There are some types of wholesale staples that are slightly more prone to jamming issues than others:
Low crown staples
Staples with a very narrow crown (1/8″ or less) can jam more easily since there is little clearance between the head and the stapler anvil/chuck.
Thin wire staples
Very thin gauge staples made of finer wire may be more prone to buckling or jamming during firing. Heavier gauges are sturdier.
Curved/bent staples
Any staples that are pre-formed with a bend or hook shape can inadvertently snag or hang up inside the stapler mechanism.
Overly long staples
Extra long staples may jam if the legs or crown protrude too far beyond the mouth/throat plate area of the stapler.
Blunt/mushroomed staples
Staples that have become dented, mushroomed or otherwise deformed on their tips can catch more readily.
Damaged or inferior staples
Staples made of poor quality metal or that have factory defects like burrs are at higher risk.
Missized staples
Using staples that are too large or don’t properly match the stapler throat size rating can lead to hangs.
Proper staple selection and regular maintenance/clearing of any built-up debris in the stapler helps reduce potential jams.
