AT Screw / Thread Inserts & Kits

AT screw thread inserts and kits are used to repair stripped or damaged internal threads and restore a reliable fastening point (application dependent). Thread repair inserts are commonly used in maintenance and fabrication work on components made from aluminum, steel, and other metals when threads have been over-torqued, cross-threaded, or worn. Using an insert can help bring a hole back to a standard fastener size and improve durability compared to a damaged base thread.


Alfa Tools SI67534 5/16-18 NC SOLID THREAD INSERT EXTRA HEAVY DUTY - Std Qty Pack 10

Alfa Tools SI67534 5/16-18 NC SOLID THREAD INSERT EXTRA HEAVY DUTY - Std Qty Pack 10

SKU: AT-SI67534
MPN: SI67534

Sale price $2.16 List price $4.30
Save $2.14
Alfa Tools SI67535 3/8-16 NC SOLID THREAD INSERT EXTRA HEAVY DUTY - Std Qty Pack 10

Alfa Tools SI67535 3/8-16 NC SOLID THREAD INSERT EXTRA HEAVY DUTY - Std Qty Pack 10

SKU: AT-SI67535
MPN: SI67535

Sale price $2.60 List price $5.19
Save $2.59
Alfa Tools SI67536 1/2-13 NC SOLID THREAD INSERT EXTRA HEAVY DUTY - Std Qty Pack 10

Alfa Tools SI67536 1/2-13 NC SOLID THREAD INSERT EXTRA HEAVY DUTY - Std Qty Pack 10

SKU: AT-SI67536
MPN: SI67536

Sale price $3.77 List price $7.52
Save $3.75
Alfa Tools SI67537 5/8-11 NC SOLID THREAD INSERT EXTRA HEAVY DUTY - Std Qty Pack 5

Alfa Tools SI67537 5/8-11 NC SOLID THREAD INSERT EXTRA HEAVY DUTY - Std Qty Pack 5

SKU: AT-SI67537
MPN: SI67537

Sale price $4.91 List price $9.78
Save $4.87