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Molded-In Inserts are designed for maximum pull-out and torque performance, and are often the Insert of choice for thermosets and engineered plastics with a high percentage of filler. The Series 63 Through-Hole Insert is symmetrical which eliminates having to orient the Insert when placing it onto the core pin in the mold. The minor thread diameter tolerance is controlled to ensure positive positioning and perpendicularity of the Insert on the core pin during the molding process. Series 63 Inserts are made from lightweight, lead-free 2024 aluminum, and are available in metric threads ranging from M4 to M8.

If you don’t see what you are looking for in our standard offering (including thread size, length, quantity, etc.), please feel free to contact SPIROL directly at or call any one of our global offices for complimentary Application Engineering assistance!

Unit of Measure

Supply Status

N/A Stocked

Units per Box

N/A 1

Thread Size

N/A M8 x 1.25

Outer Ø (A Ref.)

N/A 11.75 mm

Length (L)

N/A 11.75 mm

Minimum Minor Ø

N/A 6.769 mm

Material Type

N/A Aluminum

Material Grade

N/A ASTM B211 2024
ISO AlCu4Mg1


N/A Plain

Weight Per Piece

N/A 0.001323 kg0.0029167 lb