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Note: All orders placed after 3PM on Wednesday, July 2 will be processed on Monday, July 7.
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Press-In Inserts are designed to be pressed into the plastic hole without melting the plastic prior to installation. Press-In Inserts offer rapid installation with no specialized equipment and achieve good overall joint performance

The Series 51 Inserts are the headed version of the Series 50. The head provides a larger bearing surface for the mating assembly, and is also suitable for pull-through applications where high pull-out force is a requirement. Series 51 Headed Press-In Inserts are available in thread sizes ranging from 2-56 up to 5/16-18.

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 info@spirol.com or call any one of our global offices for complimentary Application Engineering assistance!

Unit of Measure

Package Type

 N/A Bag

Supply Status

 N/A Stocked

Units Per Package

 N/A 300

Thread Size

 N/A 4-40

Overknurl Ø (A Ref.)

 N/A .165 in

Head Ø (H)

 N/A .216 in

Head Thickness (T)

 N/A .021 in

Length (L)

 N/A .140 in

Pilot Ø (P)

 N/A .152 in

Rec. Hole Ø

 N/A .155 in

Rec. Hole Ø Tolerance

 N/A +.003/-.000 in

Material Type

 N/A Brass

Material Grade

 N/A ASTM B16
UNS C36000
EN 12164 CW603N CuZn36Pb3

Finish

 N/A Plain

Weight

 N/A 0.0002906 kg0.0006407 lb

Order Processing Note

 N/A Orders typically ship in 2-3 business days. Orders received after 3pm EST will be processed on the next business day.