Nuts with a domed end on one side are also known as crown nuts, blind nuts, cap nuts or dome nuts. Manufactured from two pieces, the nut and the cap, and then pressed together. A2 stainless steel is functionally equivalent to 304 grade, also known as 18-8 stainless steel. Stainless steel significantly improves resistance to tarnishing or corrosion.DIMENSIONAL ATTRIBUTES Diameter (Nominal): M10 Thread Pitch: 1.0 Diameter (Dimension): 10mm Thread Length (Nominal): 8.8mm Outside Diameter (Nominal): 15mm Across Flats (Basic): 17mm Height (Basic): 18mmPRODUCT ATTRIBUTES Category: Acorn Cap Dome Nuts System of Measurement: Metric Brand: Aspen Fasteners® Form and Design: High Type Drive Style: External Hex Drive Thread Length: Full Thread Thread Direction: Right-Hand Thread Material: Stainless Steel Material Grade: A2 Stainless Steel Material Processes: Two-Piece Assembly Coating: Uncoated Standards and Specifications: DIN 1587