Bolts for Seybold CF and most older Seybolds. This square headed knife bolt is fitted with an integral washer. The washer rotates on the bolt but is not removable. This bolt has 1/2"-12 threads and measures 25/32" long below the washer. (Overall length is 1 1/4" long) The square head measures 5/8" across the flats. The steel washer is 1/8" thick and measures 1-1/8" in diameter. A screwdriver slot is provided in the threaded end to aid in removal if the head gets rounded over from a worn wrench or socket.
(This is the same bolt as our B42 bolt, EXCEPT that it has a different thread pitch. The B41 has 1/2-12 threads, the B42 has 1/2-13 threads.) Made in USA.
See our part number PPEW78 for a knife bolt wrench that fits these bolts.
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