PRODUCT SPECIFICATIONSPart #: 0000-107175Fastener Type: Finished Hex NutSize Description: 1/4 -28Diameter/Nominal Size: 1/4 Thickness: 7/32 (0.212-0.226 )Wrench Size/Across Flats: 7/16 (0.428-0.438 )Width Across Corners: 0.488-0.505 Thread Pitch: 28Thread Pitch Type: FineThread Direction: RightSystem of Measurement: InchMaterial: Stainless Steel 316Finish: Plain Finish (No Plating)Drive Type: External HexAverage Piece Weight: 0.0070000 lbs.Nuts are almost always used in conjunction with a mating bolt to fasten multiple parts together; kept together by a combination of their threads' friction, a slight stretching of the bolt, and compression of the parts to be held together. Please see the specifications in the table below for full details. If you have any questions or doubts, or if your requirements include specific dimensions, please contact us prior to placing your order. PICTURES ARE REPRESENTATIVE OF ITEM, BUT ARE NOT OF THE ACTUAL ITEM. Product dimensions, finish, head markings, thread length, stamping shape or forging shape, etc., may differ from picture. Products are guaranteed to meet the specifications to which they are manufactured. Specifications allow for tolerances in dimension and shape, which can vary from lot to lot. ASMC Industrial Brand fasteners are guaranteed to be of the highest quality and are lot controlled, providing traceability to the manufacturer and raw material. ASIN B00Z3XGFHQ Brand ASMC Industrial Size Name 1/4 -28 Metal Type Stainless Steel Drive Style External Hex Item Weight 4.54 g Part Number 0000-107175 Thread Size 1/4 -28 Thread Type Unified National Fine Finish Types Plain Grade Rating grade 8 Manufacturer ASMC Industrial Thread Style Right Hand Fastener Type Finished Hex Nut Material Type Stainless Steel 316 Exterior Finish Plain Finish (No Plating) Inside Thread Size 1/4 -28 inches