The term "jam nut" comes from its use as a secondary nut that jams the main nut. Jam nuts help to prevent loosening in cases where the bolt may be subject to vibration. In situations where you need to fasten a threaded rod or hanger bolt, a jam nut can be tightened against a regular nut in order to create a place for a wrench to be used. They can also take the place of a standard nut in cases where there is not enough exposed thread to support the thickness of a standard nut.Size: 3/8 inch-16 Similar in shape and function to a standard finished hex nut but is about half as thick Used as a second nut to "jam" or prevent the main nut from loosening Can also be used in place of a standard finished hex nut in cases where a standard nut will not fit If using one thin nut and one standard nut, the thinner nut goes in first Thread Type: Coarse, Thread Class: UNC-2B Specification(s) Met: ASME B1.1 & SAE A563
| Item | Jam Nut |
|---|---|
| Thread Size | 3/8"-16 |
| Material | Steel |
| Material Grade/Class | Grade A |
| Finish | Zinc Plated |
| Standards | ASME B1.1 A563, SAE |
| System of Measurement | Inch |
| Thread Type | Metric Coarse |
| Thread Direction | Right Hand |
| Number of Pieces | 50 |
| Country of Origin (subject to change) | China |
| Package Quantity | 50 |