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The Series 29 Long Insert is the longer version of the Series 29 Short Insert resulting in higher torque and pull-out resistance. Designed with a wide center knurl with two smaller knurls and deep undercuts on both ends, the Series 29 Long (and the Series 30 Long – Headed version of the Series 29 Long ) typically provides the highest torque and pull out performance within SPIROL’s Heat/Ultrasonic style Inserts designed for straight holes. This series is symmetrical for ease of orientation, and the generous pilot facilitates installation into the hole. The Series 29 Long is available in inch threads 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 150

Thread Size

 N/A 5/16-18

Overknurl Ø (A Ref.)

 N/A .407 in

Length (L)

 N/A .500 in

Pilot Ø (P)

 N/A .374 in

Rec. Hole Ø

 N/A .377 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 Per Piece

 N/A 0.0031258 kg0.0068912 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.