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Inch Thread – Straight Hole - Heat/Ultrasonic Inserts Non-Stocked Alternatives

SPIROL’s Series 27 and Series 28 were designed to be post-mold installed with heat or ultrasonics into straight holes with a 1° maximum (included) draft angle. These Inserts are almost identical to the standard Series 29 Symmetrical and Series 30 Headed Insert offering, yet they have a slightly reduced center knurl diameter to minimize stress in plastic applications with a thin walled boss. The Series 27 is symmetrical for ease of orientation. The Series 28 has the exact same body style as the Series 27 - with the addition of a head for more bearing surface for the mating component to prevent jack-out. The Series 27 (symmetrical) and Series 28 (headed) Inserts are made-to-order in inch thread sizes ranging from 2-56 to 5/16-18.

If you would like assistance in selecting the most appropriate Insert for your application, please contact SPIROL for complimentary technical support.

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Series 27 & Series 28 Short Heat/Ultrasonic Inserts - Inch

The Series 27 & Series 28 Short Inserts were designed to be post-mold installed with heat or ultrasonics into straight holes with a 1° maximum (included) draft angle. These Inserts are identical to SPIROL’s standard Series 29 & Series 30 Short Inserts with the exception of the center knurl band which is smaller in diameter than the standard Inserts for thin wall boss applications. These non-stocked alternatives are made-to-order in inch threads ranging in size from 2-56 to ¼-20.
If you would like assistance in selecting the most appropriate Insert for your application, please contact SPIROL for complimentary technical support.
Series 27 & Series 28 Long Heat / Ultrasonic (Straight Hole) Inserts - Inch

The Series 27 & Series 28 Long Inserts were designed to be post-mold installed with heat or ultrasonics into straight holes with a 1° maximum (included) draft angle. These Inserts are identical to SPIROL’s standard Series 29 & Series 30 Long Inserts with the exception of having a smaller center knurl diameter for thin wall boss applications. These non-stocked alternatives are made to order in inch threads ranging in size from 2-56 to 5/16-18.
If you would like assistance in selecting the most appropriate Insert for your application, please contact SPIROL for complimentary technical support.

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Series 27 & Series 28 Short Heat/Ultrasonic Inserts - Inch

Series 27 & Series 28 Long Heat / Ultrasonic (Straight Hole) Inserts - Inch