With an extra large flange for increased friction between bolt and surface, our large hex flange machine screws feature serrations under the flange as well as an indented head. Available in grade 5, all serrated large flange machine screws come with trivalent finish and meet all IFI-111 specifications.
| NBS Corp. | |
|---|---|
| Product Category | Screws |
| Product Number | BS5LFB02501018Z |
| Product Name | 5/16-18 x 1" Gr. 5 Hex Flange Machine Screw, Large, Serrated, Indented Head, Zinc |
| Screw Type | Machine Screw |
| Head Type | Hexagon Head |
| Material | Steel |
| Finish | Zinc Plated |
