... . 2. Material: Carbon steel.3. Grade of hex nut: Grade 4.8, Grade6.8, Grade8.8, Grade10.9, Grade12.9. Inch standard: Grade2, Grade5 ... .4. Dimensions: M3-M485. OEM & Customize non-standard products welcome.6. ... Hex NutSpeicifications:M3-M48; 1/4''-1-1/2''Material:Carbon steel, Q195, 35KNut Grade:Class4.8, 6.8, 8.8, 10.8and12.9; inch ...