What is the thread size of the threaded rod on the Spyder Shelf? Boris Bergmann July 28, 2021 12:34 The Spyder Shelf comes with a standard 1/4"-20 UNC tripod mount. Related articles How do I decide between a Spyder X2 Elite and Spyder X2 Ultra? What is the thread size is the Spyder Tripod Pro plate? What is the weight capacity of the Spyder Shelf?