Across Flats (Width): Max 0.312″ – Min 0.302″ Color (Duplicate): Silver Color: Yellow Color May Vary: Color and sheen may vary Condition: New Diameter: #8 Drive Style: External Hex Thread Direction: Right Hand Fit: 2B Internal Thread: #8-32 Material (Duplicate): 18-8 Stainless Steel Material: Brass Part Number: 046737863846 Pattern: Military Standard Flat Washer Product Type: Cap Nuts Size: 5/8″ 821 Size System: US Size Type: Regular System of Measurement: Inch Thread Direction: Right Hand Thread Pitch: 32 Per Inch Thread Size: #8-32 Thread Standard: UNC Thread Type: Coarse Tolerance (IFI): Actual measurements may vary slightly /- depending on production run within IFI Tolerances Weight: 1 lb Hex nut with a closed end Domed thread to protect external thread Low Crown Most Popular style Easily Removable Aesthetic finished look Also known as an Acorn Nut, Cap Nut, or Dome Nut