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AT Screw / Thread Inserts & Kits

Alfa Tools thread inserts and repair kits offer permanent solutions for restoring stripped, damaged, or worn threads in aluminum, magnesium, cast iron, and other soft metals. Whether you’re fixing stripped spark plug threads, reinforcing aluminum manifolds, or repairing damaged fastener holes, our comprehensive selection includes helical coil (wire thread) inserts, solid screw inserts, NPT pipe thread inserts, and complete repair kits with installation tools. These thread inserts create threads stronger than the original material, prevent future thread damage, and enable the use of standard fasteners in soft metals without the risk of stripping.

Alfa Tools TI66210K 4-40 HELICAL THREAD INSERT KIT

Alfa Tools TI66210K 4-40 HELICAL THREAD INSERT KIT

SKU: AT-TI66210K
MPN: TI66210K

Save $49.37
Alfa Tools TI66211K 4-48 X 1.5D HELICAL THREAD INSERT KIT

Alfa Tools TI66211K 4-48 X 1.5D HELICAL THREAD INSERT KIT

SKU: AT-TI66211K
MPN: TI66211K

Save $49.37
Alfa Tools TI66212K 6-32 HELICAL THREAD INSERT KIT

Alfa Tools TI66212K 6-32 HELICAL THREAD INSERT KIT

SKU: AT-TI66212K
MPN: TI66212K

Save $49.37
Alfa Tools TI66213K 6-40 X1.5D HELICAL THREAD INSERT KIT

Alfa Tools TI66213K 6-40 X1.5D HELICAL THREAD INSERT KIT

SKU: AT-TI66213K
MPN: TI66213K

Save $49.37
Alfa Tools TI66214K 8-32 HELICAL THREAD INSERT KIT

Alfa Tools TI66214K 8-32 HELICAL THREAD INSERT KIT

SKU: AT-TI66214K
MPN: TI66214K

Save $49.37
Alfa Tools TI66215K 8-36 X 1.5D HELICAL THREAD INSERT KIT

Alfa Tools TI66215K 8-36 X 1.5D HELICAL THREAD INSERT KIT

SKU: AT-TI66215K
MPN: TI66215K

Save $44.58
Alfa Tools TI66216K 10-24 HELICAL THREAD INSERT KIT

Alfa Tools TI66216K 10-24 HELICAL THREAD INSERT KIT

SKU: AT-TI66216K
MPN: TI66216K

Save $50.23
Alfa Tools TI66217K 10-32 HELICAL THREAD INSERT KIT

Alfa Tools TI66217K 10-32 HELICAL THREAD INSERT KIT

SKU: AT-TI66217K
MPN: TI66217K

Save $50.23
Alfa Tools TI66220K 1/4-20 HELICAL THREAD INSERT KIT

Alfa Tools TI66220K 1/4-20 HELICAL THREAD INSERT KIT

SKU: AT-TI66220K
MPN: TI66220K

Save $50.64
Alfa Tools TI66221K 1/4-28 HELICAL THREAD INSERT KIT

Alfa Tools TI66221K 1/4-28 HELICAL THREAD INSERT KIT

SKU: AT-TI66221K
MPN: TI66221K

Save $50.64
Alfa Tools TI66222K 5/16-18 HELICAL THREAD INSERT KIT

Alfa Tools TI66222K 5/16-18 HELICAL THREAD INSERT KIT

SKU: AT-TI66222K
MPN: TI66222K

Save $46.65
Alfa Tools TI66223K 5/16-24 HELICAL THREAD INSERT KIT

Alfa Tools TI66223K 5/16-24 HELICAL THREAD INSERT KIT

SKU: AT-TI66223K
MPN: TI66223K

Save $46.65
Alfa Tools TI66224K 3/8-16 HELICAL THREAD INSERT KIT

Alfa Tools TI66224K 3/8-16 HELICAL THREAD INSERT KIT

SKU: AT-TI66224K
MPN: TI66224K

Save $56.62
Alfa Tools TI66225K 3/8-24 HELICAL THREAD INSERT KIT

Alfa Tools TI66225K 3/8-24 HELICAL THREAD INSERT KIT

SKU: AT-TI66225K
MPN: TI66225K

Save $56.62
Alfa Tools TI66226K 7/16-14 HELICAL THREAD INSERT KIT

Alfa Tools TI66226K 7/16-14 HELICAL THREAD INSERT KIT

SKU: AT-TI66226K
MPN: TI66226K

Save $59.71
Alfa Tools TI66227K 7/16-20 HELICAL THREAD INSERT KIT

Alfa Tools TI66227K 7/16-20 HELICAL THREAD INSERT KIT

SKU: AT-TI66227K
MPN: TI66227K

Save $59.71
Alfa Tools TI66228K 1/2-13 HELICAL THREAD INSERT KIT

Alfa Tools TI66228K 1/2-13 HELICAL THREAD INSERT KIT

SKU: AT-TI66228K
MPN: TI66228K

Save $71.34
Alfa Tools TI66229K 1/2-20 HELICAL THREAD INSERT KIT

Alfa Tools TI66229K 1/2-20 HELICAL THREAD INSERT KIT

SKU: AT-TI66229K
MPN: TI66229K

Save $71.34
Alfa Tools TI66230K 5/8-11 HELICAL THREAD INSERT KIT

Alfa Tools TI66230K 5/8-11 HELICAL THREAD INSERT KIT

SKU: AT-TI66230K
MPN: TI66230K

Save $117.37
Alfa Tools TI66232K 3/4-10 HELICAL THREAD INSERT KIT

Alfa Tools TI66232K 3/4-10 HELICAL THREAD INSERT KIT

SKU: AT-TI66232K
MPN: TI66232K

Save $166.74
Alfa Tools TI66233K 5/8-18 X 1.5D HELICAL THREAD INSERT KIT

Alfa Tools TI66233K 5/8-18 X 1.5D HELICAL THREAD INSERT KIT

SKU: AT-TI66233K
MPN: TI66233K

Save $117.37
Alfa Tools TI66234K 7/8-9 X 1.5D HELICAL THREAD INSERT KIT

Alfa Tools TI66234K 7/8-9 X 1.5D HELICAL THREAD INSERT KIT

SKU: AT-TI66234K
MPN: TI66234K

Save $221.61
Alfa Tools TI66235K 3/4-16 X 1.5D HELICAL THREAD INSERT KIT

Alfa Tools TI66235K 3/4-16 X 1.5D HELICAL THREAD INSERT KIT

SKU: AT-TI66235K
MPN: TI66235K

Save $166.74
Alfa Tools TI66236K 1-8 X 1.5D HELICAL THREAD INSERT KIT

Alfa Tools TI66236K 1-8 X 1.5D HELICAL THREAD INSERT KIT

SKU: AT-TI66236K
MPN: TI66236K

Save $317.30