Hello again from ForeverHandCrafted!  We're very happy to offer our Unbleached Cow Bone nut for Fender guitar in the 41mm / 1 5/8" length with flat bottom.  Fits many Fender models.  We make this item in our Michigan shop from unbleached cow bone blank.  Shipped to you immediately with full postal tracking.

If the stated dimensions match what you need, you'll have a PERFECT FIT!