This aluminum adapter has male 10x1.0mm threads with a concave seat at one end and a male 3AN (3/8-24, 37° flare) on the other. Anodizing color may vary from photo.
Note: This fitting is designed for low-pressure systems (below 200 psi) such as oil pressure gauge lines. High-pressure systems such as brakes should use our Steel 10x1.0mm Concave Seat to 3AN Male Adapter (Part No. 3265-51).
Convex vs Concave