HERE WE HAVE FOUR HEX HEAD SET SCREWS, THESE ARE 3/8" UNF AND 7/8" LONG, 

HEAD MARKINGS  --DEPRESSED CENTRE---3 EQUIDISTANT LINES--- S---[GRADE]---GKN--[MAKER]

EQUIVALENT TO SAE GRADE 5 [8.8]

FINISH---ZINC PLATED

90g

I WILL ENDEAVOUR TO POST WITHIN THREE WORKING DAYSI WILL ENCLOSE AN INVOICE WITH EACH ORDER BUT SORRY I AM NOT REGISTERED FOR VAT