Our Advantages Product Description Tool Set Content 1 pcs 1/4" Dr. Torque Wrench H2-H10 Bit Sockets, T10-T30 Bit Sockets 1 pcs 1/4" Dr. Socket Extension Bar Size 1/4 inch Material Alloy Steel N. m 2-20 Surface Treatment Chrome/Matt Standard DIS ISO 6789, ASME, B107.14 and GB/T15729 Packaging Plastic Boxes with Cartons Brand Union Certification CE, EMC, RoHS, UL, GS, PROP65 Origin China Torque Wrench Socket Set Torque wrenches are specialized tools designed to tighten bolts, nuts, and other hardware to an exact target torque value. Using precise torque is critical for securing parts without overstraining the threads or leaving dangerous looseness. Torque wrenches allow mechanics and engineers to apply optimal torque quickly and consistently. How Torque Wrenches Work Torque wrenches have a ratcheting head calibrated to the desired torque value. As the wrench is pulled, internal springs compress. Upon reaching the preset level, the wrench head slips and emits an audible "click" to signal target torque is achieved. This prevents overtightening. Locking collars allow securing the torque setting. Most wrenches have exchangeable drive sizes like 3/8" or 1/2" to match various bolt and socket heads. Main Fastener Coating Types Application Spray Test Hours Characteristics Mirror Nickel-plating ALL Metal 72Hours Stable Excellent polishing performance Improve Wear resistance Wide range of applications Matt Nickel-plating ALL Metal 72Hours Black Nickel-plating ALL Metal 48Hours High absorption rate of solar energy Used in solar collector panels. Manganese Phosphate ALL Metal 72Hours Enhanced resistance Sand Blast ALL Metal - Remove paint, rust, and residue scratches or casting marks Electrophoresis ALL Metal 1000Hours Maintain metallic luster Anti-corrosion properties Color Electroplating ALL Metal 96Hours Improve mental strength Prevent metal oxidation Steel Material Chemical Composition Types C Si V Cr Mn Ni Mo Characteristic CR-MO 0.18-0.23 0.15-0.35 - 0.40-0.60 0.90-1.20 - 0.13-0.20 41xx-series SAE steel grades Excellent strength-to-weight ratio Stronger and harder Not easily welded CRV 0.5 0.3 0.18 0.80-1.10 0.70-0.90 - - 6000-series SAE steel grades Suitable for hardening Resist abrasion, oxidation, and corrosion Improve material elasticity S2 0.40-0.55 0.90-1.20 <0.50 - 0.30-0.50 <0.30 0.30-0.60 One of seven types of shock-resisting steels under the AISI Classification High strength High toughness Wear resistance High hardness Resistance to shock loading 45# 0.42-0.05 0.17-0.37 - &le;0.25 0.50-0.80 &le;0.25 - Compared with A3, it has higher strength and resistance to deformation. A3 0.95-1.05 0.10-0.50 0.15-0.50 4.75-5.50 0.40-1.00 - 0.90-1.40 High-quality high carbon alloy tool steel Product Application Company Profile Quality Control Certifications FAQ