High Strength Carbon Steel Screws Hex Head Outer Hexagonal Bolts 8.8 / 10.9 / 12.9 Grade

8.8 Grade 10.9 Grade 12.9 High-Strength Outer Hexagonal Bolts, High-Strength Outer Hexagonal Full Teeth Screw

Surface treatment Oxidation blackening Strength grade 8.8 Standard number GB Material 45#

high strength bolts

External hexagon locking is not easy to slip

Thread display: deep thread, uniform pitch

Bolt head: smooth head, uniform force, good confinement effect

Texture gloss The surface gloss is as new, and the quality is guaranteed

Product parameters: selected high-quality carbon steel, easy to use, reliable performance

Product Name: Hex Head Bolts

Standard model: GB/T 5782-2000

Level: 8.8

Material: No. 45 steel

Surface treatment: quenched black

High-quality material: environmentally friendly material, hard material, wear-resistant, not easy to damage, not easy to age

Spiral thread: the thread has no burrs, is clear and tidy, and is evenly stressed

Standard external hexagon

Both sharp edges and corners

Tight and not slippery

Professional technology: We have automated production equipment, standardized management, advanced testing equipment, and instruments

Product support ability

One: mechanical skills: bolts (4.8S/6.8S/8.8S/10.9S/12.9S) nuts (4H/8H/10H/12H)

Two: Material: Q235, Q345B (16 manganese), 35#, 45#, 35CrMoA, 40Cr, etc.

Three: Surface treatment: blackening, hot-dip galvanizing, Dacromet, galvanizing, electro-galvanizing, electro-nickel plating, etc.