Discount Lee Valley Rampa SKD330 5/16-18 Inserts

Available in 15mm and 18mm lengths, these inserts have 5/16-18 internal threads. Triple start threads mean these inserts stay aligned when driven and provide a faster feed rate.

Typical pre-drill is 12mm to 12.5mm (about 31/64″). Insert collar is 14mm, giving an overlap of about 1mm around the drilled hole for a good seal and clean appearance.

Zinc-plated steel. Driven with a 6mm hex driver. Priced per insert.

Made in Germany.