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Pilot diameter and undercuts allow plastic to flow into grooves providing high pullout resistance.
Aluminum inserts ideal for light weight designs.
Aluminum and stainless steel inserts offer lead-free alternative.

Unit of Measure

Specifications

Thread Size	N/A .250-28 (1/4-28)
Type	N/A ITB
Thread Code¹	N/A 0428
A ± .005	N/A .375 in
E Nom.	N/A .344 in
C ± .005	N/A .321 in
S1 Nom.	N/A .060 in
S2 Nom.	N/A .090 in
Minor Dia.Min.	N/A .212 in
Minor Dia.Max.	N/A .220 in
Thread Specification	N/A 2B per ASME B1.1
Standard Material	N/A Free-machining, Leaded Brass
Standard Finish	N/A Plain
CAD Supplier	N/A PennEngineering® (SI®)
Inventory	N/A {0}

¹ Thread tapped thru, Class 3A/4h screw must pass with finger torque, but basic go gauge may stop at last thread.