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SPIROL’s Series 28 Long Headed Metric 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 Metric Inserts are available to order in thread sizes ranging from M2 up to M8.

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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Item #

Supply Status

Units per Box

Thread Size

Overknurl Ø (A)

Head Ø (H)

Length (L)

Material Type

Finish

Price Per Box

115076 N/A Not Stocked N/A 1 N/A M2 x 0.4 N/A 3.56 mm N/A 4.70 mm N/A 3.99 mm N/A Brass N/A Plain QUOTE
151250 N/A Not Stocked N/A 1 N/A M2.5 x 0.45 N/A 4.50 mm N/A 5.49 mm N/A 5.74 mm N/A Brass N/A Plain QUOTE
151252 N/A Not Stocked N/A 1 N/A M3 x 0.5 N/A 4.50 mm N/A 5.49 mm N/A 7.14 mm N/A Brass N/A Plain QUOTE
151254 N/A Not Stocked N/A 1 N/A M3.5 x 0.6 N/A 5.28 mm N/A 6.27 mm N/A 8.15 mm N/A Brass N/A Plain QUOTE
151256 N/A Not Stocked N/A 1 N/A M4 x 0.7 N/A 6.12 mm N/A 7.06 mm N/A 9.53 mm N/A Brass N/A Plain QUOTE
151259 N/A Not Stocked N/A 1 N/A M5 x 0.8 N/A 6.91 mm N/A 7.87 mm N/A 9.53 mm N/A Brass N/A Plain QUOTE
151261 N/A Not Stocked N/A 1 N/A M6 x 1.0 N/A 8.51 mm N/A 9.45 mm N/A 12.70 mm N/A Brass N/A Plain QUOTE
151263 N/A Not Stocked N/A 1 N/A M8 x 1.25 N/A 10.08 mm N/A 11.05 mm N/A 12.70 mm N/A Brass N/A Plain QUOTE
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