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ISO 898-2 class 8 hexagon cap nuts to DIN 1587. High-tensile dome nuts for class 8.8 bolts on railings, guards, and visible machine joints. Listed M4–M24.
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12 sizes available
ISO 898-2 property class 8 hexagon cap (dome / acorn) nuts to DIN 1587. Closed domed crown covers the bolt end on class 8.8 joints that must stay snag-free — railings, guards, and visible machine fixings. Metric coarse, listed M4–M24. The dome limits how much thread the nut can accept.
Specify where an 8.8 joint still needs a closed thread end — industrial railings, equipment covers, and architectural steel with structural fasteners. Match class to the bolt. Confirm thread protrusion fits the dome; over-long bolts will bottom out before clamp is reached.
Request a quote with sizes, quantities, surface finish, and delivery country. Matching 8.8 bolts can be included in the same cart.
ISO 898-2 class 8
DIN 1587
Steel
Cap Nut
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