Bn 768 bn 769 bn 770.
Spring washer din 127.
Din 127 b spring lock washers form b equivalent norms.
All of these washers meet a din or asme standard for split lock washer dimensions.
Standard split lock washers have a left hand helix which means you can only use them with bolts that have right hand threads to prevent clockwise rotation from vibration.
Split lock washers are a left hand helix and allow the nut to be tightened in a right hand direction only.
We also manufacture din 127 spring washers and din 128 spring lock washers curved and wave double coiled spring washer.
Belleville spring lock washers also known as conical washers these have a slightly cupped shape that gives them spring like flexibility to grip tighter than split and tooth lock washers.
As you tighten a bolt these metric washers flatten to add tension to the threaded joint and prevent loosening from small amounts of vibration.
These washers have smaller outside diameters than standard spring lock washers to fit neatly under socket head cap screws.
Metric din 127 helical spring split lock washers are commonly used metric lock washers it is a split metal ring that is bent into a helical shape.
Din 127 a spring lock washers form a equivalent norms.
Din 127 b spring lock washers form b dimensions specifications standard weights equivalent and download pdf.
By din 127 spring washer normal series.
Din 127 b standard withdrawn bn 762 split spring lock washers with flat end spring steel mechanical zinc plated blue uni 1751 b čsn 021741 we recommend din 128 a curved spring lock washers for new construction.
When compressed by tightening the nut the washer bites into the.