Metric Output Jack Nut, Washer and Locking Star Washer M9 Thread - Nickel

Fixed my guitar and came with sweet free thick pick

The Secret Fix M9 Star Washer

Why these imported guitars do not come with these is a mystery. I looked everywhere for a M9 star washer but nobody carried M9. They sell M6, M8, M10. I cannot tell you how many times my jack has loosened up even though it had been tightened with a jam nut on the back side of the jack cup. Vintage amps all had these star washers on all Potentiometers shafts and jacks, it aided in providing a good ground and they didn't loosen up. Even the finish on the nut and washers were excellent. Thank you Guitar Repair Parts for providing guitar players with something this unique that nobody else carries, worth every penny.

Review

Nice