M840 Stainless Steel Washers – 25 Pack



Bitcoin Self Custody Stainless Steel Fender WashersBitcoin Logo






Availability : In Stock
Weight 5 oz

7 in stock

Bitcoin Self Custody Stainless Steel Washers – 8mm ID X 40mm OD x 2mm Thickness

  1. Stainless Steel
  2. 40mm OD X 8mm ID X 2mm Thickness
  3. Recommended for use on the end and the outside of your washer stack.  The 40mm size was chosen so when you place the 40mm washers on the outside of your stack, they can be easily slipped into many standard silver bullion capsules for 1 ounce rounds using a 40mm M8 Bolt.  Not included.

Build your Seed Stack with Stainless Steel Washers

  1. Stainless Steel
  2. 2mm Thickness
  3. There are many ways to build your Seed Stacks.
  4. Copper or Stainless washers can also be stamped using the M824 Cardinal Seed Phrase Die and used on key chains to identify a set of keys on a key ring or stamped and given as a charm or gift.
  5. Stainless Steel washers are frequently used as the main washer in a Seed Stack although Copper or Black Oxide washers can also be used as the main washer for your Seed Stack if that is your preference.  The limit using the Cardinal Seed Phrase Die is 12 characters per M824 washer.
Weight 5 oz


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

products q & a