Sintered pressure snubber increases gauge readability by smoothing out pressure surges, pulsations and spikes. This eliminates instrument failure due to pressure shock. Snubbing action is achieved by utilizing a corrosion resistant 316 stainless steel sintered disc. Provides long service life with no moving parts to wear out. Grade B disc is used in gases and water applications. Made of brass. 7/16"-20 SAE-4. 0.812" Hex. 0.36" Thread length. 1.60" Height.