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Sales to trade customers only
Suitable for internal threads and bore holes.
For fastening roof sheeting and support rails
DIN 7500-1 countersunk head, case-hardened (-O-) galvanised steel, blue passivated (A2K)
DIN 7500-1, hexagon head with collar, case-hardened (-O-) galvanised steel, blue passivated (A2K)
Similar to DIN 933, plain A2 stainless steel with captive washer