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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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58 results
Product SKUs information
Item Code Price range Availability Insert Length Minimum Internal Thread Size Special Offer Maximum Internal Thread Size Brand View
$10.71 - $10.71 9 In stock
0.870 in
5/8-18
Reid Select
$16.80 - $16.80 Request the lead time here
0.310 in
#6-32
Reid Select
$2.80 - $2.80 30 In stock
0.620 in
7/16-20
Reid Select
$2.07 - $2.07 83 In stock
0.472 in
M8 x 1
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
$5.29 - $5.29 55 In stock
0.310 in
#10-32
Reid Select
$12.80 - $12.80 21 In stock
0.430 in
5/16-18
Reid Select
$8.33 - $8.33 Request the lead time here
0.620 in
1/2-13
Reid Select
$13.17 - $13.17 40 In stock
1.250 in
7/8-9
Reid Select
$3.05 - $3.05 13 In stock
0.310 in
#10-24
Reid Select
$5.80 - $5.80 111 In stock
0.620 in
1/2-13
Reid Select
$3.05 - $3.05 33 In stock
0.310 in
#10-32
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 - $16.20 319 In stock
0.500 in
3/8-16
Reid Select
$3.12 - $3.12 71 In stock
0.37 in
1/4-20
Reid Select
$3.82 - $3.82 202 In stock
0.500 in
3/8-16
Reid Select
$3.40 - $3.40 250 In stock
0.430 in
5/16-18
Reid Select
  • of 3
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=#6-32, Insert Length=7.9 mm | 0.310 in

KLI-65931

Price Range
$16.80 - $16.80

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65931
  • Maximum Internal Thread Size
    #6-32
  • Maximum External Thread Size
    5/16-18
  • Insert Length
    0.310 in
Key locking Thread Insert; , Maximum Internal Thread Size=7/16-20, Insert Length=15.7 mm | 0.620 in

KLI-66105

Price Range
$2.80 - $2.80

Stock Levels
30 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66105
  • 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=M8 x 1, Insert Length=12.0 mm | 0.472 in

KLI-66153

Price Range
$2.07 - $2.07

Stock Levels
83 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66153
  • Maximum Internal Thread Size
    M8 x 1
  • Maximum External Thread Size
    M12 x 1.25
  • Insert Length
    0.472 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=#10-32, Insert Length=7.9 mm | 0.310 in

KLI-66521

Price Range
$5.29 - $5.29

Stock Levels
55 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66521
  • Maximum Internal Thread Size
    #10-32
  • Maximum External Thread Size
    5/16-18
  • Insert Length
    0.310 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=1/2-13, 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
Key locking Thread Insert; , Maximum Internal Thread Size=7/8-9, Insert Length=31.8 mm | 1.250 in

KLI-65910

Price Range
$13.17 - $13.17

Stock Levels
40 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65910
  • Maximum Internal Thread Size
    7/8-9
  • Maximum External Thread Size
    1-1/4-12
  • Insert Length
    1.250 in
Key locking Thread Insert; , Maximum Internal Thread Size=#10-24, Insert Length=7.9 mm | 0.310 in

KLI-65921

Price Range
$3.05 - $3.05

Stock Levels
13 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65921
  • 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=1/2-13, Insert Length=15.7 mm | 0.620 in

KLI-65906

Price Range
$5.80 - $5.80

Stock Levels
111 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65906
  • Maximum Internal Thread Size
    1/2-13
  • Maximum External Thread Size
    3/4-16
  • Insert Length
    0.620 in
Key locking Thread Insert; , Maximum Internal Thread Size=#10-32, Insert Length=7.9 mm | 0.310 in

KLI-66101

Price Range
$3.05 - $3.05

Stock Levels
33 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66101
  • 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=#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
319 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=1/4-20, Insert Length=9.4 mm | 0.37 in

KLI-65902

Price Range
$3.12 - $3.12

Stock Levels
71 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65902
  • 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-65904

Price Range
$3.82 - $3.82

Stock Levels
202 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65904
  • 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=5/16-18, Insert Length=10.9 mm | 0.430 in

KLI-65923

Price Range
$3.40 - $3.40

Stock Levels
250 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65923
  • Maximum Internal Thread Size
    5/16-18
  • Maximum External Thread Size
    7/16-14
  • Insert Length
    0.430 in