Knife bolts for Chandler Price Paper Cutters and some Challenge Paper Cutters, including the Challenge Diamond paper cutters from serial number 20001 to 28016, which were built between 1910 and 1953. (S645 V thread, Challenge bolt part number S-645, Challenge washer part number S-353, and Challenge part number 6708)
This blade bolt also fits the Challenge 370 paper cutters.
This steel hex head bolt has a 1/2-12 thread. It measures 13/16" long below the washer. The hex head measures 3/4" across the flats. The steel washer is captive; it rotates but does not come off. The steel washer is .11" thick and measures 1-3/8" in diameter.
These bolts also fit older (pre 1950) Pavyer table top paper cutters.
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