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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
$3.05 - $3.05 115 In stock
0.310 in
#10-32
Reid Select
$1.67 - $1.67 35 In stock
0.310 in
#8-32
Reid Select
$5.21 - $5.21 9 In stock
0.500 in
3/8-16
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 - $16.20 541 In stock
0.500 in
3/8-16
Reid Select
$5.29 - $5.29 55 In stock
0.310 in
#10-32
Reid Select
$3.40 - $3.40 276 In stock
0.430 in
5/16-18
Reid Select
$21.27 - $21.27 15 In stock
0.870 in
5/8-11
Reid Select
$3.12 - $3.12 96 In stock
0.37 in
1/4-20
Reid Select
$34.24 - $34.24 44 In stock
1.370 in
1-8
Reid Select
$22.24 - $22.24 Request the lead time here
0.37 in
1/4-20
Reid Select
$4.73 - $4.73 7 In stock
1.120 in
3/4-16
Reid Select
$14.17 - $14.17 Request the lead time here
0.787 in
M14 x 1.5
Reid Select
$5.13 - $5.13 100 In stock
0.430 in
5/16-18
Reid Select
  • of 3
Key locking Thread Insert; , Maximum Internal Thread Size=#10-32, Insert Length=7.9 mm | 0.310 in

KLI-66121

Price Range
$3.05 - $3.05

Stock Levels
115 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66121
  • 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=#8-32, Insert Length=7.9 mm | 0.310 in

KLI-66300

Price Range
$1.67 - $1.67

Stock Levels
35 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66300
  • Maximum Internal Thread Size
    #8-32
  • Maximum External Thread Size
    5/16-18
  • Insert Length
    0.310 in
Key locking Thread Insert; , Maximum Internal Thread Size=3/8-16, Insert Length=12.7 mm | 0.500 in

KLI-66324

Price Range
$5.21 - $5.21

Stock Levels
9 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66324
  • 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-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
541 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=#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-65923

Price Range
$3.40 - $3.40

Stock Levels
276 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=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=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=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=1/4-20, Insert Length=9.4 mm | 0.37 in

KLI-65934

Price Range
$22.24 - $22.24

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    65934
  • Maximum Internal Thread Size
    1/4-20
  • Maximum External Thread Size
    1/2-13
  • Insert Length
    0.37 in
Key locking Thread Insert; , Maximum Internal Thread Size=3/4-16, Insert Length=28.4 mm | 1.120 in

KLI-66109

Price Range
$4.73 - $4.73

Stock Levels
7 In stock
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66109
  • Maximum Internal Thread Size
    3/4-16
  • Maximum External Thread Size
    1-1/8-12
  • Insert Length
    1.120 in
Key locking Thread Insert; , Maximum Internal Thread Size=M14 x 1.5, Insert Length=20.0 mm | 0.787 in

KLI-66170

Price Range
$14.17 - $14.17

Stock Levels
Request the lead time here
Attributes
  • Brand
    Reid Select
  • Manufacturer Part Number
    66170
  • Maximum Internal Thread Size
    M14 x 1.5
  • Maximum External Thread Size
    M20 x 1.5
  • Insert Length
    0.787 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