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Fatigue tests: M56 M48 M42 M39 stud bolt
SAE J429 Grade 8 stud Dimension: according to customer’s drawing.
SAE J429 Grade 8 stud Thread: UNC
SAE J429 Grade 8 stud Chemical composition: according to SAE J429 requirements.
SAE J429 Grade 8 stud Mechanical and physical properties:
- Tensile strength: min 150000 psi
- Yieldstrength: 130000 psi
- Percentage elongation after fracture for machined test pieces, A: min 12%
- Percentage reduction of area after fracture for machined test pieces, Z: min 35%
- Surface Rockwell hardness 30N: max 58.6
- Core hardness Rockwell: minC33-39
Grade Identification Marking
The stud bolts that produced by Anyang Longteng have high performance, high tensile strength. Impact energy ofSAE J429 Grade 8 bolts at -40℃ can be 60J, which means quite good performance in low temperature. So that the studs can be used in cold weather oil platform. Highest tensile strength that Anyang Longteng Group can produce, is SAE J429 Grade 8. The bolts provide steel structures and machineries high property to bend, strength, pre-stress, post-tension. So that the studs are widely applicated in wind turbine foundation, wind turbine blade, shipbuilding, bridge, big machineries. roof supporting, etc.
Designation: Grades are designated by numbers where increasing numbers represent increasing tensile strength and by decimals of whole numbers where decimals represent variations at the same strength level.
Bolts and screws are normally available in Grades 1, 2, 5, 5.2, 8, 8.2
Studs are normally available in Grades 1, 2, 4, 5, 8, 8.1
Chemical composition:
All fasteners shall be made of steel conforming to the chemical composition requirements in Table 2
Refer to SAE J403, J404, J1268 for chemical composition limits of standard steel grades. Other standard and non-standard steels not defined by the above standard are acceptable if the resultant fasteners comply with all of the requirements in this standard. For grades 5, 5.1, 5.2, 8, 8.1, 8.2 the maximum content of bismuth selenium, tellurium, or lead each shall be 0.02%.
Crystallization: Alloy and medium carbon steels with additive boron for manufacturing Grades 8 and 8.2 fasteners shall be fine grained steel.
Heading practice/ head forming: Hot forged
Threading practice/ thread forming: roll threaded
Coating: natural+oil, black, dacromet, zinc-plate, HDG, geomet, dorken
Machanical requirementd for Gr-8 bolts, screws, studs, sems and U bolts
| Grade designation | Nominal size
Dia, in |
Proof load(stress), ksi | Tensile strength(stress) Min, ksi | yield strength (stress) Min, ksi | Elongation
Min, % |
Reduction of are
Min, % |
Surface Hardness,
Rockwell |
Core hardness | Identification Marking |
| 8 | 1/4~1-1/2 | 120 | 150 | 130 | 12 | 35 | 58.6 | C33~C39 |
Carbon Steel SAE J429 Grade 8 Nuts
Carbon Steel SAE J429 Grade 8 Wing Nut
Carbon Steel SAE J429 Grade 8 Nylon Lock Nut
Carbon Steel SAE J429 Grade 8 Coupling Nuts
ASTM F568SAE J429 Grade 8 Dome Nut
High Tensile SAE J429 Grade 8 Eye Nuts
Carbon Steel SAE J429 Grade 8 Machine Nuts
Carbon Steel ASTM F568SAE J429 Grade 8 Cap Nuts
Carbon Steel SAE J429 Grade 8 Square Nuts
Carbon Steel SAE J429 Grade 8 T-Nuts, Tee Nuts
Carbon Stee lSAE J429 Grade 8 Knurled Nuts, Thumb Nuts
Carbon Steel SAE J429 Grade 8 Weld Nuts
ASTM F568 Grade Class SAE J429 Grade 8 Self-Clinching Nuts
Carbon Steel SAE J429 Grade 8 Bolts
Carbon Steel SAE J429 Grade 8 Bolts
Carbon Steel SAE J429 Grade 8 Lag Bolts
High Tensile Steel SAE J429 Grade 8 U Bolt
ASTM F568 SAE J429 Grade 8 Carriage Bolts
ASTM F568SAE J429 Grade 8 Square Bolt
ASTM F568SAE J429 Grade 8 Foundation Bolts
Carbon Steel SAE J429 Grade 8 Structural Bolts
Carbon Steel SAE J429 Grade 8 J Bolts
Carbon Steel SAE J429 Grade 8 Anchor Bolts
Carbon Steel Gr.SAE J429 Elevator Bolts
Carbon Steel SAE J429 Grade 8 Socket Head Bolts
Carbon Steel SAE J429 Grade 8 Weld Nuts
Carbon Steel Gr.SAE J429 Countersunk Bolts
Carbon Steel SAE J429 Grade 8 Stud Bolts
ASTM F568SAE J429 Grade 8 Stud Bolt
Carbon Steel SAE J429 Grade 8 Full Threaded Stud Bolts
Carbon Steel SAE J429 Grade 8 Double Ended Studs
Carbon SteelSAE J429 Grade 8 Tap End Stud Bolt
Carbon Steel SAE J429 Grade 8 Single End Stud Bolts
Carbon Steel SAE J429 Grade 8 Partial Thread Stud Bolt
High Tensile SteelSAE J429 Grade 8 Continuous Threaded Stud Bolt
Carbon SteelSAE J429 Grade 8 Heavy Stud Bolts
Carbon SteelSAE J429 Grade 8 Reduced Shank Stud Bolt
ASTM F568SAE J429 Grade 8 Studbolts
Carbon Steel SAE J429 Grade 8 Threaded Stud bolt
Carbon Steel SAE J429 Grade 8 Screw
ASTM F568SAE J429 Grade 8 Screw
Carbon Steel SAE J429 Grade 8 Socket Head Screws
Carbon Steel SAE J429 Grade 8 Round Head Screws
SAE J429 Grade 8 Carbon Steel Tapping Screws
Carbon Steel SAE J429 Grade 8 Flat Washers
SAE J429 Thumb and Wing Screws
ASTM F568SAE J429 Grade 8 Self Drilling Screw
Carbon Steel SAE J429 Grade 8 Socket Set Screw
Carbon Steel SAE J429 Grade 8 Eye Screw
Carbon Steel SAE J429 Grade 8 Machine Screws
Carbon Steel SAE J429 Grade 8 Button Head Screws
Carbon Steel SAE J429 Grade 8 Drywall Screws
High Tensile SAE J429 Grade 8 Slotted Head Set Screws
Carbon Steel SAE J429 Grade 8 Washers
Carbon Steel SAE J429 Grade 8 Washers
Carbon Steel SAE J429 Grade 8 Plain Washers
Carbon Steel SAE J429 Grade 8 Split Washer
Carbon Steel SAE J429 Grade 8 Spring Lock Washers
Carbon Steel SAE J429 Grade 8 Flat Washers
Carbon Steel SAE J429 Grade 8 Belleville Washers
Carbon Steel SAE J429 Grade 8 Tab Washers
Carbon Steel SAE J429 Grade 8 Ogee Washers
Carbon Steel SAE J429 Grade 8 Dock Washers
Carbon Steel SAE J429 Grade 8 Star Washer
Carbon Steel SAE J429 Grade 8 Beveled Washers
Carbon Steel SAE J429 Grade 8 Hex Washer
ASTM F568SAE J429 Grade 8 Tooth Lock Washers
Carbon Steel SAE J429 Grade 8 Hex Nuts
Carbon Steel SAE J429 Grade 8 Hex Nuts
Carbon Steel SAE J429 Grade 8 Lock Hex Nut
Carbon Steel SAE J429 Grade 8 Finished Heavy Hex Nut
Carbon Steel SAE J429 Grade 8 Hexagon Nuts
Carbon Steel SAE J429 Grade 8 Hex Head Nut
Carbon Steel SAE J429 Grade 8 Hex Cap Nuts
Carbon Steel SAE J429 Grade 8 Hexagonal Nuts
Carbon Steel SAE J429 Grade 8 Hex Slotted Nuts
Carbon Steel SAE J429 Grade 8 Hex Jam Nut
Carbon Steel SAE J429 Grade 8 High Hex Nuts
Carbon Steel SAE J429 Grade 8 Hex Machine Nuts
Carbon Steel SAE J429 Grade 8 Hex Panel Nuts
Carbon Steel High Tensile SAE J429 Grade 8 Hex Coupling Nuts
Carbon Steel SAE J429 Grade 8 Hex Bolts
ASTM F568SAE J429 Grade 8 Hex Bolt
Carbon Steel SAE J429 Grade 8 Heavy Hex Bolts
Carbon Steel SAE J429 Grade 8 Finished Hex Bolts
High Tensile Steel SAE J429 Grade 8 Hexagon Bolt
Carbon Steel SAE J429 Grade 8 Hex Tap Bolts
Carbon Steel SAE J429 Grade 8 Hexagonal Head Bolt
High Tensile Gr.SAE J429 Grade 8 Hexagon Screw Head Bolt
Carbon Steel SAE J429 Grade 8 Hex Machine Bolts
Carbon Steel SAE J429 Grade 8 Hex Flange Bolt
Carbon Steel SAE J429 Grade 8 Threaded Hex Bolts
Carbon Steel SAE J429 Grade 8 Hex Socket Bolts
CSSAE J429 Grade 8 Metric Hex Bolt
SAE J429 High Tensile Hex Bolt
Carbon Steel SAE J429 Grade 8 Threaded Rod
ASTM F568SAE J429 Grade 8 Threaded Rod
Carbon Steel SAE J429 Grade 8 All Threaded Rod
Carbon Steel SAE J429 Grade 8 Tie Bar
High Tensile Carbon Steel SAE J429 Grade 8 Studs
Carbon Steel SAE J429 Grade 8 Double End Rods
Carbon Steel SAE J429 Grade 8 Trapezoidal Threaded Rod
Carbon Steel SAE J429 Grade 8 Tie Rods
Carbon Steel SAE J429 Grade 8 Threaded Studs
Carbon Steel SAE J429 Grade 8 Industrial Studs
Carbon Steel SAE J429 Grade 8 Self-Clinching Studs
Carbon Steel SAE J429 Grade 8 Heavy Studs
Carbon Steel SAE J429 Grade 8 Fully Threaded Studs
