RIBE style cap screw or knife bolt for many of the Muller Martini cutters, including the 3-knife trimmers, the Zenith Trimmer, and the Muller Martini Merit. This steel blade bolt comes complete with an attached hardened washer which rotates in place but will not fall off. The screw threads are M10 X 1.5mm. The bolt measures 26.5mm long (1.04"), including the head. It is 16.5mm long (5/8") below the washer. The outside diameter of the washer is 20mm (.79") in diameter. The bolts and washers are black oxide treated.
These blade bolts or blade screws have a RIBE or polydrive head, Grade 10.9 steel. (equivalent to Muller Martini blade bolt part number 3670.4320.4)
Please note that the photo shows 2 pieces for clarity. Price is for 1 piece.
Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.
To complete your return, we require a receipt or proof of purchase.
Customized products and gift cards are exempt from being returned.
Heidelberg OEM Parts are subject to re Stocking fees.
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 30 days.
Late or missing refunds
- If you haven’t received a refund yet, first check your bank account again.
- Then contact your credit card company, it may take some time before your refund is officially posted.
- Next contact your bank. There is often some processing time before a refund is posted.
- If you’ve done all of this and you still have not received your refund yet, please contact us at