5/16-18 X 3-1/2" Six Lobe Flat Floorboard Type F Thread Cutting Screw - No. 3140FTFB
- Product Promotions
- Please Note: Because Products continue to develop and change, please assume Product Images to be approximate. For exact details of the currently available product, please call us.
- Six Lobe Flat Floorboard Type-F
- Thread Cutting Screw
- Manufactured to ASME B18.6.3 & SAE J933 specifications
- Case Hardened to Rockwell C45 min.
- Core hardness: Rockwell C28 - 38
- Black phosphate and oil
- Coarse Thred