Metric Cup Head Square Neck Bolt - 316 Stainless Steel Countersink Bits & Sets ●Size range M4 to M20

●Size range M4 to M20

📐454g Net Weight

Master Lock butterfly valve lockout

complies with workplace bunding requirements

• Welding • Foundries • Smelters • Mining • Construction

Metric Cup Head Square Neck Bolt - 316 Stainless Steel Countersink Bits & Sets ●Size range M4 to M20Marine grade 316 stainless for salt and chemical exposure Size range M6 to M16, lengths 20 mm to 240 mm Smooth domed head with square anti spin neck Grade 316 stainless steel delivers superior corrosion resistance in marine, chemical and salt rich environments, so this cup head bolt holds up where 304 will not. The square neck under the head locks the bolt against the timber so it cannot spin, which is why this hex bolt is preferred for benches, gates