AT Threading Tools
AT Threading Tools | Professional Metal Fabrication Solutions | Freer Tool
Shop professional-grade AT threading tools for precision metal fabrication and manufacturing.
Discover the AT Threading Tools collection at Freer Tool & Supply—your destination for high-precision taps, dies, thread repair kits, and specialty threading accessories. Engineered for accuracy, durability, and consistent performance, our threading tools are ideal for creating, repairing, and maintaining threads in metalworking, maintenance, and fabrication projects. Whether you’re working in a machine shop, repair facility, or industrial setting, AT Threading Tools deliver the reliability and results professionals count on.
MonoLock®, AlfaUSA®, and EcoPro® are industry-trusted brands available exclusively from Alfa Tools.
New for 2015 in Taps | Dies | Extractors | Thread | Inserts | Accessories
- high-performance coated taps, including multi-purpose taps
- specialty taps for low tensile and high tensile materials
- black oxide coated taps
- an enhanced range of standard special thread taps and dies
- Helical Thread Inserts
- screw Extractors
- tap Extractors
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Alfa Tools ST66546 3/4-10 HSS SCREW THREAD INSERT TAPS
SKU: AT-ST66546
MPN: ST66546
Alfa Tools ST66547 3/4-16 HSS SCREW THREAD INSERT TAPS
SKU: AT-ST66547
MPN: ST66547
Alfa Tools ST66548 7/8-9 HSS SCREW THREAD INSERT TAPS
SKU: AT-ST66548
MPN: ST66548
Alfa Tools ST66548A 7/8-14 HSS SCREW THREAD INSERT TAPS
SKU: AT-ST66548A
MPN: ST66548A
Alfa Tools ST66549 1-8 HSS SCREW THREAD INSERT TAPS
SKU: AT-ST66549
MPN: ST66549
Alfa Tools ST66549A 1-12 HSS SCREW THREAD INSERT TAPS
SKU: AT-ST66549A
MPN: ST66549A
Alfa Tools ST66549B 1-14 HSS SCREW THREAD INSERT TAPS
SKU: AT-ST66549B
MPN: ST66549B
Alfa Tools ST66550 M5 X .8 MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66550
MPN: ST66550
Alfa Tools ST66551 6 X 1.0 MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66551
MPN: ST66551
Alfa Tools ST66552 8 X 1.25MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66552
MPN: ST66552
Alfa Tools ST66552A 8 X 1.0 MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66552A
MPN: ST66552A
Alfa Tools ST66553 9 X 1.25MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66553
MPN: ST66553
Alfa Tools ST66554 10 X 1.25MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66554
MPN: ST66554
Alfa Tools ST66554A 10 X 1.0 MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66554A
MPN: ST66554A
Alfa Tools ST66555 10 X 1.50MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66555
MPN: ST66555
Alfa Tools ST66556 11 X 1.25MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66556
MPN: ST66556
Alfa Tools ST66557 11 X 1.50MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66557
MPN: ST66557
Alfa Tools ST66558 12 X 1.25MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66558
MPN: ST66558
Alfa Tools ST66559 12 X 1.50MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66559
MPN: ST66559
Alfa Tools ST66560 12 X 1.75MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66560
MPN: ST66560
Alfa Tools ST66561 14 X 1.50MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66561
MPN: ST66561
Alfa Tools ST66561A 14 X 1.25 MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66561A
MPN: ST66561A
Alfa Tools ST66562 14 X 2.0MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66562
MPN: ST66562
Alfa Tools ST66563 16 X 1.50MM HSS METRIC SCREW THREAD INSERT TAP
SKU: AT-ST66563
MPN: ST66563