1/4-20 SAE Replacement Mandrel for Hand Nut Rivet Gun Save money and replace nut rivet mandrel instead of buying a new riveter! Change out your Metric gun for SAE thread instead of buying a new gun Includes 1x 1/4-20 replacement mandrel Overall mandrel length: 1-3/4" Fits many standard nut riveters including the AES-NT-0140