Pryor® Low Stress Punches

The choice of the professional engineer, hardened and tempered to precise limits to give long life and maximum safety. Especially for use in the Aircraft, Nuclear and Gas industries or where reduced stress marking is required

Pryor Lowstress Punches are manufactured from quality controlled Chromium Tool Steel allied to precise heat treatment.

Suitable for marking material up to 40 Rockwell 'C'

For guidance on hardness of material to be marked click here

Nickel plated for rust protection

Hardness is reduced at the striking end to reduce brittleness when being hit 

Pryor Lowstress Punches are manufactured with special rounded characters

Available in two character styles, continious line or dot formation

Pryor® Ministress Punches have special rounded, continious line characters for low stress marking.

Pryor® Dotstress Punches have even greater reduced stress levels and enhanced fatigue properties. Producing a character with similar nose formation to Ministress but with the added benefit of impressing the character in a dot formation. This further reduces stress levels in the component.

The Punch Safety Grip firmly holds all sizes of Pryor Punch and allows a hard blow to be struck without the risk of jarring or damaging the fingers of the user.