SAE Grade 8 High Strength Steel Hex Head Bolt

SAE J429 Grade 8 Hex Head Bolt and Nut
High tensile steel, Cr40Mo
Zinc Galvanizing, 72 Hrs Salt Spray Test free of red rust
Size 5/16 UNC, Length 3/4 inch up to 2 inch


Widely used in Construction, Machinery, Electricity Transimission Facilities
Dacromet Coating, Ruspert Coating Options
High tensile bolt, high strength bolt
DIN metric size grade 8.8, 10.9 and 12.9
M12x25 up to M36x300
ANSI B18.5 Inch Size SAE Grade 8
Size 7/16x1 up to 1.1/2x5 inch
Optional Mechanical Features comply to
SAE, ASTM, DIN, JIS, etc


Transhow Fasteners, manufacture various bolts, hex bolts, round head bolts, square head bolts,
T head bolts, dog head bolts and other customized bolts, special use bolts.
Metric standard bolts as DIN, EN, ISO, GB, JIS, AS, UNI, etc.
Inch standard bolts as ASME/ANSI, ASTM/SAE/IFI, BS, etc.
Material used for producing the bolt could be carbon steel, alloy steel, stainless steel and brass.
Headed bolts for size below M24 (or 1 inch) generally Cold forged and bigger sizes will be hot forged.
For various corrosion resistant and strength purpose, our bolts could be further treated such as heating, black oxide, zinc coating, hot dipper galvanizing, black zinc coating, brass coating, nickle and chrome plating, dacomate, etc. Interested buyers please contact us now!


Structure Bolts & Heavy Hex Bolts, High Strength Bolts
High strength heavy hex structure bolts are designed for steel-to-steel structural connections in varius buildings, highway and railway, bridge contructions. Structure bolts usually accompanied with heavy hex nuts. Material used for heavy hex bolts and nuts are generally middle carbon steel, alloy steel. Finished bolts and nuts are usually black oxide, hot dipper galvanized. Please find our below standard supplies:
DIN 6914 High-strength hexagon head bolts with large widths across flats for structural steel bolting
DIN 7990 Steel hexagon head bolts for structural steel bolting for supply with hexagon nuts
ISO 7411 ISO 7412 Hexagon bolts for high-strength structural bolting with large width across flats
EN 14399 Hexagon head bolts for steel structure
ASTM A193, A194, A307, A320, A325, A354, A490 heavy hex bolts and structure bolts.
BS 1769 Hexagon nuts Heavy style, BS 4395 High strength bolts with large hexagon head