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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
$7.20 - $7.20 36 In stock
0.37 in
1/4-20
Reid Select
$27.96 - $27.96 Request the lead time here
0.500 in
3/8-16
Reid Select
$3.40 - $3.40 76 In stock
0.430 in
5/16-18
Reid Select
$3.12 - $3.12 148 In stock
0.37 in
1/4-20
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
$2.08 - $2.08 20 In stock
0.430 in
5/16-24
Reid Select
$5.80 - $5.80 120 In stock
0.620 in
1/2-13
Reid Select
$3.82 - $3.82 489 In stock
0.500 in
3/8-16
Reid Select
$3.82 - $3.82 202 In stock
0.500 in
3/8-16
Reid Select
$3.40 - $3.40 270 In stock
0.430 in
5/16-18
Reid Select
$12.67 - $12.67 54 In stock
1.120 in
3/4-10
Reid Select
$17.33 - $17.33 Request the lead time here
0.68 in
1/2-13
Reid Select
$21.27 - $21.27 15 In stock
0.870 in
5/8-11
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
$4.17 - $4.17 Request the lead time here
0.37 in
1/4-28
Reid Select
$3.12 - $3.12 36 In stock
0.37 in
1/4-28
Reid Select
$5.29 - $5.29 55 In stock
0.310 in
#10-32
Reid Select
$3.05 - $3.05 33 In stock
0.310 in
#10-32
Reid Select
  • of 3
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
$27.96 - $27.96

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=5/16-18, 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=1/4-20, Insert Length=9.4 mm | 0.37 in

KLI-65922

Price Range
$3.12 - $3.12

Stock Levels
148 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65922
  • 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=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=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=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=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=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
270 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
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=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=5/8-11, Insert Length=22.1 mm | 0.870 in

KLI-65940

Price Range
$21.27 - $21.27

Stock Levels
15 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65940
  • Maximum Internal Thread Size
    5/8-11
  • Maximum External Thread Size
    1-12
  • Insert Length
    0.870 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
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=1/4-28, Insert Length=9.4 mm | 0.37 in

KLI-66122

Price Range
$3.12 - $3.12

Stock Levels
36 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66122
  • 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=#10-32, 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=#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