For sale is a used Helicoil Coil Sert Prewinder for thread inserting. The size is 3/8"-16. The model number is 7551-6. The prewinder is in good used condition and ready to use. This is military surplus and will have markings as shown.
Helical Helicoil 7551-6 3/8" 16 Coil Sert Thread Insert Prewinder Insertion HC5
Helical Helicoil HT552-3 10-32 Coil Sert Thread Insert Prewinder Insertion Tool
Helicoil Helical 7552-6 3/8-24 Coil Sert Thread Insert Prewinder Insertion Tool
Helical Helicoil HIT1420 1/4-20 Coil Sert Thread Insert Prewinder Insertion Tool
Helical Helicoil 7551-4 1/4-20 Coil Sert Thread Insert Prewinder Insertion HC5
Helicoil Helical 7552-6 3/8-24 Coil Sert Thread Insert Prewinder Tool (HC5)
