Home Fasteners & Hardware Thread Inserts & Accessories Self-Tapping Inserts

Self-Tapping Inserts | Internal Thread Size: 1/4-20

Self tapping insert are ideal for use in aluminum, alloys, and mild steel. The hole in the insert allows it to bind better the material it is suspended in so that it can have a better grip through vibrations, and other stress. Reid Supply Company offers over 30 different types of self-tapping inserts so you can find the one that is best suited for you.

STI-125: $1.03 External Thread Diameter: .394 inch Internal Thread Size: 1/4-20 Length: .551 inch Material: Stainless Steel

STI-225: $0.45 External Thread Diameter: .394 inch Internal Thread Size: 1/4-20 Length: 0.551 inch Material: Brass

STI-25: $0.59 External Thread Diameter: .394 inch Internal Thread Size: 1/4-20 Length: .551 inch Material: Steel

STI-440: $1.77 External Thread Diameter: .394 inch Internal Thread Size: 1/4-20 Length: .315 inch Material: Stainless Steel

STI-340: $0.74 External Thread Diameter: .394 inch Internal Thread Size: 1/4-20 Length: .315 inch Material: Steel

STI-445: $1.42 External Thread Diameter: .394 inch Internal Thread Size: 1/4-20 Length: .472 inch Material: Stainless Steel

STI-345: $0.75 External Thread Diameter: .394 inch Internal Thread Size: 1/4-20 Length: .472 inch Material: Steel