Best Seller | FLEXLOC 50FAF-518 Flexible Top Lock Nut, 5/16"-18, 18-8 Stainless Steel, Not Lock Nut, Dimensional Standards MIL-S-8879, NASM25027, Finish Plain, Hex Height 5/32 in, Hex Type Standard Light Hex, Hex Width 1/2 in, Lock Type Flexible Top, Material Stainless Steel, Material Grade/Class 18-8, Maximum Temperature 1,200 Degrees F,... ... more FLEXLOC 50FAF-518 Flexible Top Lock Nut, 5/16"-18, 18-8 Stainless Steel, Not Lock Nut, Dimensional Standards MIL-S-8879, NASM25027, Finish Plain, Hex Height 5/32 in, Hex Type Standard Light Hex, Hex Width 1/2 in, Lock Type Flexible Top, Material Stainless Steel, Material Grade/Class 18-8, Maximum Temperature 1,200 Degrees F,... | | $152.99 go to store |