Heli-Coil 5528-6 3/8-24 wire insert repair kit
Check compatibility
Heli-Coil 5528-6 is the fine 3/8-24 repair kit. Compare with 5521-6 if the original fastener has the same nominal diameter and 16 TPI.
Questions before ordering
Does 5528-6 accept a 3/8-16 fastener?
The repair thread for 5528-6 is 24 TPI. Compare 5521-6 if your original fastener has 16 TPI.