Cup square bolts carry a square neck under the head. It sits in a form-fit and holds the bolt while the nut is tightened, so the job needs only one hand. In stock: M8x70 in steel 4.8, full thread, hot-dip galvanized. Further lengths from 40 to 100 mm and stainless steel 1.4301 are available on request. It is the bolt used in ARNELL's assembled grating fastener sets.
SLOTTED MUSHROOM HEAD SCREW M8x70, steel 4.8, hot-dip galvanized
Becherschraube mit Schlitz, M8x70, Stahl 4.8, Vollgewinde, feuerverzinkt
Content: 1 Stück (€92.127400 / 100 Stück)
Frequently asked questions
Which dimension, property class and finish are in stock?
In stock in this shop: M8 x 70 mm in steel 4.8, full thread, hot-dip galvanized. From the ARNELL range on request: M8 in lengths from 40 to 100 mm, in steel 4.8 hot-dip galvanized or electroplated, and in stainless steel 1.4301.
Does the cup square bolt have a slot in the head?
Yes. The version in stock is a slotted cup square bolt. The slot takes the screwdriver, while the square neck under the head keeps the bolt from turning - so no second tool is needed.
Which nut is used in the assembled fastener sets?
The square nut DIN 557 in M8. Its flat sides can be held against a profile, which is why it pairs with the square neck of the bolt.
Is the cup square bolt suitable for outdoor use?
The version in stock is hot-dip galvanized to DIN EN ISO 10684, the robust standard for outdoor use. Zinc layer typically 45 to 85 micrometres.