to securely lock a bolt when it is entered into the insert only a few turns.
Additional resources:
Keysteel Catalogue PDF

A more comprehensive listing may be found on the MBA Minibearings main store at Thread Repair - Inserts - Keylocking.
Internal Thread External Thread Length Tap Drill Diameter Countersink Diameter Locking Keys Indicative
Image
M4 (4x0.7mm)
M8 x 1.25
8.000
mm
6.90
mm
8.250
mm
4
1053988 | KLI-040M-080-08 --- Inserts Thread Repair - M4 -4x0.7mm- M8 x 1.25 8 mm - Steel
Material: Steel    Tapped Hole Depth: 9.500 mm    Removal Drill Size: 5.500 mm    Removal Drill Depth: 4.000 mm    Installation Tool: KLI-64763RS   
Part Number: KLI-040M-080-08 Inserts Thread Repair - M4 -4x0.7mm- M8 x 1.25 8 mm - Steel
2 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $45.68 AUD
Regular price Sale price $45.68 AUD
Each
Internal Thread External Thread Length Tap Drill Diameter Indicative
Image
M4 (4x0.7mm)
M8 x 1.25
8.000
mm
6.90
mm
1053988 | KLI-040M-080-08 --- Inserts Thread Repair - M4 -4x0.7mm- M8 x 1.25 8 mm - Steel
Material: Steel    Countersink Diameter: 8.250 mm    Locking Keys: 4    Tapped Hole Depth: 9.500 mm    Removal Drill Size: 5.500 mm    Removal Drill Depth: 4.000 mm    Installation Tool: KLI-64763RS   
Part Number: KLI-040M-080-08 Inserts Thread Repair - M4 -4x0.7mm- M8 x 1.25 8 mm - Steel
2 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $45.68 AUD
Regular price Sale price $45.68 AUD
Each
View the product page first if you are unsure.
M5 (5x0.8mm)
M8 x 1.25
8.00
mm
6.90
mm
8.25
mm
2
1062501 | KLI-050M-080-08-SS --- Inserts Thread Repair - M5 -5x0.8mm- M8 x 1.25 8 mm - Stainless Steel
Material: Stainless Steel    Tapped Hole Depth: 9.50 mm    Removal Drill Size: 5.50 mm    Removal Drill Depth: 4.00 mm    Installation Tool: KLI-64751RS   
Part Number: KLI-050M-080-08-SS Inserts Thread Repair - M5 -5x0.8mm- M8 x 1.25 8 mm - Stainless Steel
1 Available Now | Further orders can be expected around Sun, May 18, 2025
Regular price $33.86 AUD
Regular price $40.64 AUD Sale price $33.86 AUD
Each
M5 (5x0.8mm)
M8 x 1.25
8.00
mm
6.90
mm
1062501 | KLI-050M-080-08-SS --- Inserts Thread Repair - M5 -5x0.8mm- M8 x 1.25 8 mm - Stainless Steel
Material: Stainless Steel    Countersink Diameter: 8.25 mm    Locking Keys: 2    Tapped Hole Depth: 9.50 mm    Removal Drill Size: 5.50 mm    Removal Drill Depth: 4.00 mm    Installation Tool: KLI-64751RS   
Part Number: KLI-050M-080-08-SS Inserts Thread Repair - M5 -5x0.8mm- M8 x 1.25 8 mm - Stainless Steel
1 Available Now | Further orders can be expected around Sun, May 18, 2025
Regular price $33.86 AUD
Regular price $40.64 AUD Sale price $33.86 AUD
Each
View the product page first if you are unsure.
M5 (5x0.8mm)
M8 x 1.25
8.000
mm
6.90
mm
8.250
mm
4
1062502 | KLI-050M-080-08 --- Inserts Thread Repair - M5 -5x0.8mm- M8 x 1.25 8 mm - Steel
Material: Steel    Tapped Hole Depth: 9.500 mm    Removal Drill Size: 5.500 mm    Removal Drill Depth: 4.000 mm    Installation Tool: KLI-64751RS   
Part Number: KLI-050M-080-08 Inserts Thread Repair - M5 -5x0.8mm- M8 x 1.25 8 mm - Steel
6 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $13.14 AUD
Regular price Sale price $13.14 AUD
Each
M5 (5x0.8mm)
M8 x 1.25
8.000
mm
6.90
mm
1062502 | KLI-050M-080-08 --- Inserts Thread Repair - M5 -5x0.8mm- M8 x 1.25 8 mm - Steel
Material: Steel    Countersink Diameter: 8.250 mm    Locking Keys: 4    Tapped Hole Depth: 9.500 mm    Removal Drill Size: 5.500 mm    Removal Drill Depth: 4.000 mm    Installation Tool: KLI-64751RS   
Part Number: KLI-050M-080-08 Inserts Thread Repair - M5 -5x0.8mm- M8 x 1.25 8 mm - Steel
6 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $13.14 AUD
Regular price Sale price $13.14 AUD
Each
View the product page first if you are unsure.
M6 (6x1mm)
M10 x 1.25
10.00
mm
8.80
mm
10.25
mm
2
1067689 | KLI-060M-100-10-SS --- Inserts Thread Repair - M6 -6x1mm- M10 x 1.25 10 mm - Stainless Steel
Material: Stainless Steel    Tapped Hole Depth: 11.50 mm    Removal Drill Size: 7.50 mm    Removal Drill Depth: 4.75 mm   
Part Number: KLI-060M-100-10-SS Inserts Thread Repair - M6 -6x1mm- M10 x 1.25 10 mm - Stainless Steel
1 Available Now | Further orders can be expected around Sun, May 18, 2025
Regular price $31.05 AUD
Regular price $37.25 AUD Sale price $31.05 AUD
Each
M6 (6x1mm)
M10 x 1.25
10.00
mm
8.80
mm
1067689 | KLI-060M-100-10-SS --- Inserts Thread Repair - M6 -6x1mm- M10 x 1.25 10 mm - Stainless Steel
Material: Stainless Steel    Countersink Diameter: 10.25 mm    Locking Keys: 2    Tapped Hole Depth: 11.50 mm    Removal Drill Size: 7.50 mm    Removal Drill Depth: 4.75 mm   
Part Number: KLI-060M-100-10-SS Inserts Thread Repair - M6 -6x1mm- M10 x 1.25 10 mm - Stainless Steel
1 Available Now | Further orders can be expected around Sun, May 18, 2025
Regular price $31.05 AUD
Regular price $37.25 AUD Sale price $31.05 AUD
Each
View the product page first if you are unsure.
M6 (6x1mm)
M10 x 1.25
10.000
mm
8.80
mm
10.250
mm
4
1067690 | KLI-060M-100-10 --- Inserts Thread Repair - M6 -6x1mm- M10 x 1.25 10 mm - Steel
Material: Steel    Tapped Hole Depth: 11.500 mm    Removal Drill Size: 7.500 mm    Removal Drill Depth: 4.750 mm    Installation Tool: KLI-64752RS   
Part Number: KLI-060M-100-10 Inserts Thread Repair - M6 -6x1mm- M10 x 1.25 10 mm - Steel
1 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $15.05 AUD
Regular price Sale price $15.05 AUD
Each
M6 (6x1mm)
M10 x 1.25
10.000
mm
8.80
mm
1067690 | KLI-060M-100-10 --- Inserts Thread Repair - M6 -6x1mm- M10 x 1.25 10 mm - Steel
Material: Steel    Countersink Diameter: 10.250 mm    Locking Keys: 4    Tapped Hole Depth: 11.500 mm    Removal Drill Size: 7.500 mm    Removal Drill Depth: 4.750 mm    Installation Tool: KLI-64752RS   
Part Number: KLI-060M-100-10 Inserts Thread Repair - M6 -6x1mm- M10 x 1.25 10 mm - Steel
1 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $15.05 AUD
Regular price Sale price $15.05 AUD
Each
View the product page first if you are unsure.
1/4-20 UNC (6.35mm)
3/8-16 UNC (9.53mm)
9.398
mm
8.43
mm
9.652
mm
4
1072797 | KLI-064C-095-09 --- Inserts Thread Repair - 1/4-20 UNC -6.35mm- 3/8-16 UNC -9.53mm- 9.398 mm - Steel
Material: Steel    Tapped Hole Depth: 10.922 mm    Removal Drill Size: 7.144 mm    Removal Drill Depth: 3.175 mm    Installation Tool: KLI-64722RS   
Part Number: KLI-064C-095-09 Inserts Thread Repair - 1/4-20 UNC -6.35mm- 3/8-16 UNC -9.53mm- 9.398 mm - Steel
10 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $9.59 AUD
Regular price Sale price $9.59 AUD
Each
1/4-20 UNC (6.35mm)
3/8-16 UNC (9.53mm)
9.398
mm
8.43
mm
1072797 | KLI-064C-095-09 --- Inserts Thread Repair - 1/4-20 UNC -6.35mm- 3/8-16 UNC -9.53mm- 9.398 mm - Steel
Material: Steel    Countersink Diameter: 9.652 mm    Locking Keys: 4    Tapped Hole Depth: 10.922 mm    Removal Drill Size: 7.144 mm    Removal Drill Depth: 3.175 mm    Installation Tool: KLI-64722RS   
Part Number: KLI-064C-095-09 Inserts Thread Repair - 1/4-20 UNC -6.35mm- 3/8-16 UNC -9.53mm- 9.398 mm - Steel
10 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $9.59 AUD
Regular price Sale price $9.59 AUD
Each
View the product page first if you are unsure.
5/16-24 UNF (7.94mm)
7/16-14 UNC (11.11mm)
10.922
mm
10.00
mm
11.176
mm
4
1079754 | KLI-079F-111-11 --- Inserts Thread Repair - 5/16-24 UNF -7.94mm- 7/16-14 UNC -11.11mm- 10.922 mm - Steel
Material: Steel    Tapped Hole Depth: 12.700 mm    Removal Drill Size: 8.731 mm    Removal Drill Depth: 4.763 mm    Installation Tool: KLI-64723RS   
Part Number: KLI-079F-111-11 Inserts Thread Repair - 5/16-24 UNF -7.94mm- 7/16-14 UNC -11.11mm- 10.922 mm - Steel
12 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $5.59 AUD
Regular price $6.71 AUD Sale price $5.59 AUD
Each
5/16-24 UNF (7.94mm)
7/16-14 UNC (11.11mm)
10.922
mm
10.00
mm
1079754 | KLI-079F-111-11 --- Inserts Thread Repair - 5/16-24 UNF -7.94mm- 7/16-14 UNC -11.11mm- 10.922 mm - Steel
Material: Steel    Countersink Diameter: 11.176 mm    Locking Keys: 4    Tapped Hole Depth: 12.700 mm    Removal Drill Size: 8.731 mm    Removal Drill Depth: 4.763 mm    Installation Tool: KLI-64723RS   
Part Number: KLI-079F-111-11 Inserts Thread Repair - 5/16-24 UNF -7.94mm- 7/16-14 UNC -11.11mm- 10.922 mm - Steel
12 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $5.59 AUD
Regular price $6.71 AUD Sale price $5.59 AUD
Each
View the product page first if you are unsure.
M8 (8x1.25mm)
M14 x1.5
14.00
mm
12.80
mm
14.25
mm
4
1082146 | KLI-080M-140-14-SS --- Inserts Thread Repair - M8 -8x1.25mm- M14 x1.5 14 mm - Stainless Steel
Material: Stainless Steel    Tapped Hole Depth: 15.50 mm    Removal Drill Size: 11.50 mm    Removal Drill Depth: 4.75 mm    Installation Tool: KLI-64766RS   
Part Number: KLI-080M-140-14-SS Inserts Thread Repair - M8 -8x1.25mm- M14 x1.5 14 mm - Stainless Steel
3 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $49.59 AUD
Regular price Sale price $49.59 AUD
Each
M8 (8x1.25mm)
M14 x1.5
14.00
mm
12.80
mm
1082146 | KLI-080M-140-14-SS --- Inserts Thread Repair - M8 -8x1.25mm- M14 x1.5 14 mm - Stainless Steel
Material: Stainless Steel    Countersink Diameter: 14.25 mm    Locking Keys: 4    Tapped Hole Depth: 15.50 mm    Removal Drill Size: 11.50 mm    Removal Drill Depth: 4.75 mm    Installation Tool: KLI-64766RS   
Part Number: KLI-080M-140-14-SS Inserts Thread Repair - M8 -8x1.25mm- M14 x1.5 14 mm - Stainless Steel
3 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $49.59 AUD
Regular price Sale price $49.59 AUD
Each
View the product page first if you are unsure.
M10 Fine (10x1.25mm)
M14 x1.5
14.000
mm
12.80
mm
14.250
mm
4
1090443 | KLI-100MF-140-14 (2 Pcs) --- Inserts Thread Repair - M10 Fine -10x1.25mm- M14 x1.5 14 mm - Steel
Material: Steel    Tapped Hole Depth: 15.500 mm    Removal Drill Size: 11.500 mm    Removal Drill Depth: 4.750 mm    Installation Tool: KLI-64755RS Non Standard   
Part Number: KLI-100MF-140-14 (2 Pcs) Inserts Thread Repair - M10 Fine -10x1.25mm- M14 x1.5 14 mm - Steel
3 units (6 pcs) Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $4.05 AUD
Regular price Sale price $4.05 AUD
Per 2
M10 Fine (10x1.25mm)
M14 x1.5
14.000
mm
12.80
mm
1090443 | KLI-100MF-140-14 (2 Pcs) --- Inserts Thread Repair - M10 Fine -10x1.25mm- M14 x1.5 14 mm - Steel
Material: Steel    Countersink Diameter: 14.250 mm    Locking Keys: 4    Tapped Hole Depth: 15.500 mm    Removal Drill Size: 11.500 mm    Removal Drill Depth: 4.750 mm    Installation Tool: KLI-64755RS Non Standard   
Part Number: KLI-100MF-140-14 (2 Pcs) Inserts Thread Repair - M10 Fine -10x1.25mm- M14 x1.5 14 mm - Steel
3 units (6 pcs) Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $4.05 AUD
Regular price Sale price $4.05 AUD
Per 2
View the product page first if you are unsure.
M10 (10x1.5mm)
M16 x1.5
16.000
mm
14.75
mm
16.250
mm
4
1092474 | KLI-100M-160-16 --- Inserts Thread Repair - M10 -10x1.5mm- M16 x1.5 16 mm - Steel
Material: Steel    Tapped Hole Depth: 17.500 mm    Removal Drill Size: 13.500 mm    Removal Drill Depth: 4.750 mm    Installation Tool: KLI-64767RS   
Part Number: KLI-100M-160-16 Inserts Thread Repair - M10 -10x1.5mm- M16 x1.5 16 mm - Steel
1 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $38.05 AUD
Regular price Sale price $38.05 AUD
Each
M10 (10x1.5mm)
M16 x1.5
16.000
mm
14.75
mm
1092474 | KLI-100M-160-16 --- Inserts Thread Repair - M10 -10x1.5mm- M16 x1.5 16 mm - Steel
Material: Steel    Countersink Diameter: 16.250 mm    Locking Keys: 4    Tapped Hole Depth: 17.500 mm    Removal Drill Size: 13.500 mm    Removal Drill Depth: 4.750 mm    Installation Tool: KLI-64767RS   
Part Number: KLI-100M-160-16 Inserts Thread Repair - M10 -10x1.5mm- M16 x1.5 16 mm - Steel
1 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $38.05 AUD
Regular price Sale price $38.05 AUD
Each
View the product page first if you are unsure.
M12 (12x1.75mm)
M16 x1.5
16.00
mm
14.75
mm
16.25
mm
4
1098828 | KLI-120M-160-16-SS --- Inserts Thread Repair - M12 -12x1.75mm- M16 x1.5 16 mm - Stainless Steel
Material: Stainless Steel    Tapped Hole Depth: 17.50 mm    Removal Drill Size: 13.50 mm    Removal Drill Depth: 4.75 mm    Installation Tool: KLI-64769RS   
Part Number: KLI-120M-160-16-SS Inserts Thread Repair - M12 -12x1.75mm- M16 x1.5 16 mm - Stainless Steel
1 Available Now | Further orders can be expected around Sun, May 18, 2025
Regular price $92.41 AUD
Regular price $110.89 AUD Sale price $92.41 AUD
Each
M12 (12x1.75mm)
M16 x1.5
16.00
mm
14.75
mm
1098828 | KLI-120M-160-16-SS --- Inserts Thread Repair - M12 -12x1.75mm- M16 x1.5 16 mm - Stainless Steel
Material: Stainless Steel    Countersink Diameter: 16.25 mm    Locking Keys: 4    Tapped Hole Depth: 17.50 mm    Removal Drill Size: 13.50 mm    Removal Drill Depth: 4.75 mm    Installation Tool: KLI-64769RS   
Part Number: KLI-120M-160-16-SS Inserts Thread Repair - M12 -12x1.75mm- M16 x1.5 16 mm - Stainless Steel
1 Available Now | Further orders can be expected around Sun, May 18, 2025
Regular price $92.41 AUD
Regular price $110.89 AUD Sale price $92.41 AUD
Each
View the product page first if you are unsure.
M12 (12x1.75mm)
M18 x1.5
18.000
mm
16.75
mm
18.250
mm
4
1099059 | KLI-120M-180-18 --- Inserts Thread Repair - M12 -12x1.75mm- M18 x1.5 18 mm - Steel
Material: Steel    Tapped Hole Depth: 20.500 mm    Removal Drill Size: 15.500 mm    Removal Drill Depth: 4.750 mm    Installation Tool: KLI-64769RS   
Part Number: KLI-120M-180-18 Inserts Thread Repair - M12 -12x1.75mm- M18 x1.5 18 mm - Steel
2 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $42.86 AUD
Regular price Sale price $42.86 AUD
Each
M12 (12x1.75mm)
M18 x1.5
18.000
mm
16.75
mm
1099059 | KLI-120M-180-18 --- Inserts Thread Repair - M12 -12x1.75mm- M18 x1.5 18 mm - Steel
Material: Steel    Countersink Diameter: 18.250 mm    Locking Keys: 4    Tapped Hole Depth: 20.500 mm    Removal Drill Size: 15.500 mm    Removal Drill Depth: 4.750 mm    Installation Tool: KLI-64769RS   
Part Number: KLI-120M-180-18 Inserts Thread Repair - M12 -12x1.75mm- M18 x1.5 18 mm - Steel
2 Available Now | Further orders can be expected around Fri, May 02, 2025
Regular price $42.86 AUD
Regular price Sale price $42.86 AUD
Each
View the product page first if you are unsure.