Alfa Tools 1/4-20 x 1.5D Helical Thread Insert

The Alfa Tools TI66220 1/4-20 x 1.5D Helical Thread Insert is a precision-engineered wire insert designed to restore damaged threads or reinforce new ones with superior strength and wear resistance. Manufactured from high-grade stainless steel, this helical coil insert provides strong internal threads that meet or exceed original strength, while resisting vibration, corrosion, and pullout. With a nominal length of 1.5 times the bolt diameter, the TI66220 offers enhanced load distribution and thread engagement, making it ideal for automotive, aerospace, machinery, and maintenance applications requiring reliable and permanent thread repair or reinforcement.