DIN558 Black Hexagon Head Bolt High Tensile Fastener

The most popular used bolts, compatiable with Hexagon nuts (Hex nut).
We produce and export both metric and inch specifications.

Standard Supplies: DIN933 ISO4017, DIN558, DIN931 DIN4014, DIN601, DIN960, DIN961, ISO 4018,

ISO 8676, ISO 8765, UNI 5737, UNI 5739, JIS B1180, EN3006, EN3007, EN3008, EN 24015, EN 24017,

ANSI B18.2.1, ANSI B18.2.3.5M, ASTM A307, A563, F594, IFI 513, IFI 541, BS1769, BS4190, BS4395
Diameter: M4-M52;
Length: 20-220;

we can offer hex bolts with further treatment such as heating, black oxide, zinc coating, hot dipper galvanizing, black zinc coating, brass coating, nickle and chrome plating, dacomate, etc.

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.
DIN 6914 DIN7990 ISO 7411 /7412 EN14399
ASTM A193, A194, A307, A320, A325, A354, A490

Hex Socket bolt also called hex socket cap screw.
The most widely used are DIN912/ISO4762 hex socket cap screw and ANSI B18.3 socket head cap screws.

serrated flange and smooth flange, the so called flat bearing surface.
Metric series carbon steel hex flange bolts generally supplied in class 8.8, class 10.9 and class 12.9 as perDIN6921 and ISO standard.

High strength bolts are used in heavy structure joint. I
the normal available specifications of the bolts size is 1/2" or M12 up to 1.1/2" or M42.
ASTM a325
ASTM a490
HDG,Dacomt

Carriage bolts, also called coach bolts, have a mushroom-like head with a square neck.

The metric standard carriage bolts are DIN 603 with material class 4.8, 6.8 and 8.8.

Inch standard carriage bolts, ANSI/ASME B18.5 dimensions and drawings.

The common counter sunk head screws are DIN965 (ISO7046) cross recess csk head machine screws, DIN963 (ISO2009) slotted counter sunk head machine screws.
DIN7967,
class 4.8, 6.8 and 8.8 10.9 and 12.9

Our regular supply range for T headed bolts are M6, M8 up to M16 according to DIN/ISO metric standard. The related inch size from 1/4" up to 5/8" UNC according to dimensional standard ANSI/ASME B18.2.1
Different place use different class,standard,sizes

Railway bolts or highway bolts are mostly high strength bolts that are used in railway track or highway fencing and structure fastening and joint.
The regular sizes are M24 up to M30 or 1" up to 1.1/4" UNC. Some special threads available, like T thread.

Bent bolts are a external threaded fasteners with its body bent to some shape, like U shape or Eye shape and called U bolt or Eye bolt.

Wheel bolts or studs, lug nuts and wheel nuts are fine threaded fasteners that hold on the wheels to the vehicle hub, or secure a wheel on a vehicle.
We produce regular size M10, M12 and M16 wheel bolts

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We have many years production experience and export experience, and we are 7 years Alibaba Golden Member.

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All our goods are made of best materials from the best suppliers. 

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It is the top service from material die-cutting, polishing, craftsmanship, QC, packing, delivery, therefore quality is 100% assured.

4. Quality control
Every single piece of product, every production, procedure is inspected and controlled before packing the goods into export carton. 
We ensure every of product shipped are of good quality. 

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