Details
4B4-R12 North American Aviation standard press-fit bushing for 3/8 in. bolt.
Part Number: 4B4-R12
Part Type: Bushing
Bolt Size: 3/8 in.
A 4B series press-fit bushing is pressed into a reamed hole in a fitting, bellcrank, or bracket to give the bolt a hard, replaceable bearing surface. When it wears, the bushing is replaced instead of the parent part. The basic number sets the bolt size on this NAA standard.
Photos are for reference only.
Warranty Information
All parts are sold "as-is". Airworthiness to be determined by an appropriately rated certificate holder. No warranty is implied. AirCorps Depot reserves the right to charge a restocking fee when deemed appropriate.
