Steel Bolts SAE Grades For metric bolts strength is according ISO 898 Mechanical properties of fasteners made of carbon steel and alloy steel described by quot property classes quot with designations 4 6 4 8 5 8 8 8 9 8 10 9 and 12 9 Property Class Head Marking 7 1 2017 nbsp 0183 32 There exists an often quoted myth that Grade 5 bolts are better in shear than Grade 8 since they will bend before breaking Not true Shear strength of alloy steel is approximately 60 of its ultimate tensile strength Reference to Table 1 shows that the yield strength of a Grade 8 bolt is higher than the ultimate strength of a Grade 5 bolt Click image for details 5 16 quot GRADE 8 THREADED STUD Product ID 23002 Description 5 16 quot GRADE 8 THREADED STUDS CYLINDER HEAD AND MANIFOLD STUDS GRADE 8 MEDIUM CARBON HEAT TREATED STEEL Price 1 25Mild steel Bolts and Screws conform to grades 4 6 and 4 8 and Nuts to grade 4 Higher grades of 5 6 and 5 are also arranged against order Finishes Self colour Zinc plated with White Blue Yellow passivation Hot Dip galvanised Cadmium Plated Blackened Nickle plated and Chromium Plated ASTM A193 Grade B7 bolts and threaded studs are manufactured from a chromium molybdenum steel and are quenched and tempered heat treated to develop the desired mechanical properties strength Grade B7 is the most common grade of A193 bolts used in construction B7 threaded studs and short headed bolts are readily available in the marketplace

ISO Certified Grade 5 6 Bolts manfuacturer in India Check High Tensile class 5 6 Threaded Rod and Stud Bolt Dimension Chart View Grade 5 6 Hex Bolt Updated Price list ex Mumbai22 11 2021 nbsp 0183 32 1 1 4 inch 31 75 mm 1 3 8 inch 1 5 8 inch 41 3 mm 2 inches 50 8 mm 2 1 2 inches 3 inches 3 1 2 inches Lip sizes are also one of the most important things to know because they determine how the pieces of metal studs will fit together Here are a couple of typical metal stud sizes as it relates to lip size Grade B7 Threaded Stud amp Rod Same as Grade 5 Use with Grade 2H and Grade C nuts Grade C Nuts Strength exceeds Grade 5 Use with heat treated medium strength steel fasteners like ASTM A325 structural bolts Grade G Nuts Strength is similar to Grade 8 Use with ASTM A325 structural bolts bolting torque table 2a cold service astm a320 grade l7 stud bolts bolting torque table 3 use only with a193 b8 cl1 bolts at 540 176 c 650 176 c on uninsulated flanges bolting torque table 4 use only with 6061 t6 aluminium flanges bolting torque table 5 ptfe coated astm a193 b7 and astm 193 b16 stud boltsASTM A193 Grade B8M is a material specification for high tensile stainless steel bolts stud bolts screws threaded rods and similar fasteners for high temperature applications ASTM A193 B8M is manufactured from chromium nickel stainless steel alloy 316 or uns equivalent S31600 under class 1 and 2 with minimum tensile of 75 and 100 ksi respectively

SAE J429 Grade 5 K 0 15 K 0 17 103 121 128 171 105 120 141 3706 245 1817 2371 2688 3162 278 1363 46 82 92 109 K 0 20 FNL Grade 9 Clamp Tightening Torque Load Tightening Torque SAE J429 Grade 8 K 0 15 4169 K 0 15 K 0 17 K 0 20 Unified Coarse Thread Series Fine Thread Series 3544 K 0 15 383 91 325 78 287 68 327 157 K 0 17 281 13835 Notes Bolting torque to develop 50 Bolt Yield Stress at Nut Factor K 0 12 This Table is applicable for PTFE coated bolts with K 0 12 The above Table is applicable only for A193 Grade B7 and A193 Grade B16 Stud Bolts The torque values are approved for spiral wound graphite and PTFE filled gaskets graphite sheet gaskets GHE and GHR ASTM A193 Grade B5 is a material specification for high tensile alloy steel bolts stud bolts screws threaded rods for high temperature or high pressure applications ASTM a193 B5 is 5 chromium steel with tensile of 100ksiAllied Titanium 0076632 Pack of 10 8 32 X 3 4 inch UNC Titanium Stud Grade 5 Ti 6Al 4V Currently unavailable Allied Titanium 0074622 Pack of 2 5 16 24 X 12 UNF Threaded Rod Rolled Grade 5 Ti 6Al 4V ASTM A193 Grade B5 bolts and threaded studs are manufactured from AISI 501 stainless steel which has been quenched and tempered to increase strength These bolts and studs are often used in high temperature flanged connections in highly corrosive environments

This chart helps to identify the grades of bolts using the identification marks on the bolt s head along with the strength and hardness of common grade bolts Please note the bolt heads may also include the manufacturer s identification stamp especially with high strength bolts Bolts amp Studs High quality grade 5 titanium bolts amp studs for Sprints Midgets Micros Dirt Late Models Modifieds Indy Drag amp Trucks We machine all of our bolts amp studs to the highest standards in the business Grade 5 Bolts and fasteners are made of medium strength carbon steel and are specified under the Society of Automotive Engineers SAE If your application calls for heavier materials you may need Grade 8 Bolts because they are the hardest and are often used in heavy manufacturing applications Otherwise Grade 5 bolts can be used CHANCE 174 Grade 5 Long Grounding Ball Stud 1in 25mm Designed and tested to ASTM F855 Grade 5 withstand rating of 43kA for 15 cycles or 30kA for 30 cycles For use with 1in 25mm ball stud clamps 3in nominal shank length 7in overall length 2 3 4in threaded shank with 1 2in 13 UNC Tin plated 20 9 2017 nbsp 0183 32 STUD BOLT MATERIALS The most common materials for stud bolts for flanges are ASTM A193 grade B7 B8 B8M B8T ASTM A453 grade 660 ASTM A320 grade L7 L7M and ASTM A182 duplex and super duplex bolting For aggressive fluids and environments stud bolts can be coated with Xylan Xylar and other materials