Hex Bolt Suppliers There are different grade for hex bolts, such as 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, the hexagonal bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel. It reaches different grade after heat treatment (quenching, tempering). it is generally called high-strength hexagonal bolts, and the rest are generally called low carbon steel hexagonal bolts, or mild steel hex bolts. The bolt grade consists of two parts of numbers, which represent the nominal tensile strength value and yield ratio of the bolt grade respectively. E.g: Grade 10.9 high-strength bolts, after heat treatment, can achieve: 1. The nominal tensile strength of the bolt material reaches 1000MPa; 2. The yield-strength ratio of the bolt material is 0.9;The nominal yield strength of the bolt material is 1000脳0.9=900MPa The bolt grade is an international standard. Jinrui has rich experience in producing these different grades of hexagonal bolts, but here we still want to remind everyone that although the higher the performance grade of hexagonal bolts, the better, but most basic fields only need grade 4.8 hex bolts. . Buying the right hex bolts at a reasonable price is what Jinrui has always advocated. Production Process of Hex Bolts Specification of Grade 8.8 Hex Bolt d1/45/163/87/161/25/83/47/81 dsmax0.260.3240.3880.4520.5150.6420.7680.8951.022 min0.2370.2980.360.4210.4820.6050.7290.8520.976 smax0.4380.50.5620.6250.750.9381.1251.3121.5 min0.4250.4840.5440.6030.7250.9061.0881.2691.45 emax0.5050.5770.650.7220.8661.0831.2991.5161.732 min0.4840.5520.620.6870.8261.0331.241.4471.653 kmax0.1880.2350.2680.3160.3640.4440.5240.6040.7 min0.150.1950.2260.2720.3020.3780.4550.5310.591 rmax0.030.030.030.030.030.060.060.060.09 min0.010.010.010.010.010.020.020.020.03 bL鈮?0.750.87511.1251.251.51.7522.25 L锛?11.1251.251.3751.51.7522.252.5 d1-1/81-1/41-3/81-1/21-5/81-3/41-7/822-1/4 dsmax1.1491.2771.4041.5311.6581.7851.9122.0392.305 min1.0981.2231.3451.471.5911.7161.8391.9642.214 smax1.6881.8752.0622.252.4382.6252.81233.375 min1.6311.8121.9942.1752.3562.5382.7192.93.262 emax1.9492.1652.3822.5982.8153.0313.2483.4643.897 min1.8592.0662.2732.482.6162.8933.0993.3063.719 kmax0.780.8760.941.0361.1161.1961.2761.3881.548 min0.6580.7490.810.9020.9781.0541.131.1751.327 rmax0.090.090.090.090.090.120.120.120.19 min0.030.030.030.030.030.040.040.040.06 bL鈮?2.52.7533.253.53.7544.254.75 L锛?2.7533.253.53.7544.254.55 Common Grade and Coating StandardMaterialGradeFinishThread DIN933 DIN931 ISO4014 ISO4017 ASME B 18.2.1carbon steel4.6 4.8 5.8 8.8 10.9 12.9 A2-70 A4-70PlainUNC Zinc plated Alloy steelYellow zinc plated PTFE Stainless steelBlack OxideUNF Dacromet OtherHDG Other Application Area of Hex Bolts High-strength hexagonal bolts of grade 8.8 or above are mainly suitable for important structures such as large-span houses, industrial plant steel structures, high-rise building steel frame structures, bridge structures, and heavy lifting machinery. The common grade hex bolt and nut are widely used, such as the production, installation, maintenance, etc. of various mechanical equipment, electronic products, communication equipment, furniture equipment, construction and other industries, basically covering all industries, for The entire basic industrial facilities have played an important role. Of course, in some specific locations in these fields, other products are also used, such as rail bolts, flange nuts, U-bolts, flat head hex bolts, T-bolts, round head square neck bolts and round head hex bolts.Hex Bolt Suppliers website:http://www.jinruibolts.com/bolts/hex-bolt/