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SPIROL’s Series 28 Long Headed Inserts are designed for straight holes with a 1° maximum (included) draft angle and are typically installed with heat or ultrasonic vibration. The Series 28 Long Inserts are similar to the Series 27 Long Inserts with the addition of a head for increased bearing area. The Series 28 Long Headed Inserts have the same body style as the standard Series 30 Long Headed Inserts with a reduced center knurl diameter for plastic assemblies where the boss diameter is less than 2x the body diameter of the Insert. The Series 28 also comes in a Short version to reduce costs and installation time for applications requiring less demanding torque and/or pull-out resistance. The SPIROL’s Series 28 Headed Inserts are available to order in inch threads ranging in size from 2-56 up 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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Unit of Measure
Items
Series 28 Long Headed Inserts

INS 28/2-56 / .157L EK
Price per Package Unit QUOTE
Series 28 Long Headed Inserts

INS 28/4-40 / .226L EK
Price per Package Unit QUOTE
Series 28 Long Headed Inserts

INS 28/6-32 / .281L EK
Price per Package Unit QUOTE
Series 28 Long Headed Inserts

INS 28/8-32 / .321L EK
Price per Package Unit QUOTE
Series 28 Long Headed Inserts

INS 28/10-24 / .375L EK
Price per Package Unit QUOTE
Package Type N/A Each
Supply Status N/A Not Stocked
Units Per Package
N/A 1
Thread Size N/A 2-56 N/A 4-40 N/A 6-32 N/A 8-32 N/A 10-24
Overknurl Ø N/A .140 in N/A .177 in N/A .208 in N/A .241 in N/A .272 in
Head Ø N/A .185 in N/A .216 in N/A .247 in N/A .278 in N/A .310 in
Length N/A .157 in N/A .226 in N/A .281 in N/A .321 in N/A .375 in
Material Type N/A Brass
Finish N/A Plain
Order Processing Note N/A