Galvanized Carbon Steel Screws External Hexagon Bolt Screw 8.8 US Standard 5

US standard 5 external hexagon bolt grade 8.8 screw manufacturers galvanized carbon steel quality assurance

Material 35K

High strength

surface treatment Blue and white zinc

standard No. ANSI/ASME B18.2.1

Strength Grade US Grade 5

The reason to choose us

The craftsmanship is durable

Source factory, factory direct sales, quality assurance, deep thread,

uniform tooth spacing, clear lines, force symmetry when using, and fastening strength is good

Standard outer hexagon standard hexagon size, clear diamond Angle,

use to bite tightly, not easy to open

The thread surface is smooth and flat, the thread is sharp,

the tapping speed blocks, it is not easy to lose teeth,

and it is not easy to be pulled into a jack

Support customization

Size, half teeth, surface treatment, and grade are decided by the customer,

according to the drawings or samples provided by the customer

The company specializes in the production and operation of German standards (DIN)

American standards (ANSI, ASME) international standards (ISO)

National standards (GB)

Japanese standards (JIS)

British Standards (BSW)

and other standard parts and non-standard

high-strength bolts and advanced expansion bolts (such as elevator expansion)

material designed from a variety of carbon steel,

stainless steel 304,316, products are widely used in high-speed rail, automobiles, etc. Marine, machinery, mold,

electronics, and construction fields. And with its excellent performance, fast installation,

beautiful appearance, stability, and many other advantages,

favored by domestic and foreign merchants. 

Business varieties:

1. Bolt tired (American hex bolts, American hex bolts, American carriage bolts, American flange bolts, etc.)

2. Screws (American machine screws, British machine screws, drilling screws,

forbidden screws, race screws, hexagonal wood screws, self-tapping screws)

3. Nuts (American hexagon nuts, K caps, nylon, stamped metal self-locking nuts,

hexagon flange nuts, cap nuts, rivet nuts, etc.)

4. Others (semi-hollow rivets, step rivets, and various non-standard fasteners)

Application: construction site, furniture repair, machinery,

electronic products, ships, electronic equipment