Metric Round Head Bolts (CSK-Countersunk) Flat NIB Bolts SABS 1143 / DIN 604 / DIN 555

STANDARD GRADE FINISHING RANGE M*L
DIN 604, DIN 555 Grade 4.8, 8.8, 10.9, 12.9 Plain M10 17-20
Black M12  25-100
SABS 1143-1977 HDG M16  40-100
Stainless Steel M20  40-100
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