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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 TI66210 4-40 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66210 4-40 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66210
MPN: TI66210

Alfa Tools TI66210B 4-40 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66210B 4-40 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66210B
MPN: TI66210B

Alfa Tools TI66211 4-48 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66211 4-48 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66211
MPN: TI66211

Alfa Tools TI66211B 4-48 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66211B 4-48 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66211B
MPN: TI66211B

Alfa Tools TI66212 6-32 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66212 6-32 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66212
MPN: TI66212

Alfa Tools TI66212B 6-32 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66212B 6-32 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66212B
MPN: TI66212B

Alfa Tools TI66213 6-40 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66213 6-40 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66213
MPN: TI66213

Alfa Tools TI66213B 6-40 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66213B 6-40 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66213B
MPN: TI66213B

Alfa Tools TI66214 8-32 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66214 8-32 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66214
MPN: TI66214

Alfa Tools TI66214B 8-32 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66214B 8-32 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66214B
MPN: TI66214B

Alfa Tools TI66215 8-36 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66215 8-36 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66215
MPN: TI66215

Alfa Tools TI66215B 8-36 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66215B 8-36 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66215B
MPN: TI66215B

Alfa Tools TI66216 10-24 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66216 10-24 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66216
MPN: TI66216

Alfa Tools TI66216B +10-24 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66216B +10-24 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66216B
MPN: TI66216B

Alfa Tools TI66217 10-32 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66217 10-32 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66217
MPN: TI66217

Alfa Tools TI66217B 10-32 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66217B 10-32 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66217B
MPN: TI66217B

Alfa Tools TI66220 1/4-20 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66220 1/4-20 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66220
MPN: TI66220

Alfa Tools TI66220B 1/4-20 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66220B 1/4-20 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66220B
MPN: TI66220B

Alfa Tools TI66221 1/4-28 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66221 1/4-28 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66221
MPN: TI66221

Alfa Tools TI66221B 1/4-28 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66221B 1/4-28 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66221B
MPN: TI66221B

Alfa Tools TI66222 5/16-18 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66222 5/16-18 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66222
MPN: TI66222

Alfa Tools TI66222B 5/16-18 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66222B 5/16-18 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66222B
MPN: TI66222B

Alfa Tools TI66223 5/16-24 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66223 5/16-24 X 1.5D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66223
MPN: TI66223

Alfa Tools TI66223B 5/16-24 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

Alfa Tools TI66223B 5/16-24 X 2D HELICAL THREAD INSERT - Std Qty Pack 10

SKU: AT-TI66223B
MPN: TI66223B