10 x M4 U Nuts + 10 x M4 Bolts. 10 x M6 U Nuts + 10 x M6 Bolts. 10 x M5 U Nuts + 10 x M5 Bolts. Thestrong clamping force ensures a tight, vibration-resistant fit. Crafted from304 stainless steel, these U nuts and bolts are known for theircorrosion resistance ,strength, andlongevity.
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