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Threaded Inserts


Moulded-In Inserts are placed over core pins by an operator or a pick-and-place robot prior to the closure of the mould cavity during the plastic injection process.  Moulded-In Inserts offer exceptional torque and pull-out resistance due to unrestricted plastic flow around the Insert body, and are often the Insert of choice for thermosets and engineered plastics with a high percentage of filler. The minor thread diameter tolerance is controlled to ensure positive positioning and perpendicularity of the Insert on the core pin during the moulding process. Series 63 is symmetrical eliminating orientation and Series 65 is the same body style in a blind ended version. SPIROL's Moulded-In Inserts are made from 2024 aluminium, a light-weight, lead-free grade.

SPIROL’s Series 63 and Series 65 Moulded-In Aluminium Inserts are available in thread sizes ranging from M4 (8-32) up to M8 (5/16-18).

Application Engineering Assistance: If you would like assistance in selecting the proper Threaded Insert for your plastic assembly, please Request Engineering Support!  We are here to help!

Moulded-In Threaded Inserts Product Listing

(Series 63)

Aluminium Through Hole Moulded-In Inserts

SPIROL's Series 63 Through Hole Moulded-In Inserts are symmetrical, eliminating the need to orient the Insert prior to placement onto the core pin in the mould cavity.

(Series 65)

Aluminium Blind-End Moulded-In Inserts

SPIROL's Series 65 Blind-End Moulded-In Inserts has the same body style as the Series 63 Through Hole Insert, yet with a blind end.

Customisable Solutions

If you are unable to find the Threaded Insert in the thread size, length, material, finish or quantity that you require within our standard offering, or if you are unsure what Insert is most appropriate for your plastic assembly, Request Engineering Support and we will help you find the most cost-effective solution for your application.

Request Engineering Support

Local Design, Global Supply.

SPIROL has Application Engineers throughout the world to assist you in your designs, supported by state-of-the-art manufacturing centers and worldwide stocking facilities to simplify the logistics of delivering your product.

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