M16 8.8 Zinc Plated Hexagon Set Screws DIN 933

Product Description

M16 × 2.0mm property class 8.8 zinc-plated steel hexagon-head set screws, fully threaded and manufactured to the traditional DIN 933 / current ISO 4017 dimensional pattern.

These high-tensile metric set screws feature a conventional external hexagon head and a full metric coarse thread extending along the usable length beneath the head. They are suitable for machinery, structural brackets, automotive components, agricultural equipment, fabrication, maintenance and general engineering assemblies.

• Thread size: M16
• Thread pitch: 2.0mm metric coarse
• Threading: Fully threaded
• Available lengths: 45mm, 50mm, 75mm and 100mm
• Head style: External hexagon head
• Width across flats: Approximately 24mm
• Head height: Approximately 10mm
• Recommended spanner or socket size: 24mm
• Material: High-tensile steel
• Property class: 8.8
• Finish: Zinc plated
• Traditional standard: DIN 933
• Current international standard: ISO 4017
• British adoption: BS EN ISO 4017
• Pack sizes available: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 50, 100, 250, 500 and 1000

These M16 hexagon-head set screws are suitable for machinery, automotive repairs, agricultural equipment, steel fabrication, structural brackets, workshop maintenance and general engineering applications.

The standard M16 × 2.0mm metric coarse thread must be used with a corresponding M16 nut, threaded insert or tapped hole. It is not interchangeable with M16 metric fine threads such as M16 × 1.5mm.

The fully threaded set-screw construction provides thread engagement along the usable length beneath the head. This makes the screws suitable for assemblies with varying material thicknesses and applications where a plain unthreaded shank is not required.

Property class 8.8 is a high-tensile steel fastener grade with a nominal tensile strength of approximately 800 N/mm² and a nominal yield-strength ratio of 0.8. Correct tightening torque depends on lubrication, thread condition, mating material, joint design and required clamp load.

The external hexagon head is installed using a correctly fitting 24mm spanner or socket. Ensure the tool is seated fully across the flats before applying torque to reduce the risk of rounding or damaging the head.

The zinc-plated finish provides improved corrosion resistance compared with untreated self-colour steel and is suitable for many indoor and sheltered outdoor applications. It is not normally recommended for prolonged exposure to marine, coastal or highly corrosive environments.

Hexagon set-screw length is measured from directly beneath the head to the end of the screw. The hexagon head is not included in the stated length.

Please note: DIN 933 is the traditional designation used on the product page. ISO 4017 is the current international standard for fully threaded metric hexagon-head screws, with BS EN ISO 4017 being the corresponding British adoption. Dimensions and specifications are intended as a guide and may vary within permitted manufacturing tolerances. Check the fastener where fit, strength or dimensions are critical.

Please Note: Specifications given are intended as a guide only. If critical to your project please check with us first.