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Keyserts

  • Keyserts (industrial grade keenserts)
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Industrial Grade Keenserts

Keyserts, also known as keenserts, are solid, one piece, key-locking inserts used to repair damaged threads or for use in original equipment. These industrial-grade keyserts feature locking keys that provide a positive mechanical lock, preventing rotation due to vibration or torsion. keyserts are available in carbon or stainless steel, in both inch and metric series.

Keysert Options 

  • Thin wall keyserts
  • Heavy duty keyserts
  • Extra heavy duty keyserts
  • Solid keyserts
Keyserts are available individually or in kits that contain an assortment of sizes. Keysert installation tools are also available separately or in kits.

Features & Benefits of Keysert Threaded Inserts

  • Reliable in the most demanding conditions, including heavy wear and high vibration applications
  • Easy to install and remove with standard drills and taps (see below for installation diagram)
  • Suitable for use in a wide range of materials*: aluminum, magnesium, and cold rolled steel
  • Huge selection of sizes and styles makes it easy to find the right option for your needs
* Note: Keyserts are not recommended for use in brittle materials such as cast iron or plastic.
 
Follow the links below to find the keyserts you need, or use the filters at left to narrow your search. Order keyserts for your application today, request a quote, or contact Jay-Cee Sales & Rivet learn more.

Category Files

 

Keysert Threaded Insert Installation

Steel Keyserts

  • Keysert material: C1215 (or equivalent)
  • Key material: 302 stainless steel
  • Finish: zinc phosphate and Ferrocote 364-3 oil
  • Tolerances: ±0.10”/±0.25mm (unless otherwise specified)
  • Keys: Inserts with internal thread sizes 5/16 or M7 and larger are furnished with four (4) locking keys
  • Available in assortment kits

Stainless Steel Keyserts

  • Keysert material: 303 stainless steel
  • Key material: 302 stainless steel
  • Finish: passivated
  • Tolerances: ±0.10”/±0.25mm (unless otherwise specified)
  • Keys: Insert with internal thread size 5/16 or M7 and larger are furnished with four (4) locking keys
  • Available in assortment kits

Material: STEEL Inserts - C1215 or equivalent
Keys - 302 Stainless Steel
Finish: Carbon Steel Inserts - Zinc Phosphate and Ferrocote 364-3 Oil
Stainless Steel Inserts - Passivated
Tolerances: +0.10 inch or +.25 mm unless specified otherwise.
Keys: Inserts with internal thread size 5/16 or M7 and larger are
furnished with 4 locking keys.

Material: STAINLESS STEEL Inserts - 303 Stainless Steel
Keys - 302 Stainless Steel
Finish: Carbon Steel Inserts - Zinc Phosphate and Ferrocote 364-3 Oil
Stainless Steel Inserts - Passivated
Tolerances: +0.10 inch or +.25 mm unless specified otherwise.
Keys: Inserts with internal thread size 5/16 or M7 and larger are
furnished with 4 locking keys.

Thinwall Inserts Carbon Steel and Stainless Steel
Internal Thread Size Steel Insert No. Stainless Insert No. *External Thread Size (Mod.) Length Installation Data Removal Data
Tap Drill Size C'Sink Dia. Tap Size Insert Tool Part No. Drill
Size Depth
10-24 KI-73601 KI-73606 5/16-18 .31 "I" .32 5/16-18 KS-72190 7/32" 1/8
10-32 KI-74601 KI-74606
1/4-20 KI-73041 KI-73046 3/8-16 .37 "Q" .38 3/8-16 KS-72250 9/32 3/16
1/4-28 KI-74041 KI-74046
5/16-18 KI-73051 KI-73056 7/16-14 .43 "X" .44 7/16-14 KS-72312 11/32 3/16
5/16-24 KI-74051 KI-74056
3/8-16 KI-73061 KI-73066 1/2-13 .50 29/64 .51 1/2-13 KS-72375 13/32 3/16
3/8-24 KI-74061 KI-74066
7/16-14 KI-73071 KI-73076 9/16-12 .56 33/64 .57 9/16-12 KS-72375 15/32 3/16
7/16-20 KI-74071 KI-74076
1/2-13 KI-73081 KI-73086 5/8-11 .62 37/64 .63 5/8-11 KS-72500 17/32 3/16
1/2-20 KI-74081 KI-74086
* For reference only.
Heavy Duty Inserts Carbon Steel and Stainless Steel
Internal Thread Size Steel Insert No. Stainless Steel No. *External Thread Size (Mod.) Length Installation Data Removal Data
Tap Drill Size C'Sink Dia. Tap Size Insert Tool Part No. Drill
Size Depth
8-32 KI-73582 KI-73587 5/16-18 .31 "I" .32 5/16-18 KS-70582 7/32 1/8
10-24 KI-73602 KI-73607 3/8-16 .31 "Q" .38 3/8-16 KS-72190 9/32 1/8
10-32 KI-74602 KI-74607
1/4-20 KI-73042 KI-73047 7/16-14 .37 "X" .44 7/16-14 KS-72250 11/32 3/16
1/4-28 KI-74042 KI-74047
5/16-18 KI-73052 KI-73057 1/2-13 .43 29/64 .51 1/2-13 KS-72312 13/32 3/16
5/16-24 KI-74052 KI-74057
3/8-16 KI-73062 KI-73067 9/16-12 .50 33/64 .57 9/16-12 KS-72375 15/32 3/16
3/8-24 KI-74062 KI-74067
7/16-14 KI-73072 KI-73077 5/8-11 .62 37/64 .63 5/8-11 KS-72375 17/32 3/16
7/16-20 KI-74072 KI-74077
1/2-13 KI-73082 KI-73087 3/4-16 45/64 .76 3/4-16 KS-72500 21/32 3/16
1/2-20 KI-74082 KI-74087
9/16-12 KI-73092 KI-73097 3/4-16 .81 KS-72500
9/16-18 KI-74092 KI-74097
5/8-11 KI-73102 KI-73107 7/8-14 .87 53/64 .88 7/8-14 KS-72625 25/32 3/16
5/8-18 KI-74102 KI-74107
3/4-10 KI-73122 KI-73127 1-1/8-12 1.12 1-1/16 1.14 1-1/8-12 KS-72875 31/32 5/16
3/4-16 KI-74122 KI-74127
7/8-9 KI-73142 KI-73147 1-1/4-12 1.25 1-3/16 1.27 1-1/4-12 KS-72875 1-3/32 5/16
7/8-14 KI-74142 KI-74147
1-8 KI-73162 KI-73167 1-3/8-12 1.37 1-5/16 1.39 1-3/8-12 KS-72100 1-7/32 5/16
1-12 KI-74162 KI-74167
1-14 KI-74162-14 N/A
1-1/8-7 KI-73182 N/A 1-1/2-12 1.62 1-7/16 1.52 1-1/2-12 KS-70182 1-11/32 5/16
1-1/8-12 KI-74182 N/A
1-1/8-18 N/A N/A
1-1/4-7 KI-73202 N/A 1-5/8-12 1.81 1-9/16 1.64 1-5/8-12 KS-70202 1-15/32 5/16
1-1/4-12 KI-74202 N/A
1-1/2-6 KI-73242 N/A 1-7/8-12 2.00 1-13/16 1.89 1-7/8-12 KS-70242 1-23/32 5/16
1-1/2-12 KI-74242 N/A

Thinwall Metric Inserts Carbon Steel and Stainless Steel

Internal Thread Size Steel Insert No. Stainless Steel No. *External Thread Size 6g Length Installation Data Removal Data
Tap Drill Size C'Sink Dia. +.25/-.00 Tap Size 6H Insert Tool Part No. Drill
Size Depth
M5x0.8 KI-75051 KI-75056 M8x1.25 8.0 6.9 8.25 M8x1.25 KS-72190 5.50 4.00
M6x1.0 KI-75061 KI-75066 M10x1.25 10.0 8.8 10.25 M10x1.25 KS-72250 7.50 4.75
M8x1.0 KI-77081 KI-77086 M12x1.25 12.0 10.8 12.25 M12x1.25 KS-72312 9.50
M8x1.25 KI-75081 KI-75086
M10x1.25 KI-77101 KI-77106 M14x1.5 14.0 12.8 14.25 M14x1.5 KS-72375 11.50
M10x1.5 KI-75101 KI-75106
M12x1.25 KI-78121 KI-78126 M16x1.5 16.0 14.75 16.25 M16x1.5 KS-72500 13.50
M12x1.75 KI-75121 KI-75126

Heavy Duty Metric Inserts Carbon Steel and Stainless Steel

Internal Thread Size Steel Part No. Stainless Steel Part No. *External Thread Size (Mod.) Length Installation Data Removal Data
Tap Drill Size C'Sink Dia. Tap Size Insert Tool Part No. Drill
Size Depth
M4x0.7 KI-75042 KI-75047 M8x1.25 8.0 6.90 8.25 M8x1.25 KS-71042 5.50 4.00
M5x0.8 KI-75052 KI-75057 M8x1.25  10.0 8.80 10.25  M10x1.25 KS-72190  7.50 4.75
M6x1.0 KI-75062 KI-75067 M10x1.25 12.0 10.80 12.25 M12x1.25 KS-72250 9.50 4.75
M8x1.0 KI-77082 KI-77087 M12x1.25 14.0 12.80 14.25 M14x1.55 KS-72312 11.50 4.75
M8x1.25 KI-75082 KI-75087
M10x1.25 KI-77102 KI-77107 M16x1.5 16.0 14.75 16.25 M16x1.5 KS-72375 13.50 4.75
M10x1.5 KI-75102 KI-75107
M12x1.25 KI-78122 KI-78127 M18x1.5 18.0 16.75 18.25 M18x1.5 KS-72500 15.50 4.75
M12x1.75 KI-75122 KI-75127
M14x1.5 KI-77142  

Common Keysert Applications

  • Automotive
  • Industrial machinery and equipment
  • Small engine
  • Molds, tool and die
  • MRO Tasks

Contact Us for Steel & Stainless Steel Keyserts

With nearly 150 options to choose from, Jay-Cee Sales & Rivet is sure to have the right keysert threaded inserts for your application. Order yours today, request a quote, or contact us for more information.