Extensive knurling on all six sides: Provides maximum grip and control for tightening bolts by hand
Four internal knurled holes: Adds extra grip and prevents slippage during installation
Multiple color options: Allows users to personalize and match their gym accessories
Durable construction with stainless steel and zinc-plated steel options: Ensures long-lasting performance
Compatible with standard rack hardware: Fits most home and commercial gym setups
Summarized by Shop
"The Overkill Nut" derives its name for the excessive amount of knurl crammed into it. Beyond the six sides, you may notice the 4 additional holes. These holes are also knurled on the inside. Is it hard to see? Yes. Does it serve a function? No. Was it necessary? Yes! Here at Frogfits, we believe everything should be knurled to the extrem
Material
Plastic, stainless steel, zinc-plated steel (varies by size)
Thread Types
M24 3/8 in, M16 2/0 in, 5/8 in, 1 in (imperial or metric, depending on rack)
Assembly
Two plastic pieces fastened with two black stainless screws and two black coated stainless locknuts
Color Options
Green, Black, Gray
Pattern
Solid
Summarized by Shop
4.9
19 ratings
5
4
3
2
1
Always great stuff from FrogFits!
A
Austin · 8 days ago
Wish I’d found these a long time ago. Awesome!
T
Todd · April 17, 2026
Great nuts! I also messed up my own rack sizing when I was ordering and the fine folks of FrogFit got me squared away with the right sizing immediately. Will buy again!