<p>Air Hard Flat Stock, Steel Material, Width 4 In., Thickness 7/8 In., Finish RMS 45 Max, Length 18 In., Length Tolerance +.125 In./.250 In., Hardness Scale 200 to 235 BHN, Grade A2, Standards UNS T30102, SAE J-437, ASTM A-681-07, FEDERAL QQT-570 REV C</p> <p><br /><b>Features</b></p> <ul> <li>Finish: RMS 45 Max</li> <li>Item: Air Hard Flat Stock</li> <li>Length: 18&quot;</li> <li>Material: steel</li> <li>Width: 4&quot;</li> <li>Grade: A2</li> <li>Thickness: 7/8&quot;</li> <li>Standards: UNS T30102, SAE J-437, ASTM A-681-07, FEDERAL QQT-570 REV C</li> <li>Length Tolerance: +.125&quot;/.250&quot;</li> <li>Hardness Scale: 200 to 235 BHN</li> </ul> <p></p>