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Keylocking Thread Inserts

In stock

Quickly repair stripped, damaged or worn out threads with a new stronger thread using keylocking inserts. Keylocking inserts are easily installed using standard drills and taps. Once the locking keys are driven down, the insert is tightly locked and will not turn. Steel inserts are C1215, parkerized. Stainless inserts are 303, passivated. Internal threads are class 2B, external threads are 2A. Inserts with internal thread size 5⁄16 or M7 and larger have four locking keys. Smaller sizes have two locking keys. Solid inserts allow you to relocate or fill in holes that are too large. All the inserts listed are in stock for same day shipment.

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24 results
Product SKUs information
Item Code Price range Availability Insert Length Minimum Internal Thread Size Special Offer Maximum Internal Thread Size Brand View
$9.76 - $9.76 306 In stock
0.500 in
3/8-16
Reid Select
$6.37 - $6.37 Request the lead time here
0.430 in
5/16-24
Reid Select
$5.13 - $5.13 100 In stock
0.430 in
5/16-18
Reid Select
$10.71 - $10.71 9 In stock
0.870 in
5/8-18
Reid Select
$5.29 - $5.29 67 In stock
0.310 in
#10-24
Reid Select
$9.76 - $9.76 Request the lead time here
0.500 in
3/8-24
Reid Select
$16.20 - $16.20 519 In stock
0.500 in
3/8-16
Reid Select
$9.21 - $9.21 Request the lead time here
0.500 in
3/8-24
Reid Select
$12.80 - $12.80 21 In stock
0.430 in
5/16-18
Reid Select
$5.73 - $5.73 51 In stock
0.37 in
1/4-20
Reid Select
$14.66 - $14.66 Request the lead time here
0.620 in
7/16-20
Reid Select
$3.92 - $3.92 84 In stock
0.37 in
1/4-20
Reid Select
$8.29 - $8.29 62 In stock
0.430 in
5/16-18
Reid Select
$4.07 - $4.07 342 In stock
0.310 in
#10-32
Reid Select
$9.12 - $9.12 Request the lead time here
0.430 in
5/16-24
Reid Select
$7.20 - $7.20 36 In stock
0.37 in
1/4-20
Reid Select
$18.89 - $18.89 Request the lead time here
0.500 in
3/8-16
Reid Select
$4.17 - $4.17 Request the lead time here
0.37 in
1/4-28
Reid Select
$3.87 - $3.87 13 In stock
0.310 in
#10-24
Reid Select
$8.33 - $8.33 Request the lead time here
0.620 in
1/2-13
Reid Select
  • of 2
Key locking Thread Insert; , Maximum Internal Thread Size=3/8-16, Insert Length=12.7 mm | 0.500 in

KLI-66304

Price Range
$9.76 - $9.76

Stock Levels
306 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66304
  • Maximum Internal Thread Size
    3/8-16
  • Maximum External Thread Size
    9/16-12
  • Insert Length
    0.500 in
Key locking Thread Insert; , Maximum Internal Thread Size=5/16-24, Insert Length=10.9 mm | 0.430 in

KLI-66503

Price Range
$6.37 - $6.37

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66503
  • Maximum Internal Thread Size
    5/16-24
  • Maximum External Thread Size
    1/2-13
  • Insert Length
    0.430 in
Key locking Thread Insert; , Maximum Internal Thread Size=5/16-18, Insert Length=10.9 mm | 0.430 in

KLI-66323

Price Range
$5.13 - $5.13

Stock Levels
100 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66323
  • Maximum Internal Thread Size
    5/16-18
  • Maximum External Thread Size
    7/16-14
  • Insert Length
    0.430 in
Key locking Thread Insert; , Maximum Internal Thread Size=5/8-18, Insert Length=22.1 mm | 0.870 in

KLI-66508

Price Range
$10.71 - $10.71

Stock Levels
9 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66508
  • Maximum Internal Thread Size
    5/8-18
  • Maximum External Thread Size
    7/8-14
  • Insert Length
    0.870 in
Key locking Thread Insert; , Maximum Internal Thread Size=#10-24, Insert Length=7.9 mm | 0.310 in

KLI-66321

Price Range
$5.29 - $5.29

Stock Levels
67 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66321
  • Maximum Internal Thread Size
    #10-24
  • Maximum External Thread Size
    5/16-18
  • Insert Length
    0.310 in
Key locking Thread Insert; , Maximum Internal Thread Size=3/8-24, Insert Length=12.7 mm | 0.500 in

KLI-66504

Price Range
$9.76 - $9.76

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66504
  • Maximum Internal Thread Size
    3/8-24
  • Maximum External Thread Size
    9/16-12
  • Insert Length
    0.500 in
Key locking Thread Insert; , Maximum Internal Thread Size=3/8-16, Insert Length=12.7 mm | 0.500 in

KLI-71304

Price Range
$16.20 - $16.20

Stock Levels
519 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    69304
  • Maximum Internal Thread Size
    3/8-16
  • Maximum External Thread Size
    9/16-12
  • Insert Length
    0.500 in
Key locking Thread Insert; , Maximum Internal Thread Size=3/8-24, Insert Length=12.7 mm | 0.500 in

KLI-66524

Price Range
$9.21 - $9.21

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66524
  • Maximum Internal Thread Size
    3/8-24
  • Maximum External Thread Size
    1/2-13
  • Insert Length
    0.500 in
Key locking Thread Insert; , Maximum Internal Thread Size=5/16-18, Insert Length=10.9 mm | 0.430 in

KLI-71323

Price Range
$12.80 - $12.80

Stock Levels
21 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    69323
  • Maximum Internal Thread Size
    5/16-18
  • Maximum External Thread Size
    7/16-14
  • Insert Length
    0.430 in
Key locking Thread Insert; , Maximum Internal Thread Size=1/4-20, Insert Length=9.4 mm | 0.37 in

KLI-66322

Price Range
$5.73 - $5.73

Stock Levels
51 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66322
  • Maximum Internal Thread Size
    1/4-20
  • Maximum External Thread Size
    3/8-16
  • Insert Length
    0.37 in
Key locking Thread Insert; , Maximum Internal Thread Size=7/16-20, Insert Length=15.7 mm | 0.620 in

KLI-66505

Price Range
$14.66 - $14.66

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66505
  • Maximum Internal Thread Size
    7/16-20
  • Maximum External Thread Size
    5/8-11
  • Insert Length
    0.620 in
Key locking Thread Insert; , Maximum Internal Thread Size=1/4-20, Insert Length=9.4 mm | 0.37 in

KLI-71322

Price Range
$3.92 - $3.92

Stock Levels
84 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    69322
  • Maximum Internal Thread Size
    1/4-20
  • Maximum External Thread Size
    3/8-16
  • Insert Length
    0.37 in
Key locking Thread Insert; , Maximum Internal Thread Size=5/16-18, Insert Length=10.9 mm | 0.430 in

KLI-66303

Price Range
$8.29 - $8.29

Stock Levels
62 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66303
  • Maximum Internal Thread Size
    5/16-18
  • Maximum External Thread Size
    1/2-13
  • Insert Length
    0.430 in
Key locking Thread Insert; , Maximum Internal Thread Size=#10-32, Insert Length=7.9 mm | 0.310 in

KLI-66501

Price Range
$4.07 - $4.07

Stock Levels
342 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66501
  • Maximum Internal Thread Size
    #10-32
  • Maximum External Thread Size
    3/8-16
  • Insert Length
    0.310 in
Key locking Thread Insert; , Maximum Internal Thread Size=5/16-24, Insert Length=10.9 mm | 0.430 in

KLI-66523

Price Range
$9.12 - $9.12

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66523
  • Maximum Internal Thread Size
    5/16-24
  • Maximum External Thread Size
    7/16-14
  • Insert Length
    0.430 in
Key locking Thread Insert; , Maximum Internal Thread Size=1/4-20, Insert Length=9.4 mm | 0.37 in

KLI-66302

Price Range
$7.20 - $7.20

Stock Levels
36 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66302
  • Maximum Internal Thread Size
    1/4-20
  • Maximum External Thread Size
    7/16-14
  • Insert Length
    0.37 in
Key locking Thread Insert; , Maximum Internal Thread Size=3/8-16, Insert Length=12.7 mm | 0.500 in

KLI-66336

Price Range
$18.89 - $18.89

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66336
  • Maximum Internal Thread Size
    3/8-16
  • Maximum External Thread Size
    5/8-11
  • Insert Length
    0.500 in
Key locking Thread Insert; , Maximum Internal Thread Size=1/4-28, Insert Length=9.4 mm | 0.37 in

KLI-66522

Price Range
$4.17 - $4.17

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66522
  • Maximum Internal Thread Size
    1/4-28
  • Maximum External Thread Size
    3/8-16
  • Insert Length
    0.37 in
Key locking Thread Insert; , Maximum Internal Thread Size=#10-24, Insert Length=7.9 mm | 0.310 in

KLI-66301

Price Range
$3.87 - $3.87

Stock Levels
13 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66301
  • Maximum Internal Thread Size
    #10-24
  • Maximum External Thread Size
    3/8-16
  • Insert Length
    0.310 in
Key locking Thread Insert; , Maximum Internal Thread Size=1/2-13, Insert Length=15.7 mm | 0.620 in

KLI-66326

Price Range
$8.33 - $8.33

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66326
  • Maximum Internal Thread Size
    1/2-13
  • Maximum External Thread Size
    5/8-11
  • Insert Length
    0.620 in