This item is a genuine OEM replacement part by Bostitch. It is a part of the trigger valve assembly. These parts may need replacement if air is leaking through the trigger. An O-ring is a bendable piece that acts as a seal between rigid parts, designed to retain pressure. This piece is sold individually. Also sold with Trigger Valve Kit, part # TVA5.
This is a genuine replacement part manufactured for use with pneumatic nailers. This special metal nut is compatible with several types of nailers, and is typically used to secure the magazine bracket, to the slot at the base of the handle body. There is other hardware required to secure the magazine bracket, please see model diagram for additional associative parts. This nut is sold individually.
It is a genuine item that is supplied by the original equipment manufacturer for use with Bostitch nailers and staplers. The o-ring attaches to the cylinder and is made of rubber. When replacing this part a screwdriver and an allen wrench might be required during the installation process. It will require replacing if it becomes broken. This part is available individually.