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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
$5.01 - $5.01 51 In stock
0.560 in
7/16-14
Reid Select
$3.87 - $3.87 13 In stock
0.310 in
#10-24
Reid Select
$3.12 - $3.12 96 In stock
0.37 in
1/4-20
Reid Select
$3.82 - $3.82 489 In stock
0.500 in
3/8-16
Reid Select
$5.80 - $5.80 120 In stock
0.620 in
1/2-13
Reid Select
$3.40 - $3.40 76 In stock
0.430 in
5/16-18
Reid Select
$2.08 - $2.08 20 In stock
0.430 in
5/16-24
Reid Select
$17.33 - $17.33 Request the lead time here
0.68 in
1/2-13
Reid Select
$18.89 - $18.89 Request the lead time here
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
$34.24 - $34.24 44 In stock
1.370 in
1-8
Reid Select
$12.67 - $12.67 54 In stock
1.120 in
3/4-10
Reid Select
$5.80 - $5.80 143 In stock
0.620 in
1/2-13
Reid Select
$1.27 - $1.27 23 In stock
0.430 in
5/16-24
Reid Select
$2.17 - $2.17 18 In stock
0.620 in
1/2-20
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
  • of 3
Key locking Thread Insert; , Maximum Internal Thread Size=7/16-14, Insert Length=14.2 mm | 0.560 in

KLI-65925

Price Range
$5.01 - $5.01

Stock Levels
51 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65925
  • Maximum Internal Thread Size
    7/16-14
  • Maximum External Thread Size
    9/16-12
  • Insert Length
    0.560 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=1/4-20, Insert Length=9.4 mm | 0.37 in

KLI-65902

Price Range
$3.12 - $3.12

Stock Levels
96 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-65924

Price Range
$3.82 - $3.82

Stock Levels
489 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65924
  • Maximum Internal Thread Size
    3/8-16
  • Maximum External Thread Size
    1/2-13
  • Insert Length
    0.500 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
120 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=5/16-18, Insert Length=10.9 mm | 0.430 in

KLI-65903

Price Range
$3.40 - $3.40

Stock Levels
76 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65903
  • 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=5/16-24, Insert Length=10.9 mm | 0.430 in

KLI-66123

Price Range
$2.08 - $2.08

Stock Levels
20 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66123
  • 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=1/2-13, Insert Length=17.3 mm | 0.68 in

KLI-65938

Price Range
$17.33 - $17.33

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65938
  • Maximum Internal Thread Size
    1/2-13
  • Maximum External Thread Size
    7/8-14
  • Insert Length
    0.68 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=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=1-8, Insert Length=34.8 mm | 1.370 in

KLI-65911

Price Range
$34.24 - $34.24

Stock Levels
44 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65911
  • Maximum Internal Thread Size
    1-8
  • Maximum External Thread Size
    1-3/8-12
  • Insert Length
    1.370 in
Key locking Thread Insert; , Maximum Internal Thread Size=3/4-10, Insert Length=28.4 mm | 1.120 in

KLI-65909

Price Range
$12.67 - $12.67

Stock Levels
54 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65909
  • Maximum Internal Thread Size
    3/4-10
  • Maximum External Thread Size
    1-1/8-12
  • Insert Length
    1.120 in
Key locking Thread Insert; , Maximum Internal Thread Size=1/2-13, Insert Length=15.7 mm | 0.620 in

KLI-65926

Price Range
$5.80 - $5.80

Stock Levels
143 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65926
  • 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=5/16-24, Insert Length=10.9 mm | 0.430 in

KLI-66103

Price Range
$1.27 - $1.27

Stock Levels
23 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66103
  • 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=1/2-20, Insert Length=15.7 mm | 0.620 in

KLI-66126

Price Range
$2.17 - $2.17

Stock Levels
18 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66126
  • Maximum Internal Thread Size
    1/2-20
  • Maximum External Thread Size
    5/8-11
  • Insert Length
    0.620 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