RUBBER WELL NUTS

Rubber well nuts with threaded brass insert
Comprise of a flanged rubber sleeve with captive brass nut.
Sizes given are thread diameter x fixing length.
Threads are metric coarse.
Offer excellent electrical isolation & vibration resistance.
No special tools required.
Simply place the fixing in the hole, insert a bolt and tighten to expand the sleeve.
Ideal for fixing to cavity walls & hollow substrates.
The grip range is the thickness of material the nuts will tighten into, thinnest to thickest.
Can be used with most types of metric bolts.