This part number matches the current model number 103549
Part #103549
This authentic manufacturer-sourced part is specially made for Bostitch staplers. It is an identical replacement for a missing or a faulty spring that was installed on a new unit. The part helps to apply tension on the cover, please make sure to refer to the appropriate diagrams of your model for the correct location and application of th...Read moreis hardware. Keep in mind this high-quality spring is made of durable metal and is sold individually.