Flange bolts feature a built in washer under the bolt head that helps to distribute the clamping load over a larger area. This "one-piece" design eliminates the need of a separate washer under the bolt head and is preferable for some applications as it can be more efficient and easier to use. A washer is still needed on the nut side unless using a flange nut. The serrations under the flange bite into the surface and help to resist loosening due to vibration.Size: 1/4 inch-20 X 1-1/4 inch Hex bolt with a serrated circular flange under the head Flange eliminates need for separate washer Serrations bite into surface and can help to prevent loosening Designed for use with a nut (not included) or a threaded hole of the same diameter and thread size Thread Type: Coarse, Thread Class: UNC-2A, Point Style: Blunt Specification(s) Met: ASME B18.2.1, ASME B18.6.3, & ASME B1.1
| System of Measurement | Inch |
|---|---|
| Flange Type | Serrated |
| Thread Size | 1/4"-20 |
| Fastener Length | 1-1/4 in |
| Head Width | 3/8 in |
| Drive | Hex |
| Material | Case Hardened Steel |
| Finish | Zinc Plated |
| Thread Style | Fully Threaded |
| Thread Direction | Right Hand |
| Standards | ASME B18.2.1, ASME B18.6.3, & ASME B1.1 |
| Item | Flange Bolt |
| Head Style | Flange Hex |
| Country of Origin (subject to change) | China |
| Package Quantity | 25 |