Carbon steel fastener manufacturers & suppliers in China

Hex Bolts | Socket Screws | Flange Bolts | Carriage Bolts | Stud Bolts | Threaded Rods | Anchor Bolts | Custom Carbon Steel Fasteners
DIN / ISO / ASTM / ANSI standards available
High Strength Carbon Steel Fasteners (Grade 4.8 / 5.8 / 8.8 / 10.9 / 12.9)
Cost-effective / High Load Capacity / Wide Surface Treatment Options
Zinc Plated / Hot-Dip Galvanized / Black Oxide / Dacromet / PTFE / Plain Finish

International Standard Certification

High-precision manufacturing process

1-on-1 Customization Service

Full range of products covered

Carbon steel fastener Introduction

Carbon steel fasteners are widely used in structural and industrial applications due to their high strength, durability and cost-effectiveness. XZ Fastener supplies a full range of carbon steel bolts, nuts, screws, washers, threaded rods and anchor bolts in grades such as 4.8, 8.8, 10.9 and 12.9. With flexible surface treatments including zinc plating, hot-dip galvanizing, black oxide and Dacromet, carbon steel fasteners can meet different environmental and performance requirements. They are an ideal choice for construction, machinery, steel structure and general engineering projects where strength and value are essential.

Notice: All products below can be produced in carbon steel. The images may show different materials for reference, but we can customize them in carbon steel with required grades and surface finishes.

We have a comprehensive product line of fasteners. If you cannot find the product you need, it may not have been updated and listed yet. Please click here to contact our staff for confirmation.

Carbon Steel Fastener Supply Capability

We supply standard and custom carbon steel fasteners in various grades, sizes, thread types and surface finishes to meet different industrial and structural fastening requirements.

ItemAvailable Options
Product RangeHex Bolts, Socket Screws, Nuts, Washers, Threaded Rods, Stud Bolts, Anchor Bolts, Self-tapping Screws, Custom Carbon Steel Fasteners
StandardsDIN, ISO, ASTM, ANSI, EN, JIS, BS, GB and custom standards
Common StandardsDIN 931, DIN 933, DIN 912, DIN 934, DIN 125, DIN 127, ISO 4014, ISO 4017, ISO 4032, ASTM A193, ASTM A194, ASTM F1554
MaterialLow Carbon Steel, Medium Carbon Steel, High Carbon Steel, Alloy Carbon Steel
Grades / Strength4.8, 5.8, 8.8, 10.9, 12.9, ASTM A193 B7, ASTM A194 2H, ASTM A563 DH
Size RangeMetric: M2–M64, Inch: 1/8″–2″, customized sizes available
Thread TypesMetric Thread, UNC, UNF, BSW, Coarse Thread, Fine Thread, Full Thread, Half Thread, Custom Thread
Surface FinishZinc Plated, Hot-Dip Galvanized, Black Oxide, Dacromet, Zinc-Aluminum Coating, PTFE Coating, Phosphate Coating, Plain Finish
Manufacturing ProcessCold Forging, Hot Forging, Machining, Thread Rolling, Heat Treatment, Surface Treatment
Custom ServiceMade to drawing, made to sample, special size, special grade, special coating, logo marking and customized packaging
CertificatesMTC, Inspection Report, CO, EN 10204 3.1 certificate available upon request
ApplicationsConstruction, Machinery, Steel Structure, Automotive, Infrastructure, Energy, Railway, Bridge and General Industry

Please send us the product type, size, standard, grade, finish and quantity. We will provide a suitable quotation as soon as possible.

FAQs

We supply carbon steel bolts, nuts, washers, screws, threaded rods, stud bolts, anchor bolts and custom non-standard fasteners.

We can supply grades such as 4.8, 5.8, 8.8, 10.9, 12.9, ASTM A193 B7, ASTM A194 2H and ASTM A563 DH.

Available finishes include zinc plated, hot-dip galvanized, black oxide, Dacromet, zinc-aluminum coating, PTFE coating, phosphate coating and plain finish.

Yes. For outdoor applications, we recommend hot-dip galvanized, Dacromet, zinc-aluminum coated or PTFE coated carbon steel fasteners for better corrosion resistance.

Carbon steel fasteners usually offer higher strength and more competitive pricing, while stainless steel fasteners provide better corrosion resistance, especially in marine or chemical environments.

Yes. Grade 8.8, 10.9, 12.9 and ASTM A193 B7 carbon steel or alloy steel fasteners are commonly used for machinery, steel structures and heavy-duty applications.

We support DIN, ISO, ASTM, ANSI, EN, JIS, BS, GB and custom standards according to project or drawing requirements.

Yes. We can supply metric sizes, UNC, UNF, BSW and other inch thread specifications. Custom thread types are also available.

Yes. We support custom production based on drawings, samples or technical specifications, including special size, grade, thread, coating, marking and packaging.

Please send the product type, standard, size, grade, surface finish, quantity, packaging requirement and destination country or port. For custom products, please provide drawings or samples.

Yes. We can provide MTC, inspection report, CO and EN 10204 3.1 certificate according to project requirements.

We inspect raw materials, dimensions, thread accuracy, hardness, mechanical properties, surface finish, coating quality, packaging and labeling before shipment.

Send us the product type, size, grade, surface finish and quantity. Our team will provide a suitable quotation for your project.

What Our Customers Say

Trusted by global manufacturers for fastener solutions

BrightBuild Hardware Ltd.
BrightBuild Hardware Ltd.
United Kingdom
XZ FASTENER has been a reliable supplier for our construction fastener orders. The bolts and nuts arrived with good surface finish, accurate sizes, and strong packaging. Communication was clear from quotation to shipment.
Andina Industrial Supply S.A.
Andina Industrial Supply S.A.
Colombia
We ordered different sizes of hex bolts, washers, and nuts. XZ FASTENER helped us confirm the specifications and provided a practical shipping solution. The quality was stable and suitable for our local market.
Falcon Engineering Supplies
Falcon Engineering Supplies
United Arab Emirates
XZ FASTENER understands export business very well. They prepared the quotation, packing details, and documents professionally. The products matched our requirements and the delivery was well organized.
Pacific Bolt & Nut Trading
Pacific Bolt & Nut Trading
Philippines
We appreciate their fast response and flexible support. Even though our order included mixed sizes and different surface treatments, XZ FASTENER handled everything carefully. Good partner for wholesale fasteners.
Monterra Hardware Group
Monterra Hardware Group
Mexico
The galvanized fasteners we received were clean, well packed, and consistent in thread quality. XZ FASTENER gave us clear product photos before shipment, which helped us feel confident about the order.
Eastern Mechanical Parts Co.
Eastern Mechanical Parts Co.
Saudi Arabia
We purchased high-strength bolts and nuts for machinery maintenance. The products were strong, accurate, and packed in export cartons. XZ FASTENER is a serious factory supplier.
GlobalFix Distributors
GlobalFix Distributors
South Africa
XZ FASTENER provides competitive pricing without ignoring quality. Their team helped us compare materials, grades, and surface treatments before confirming the order. This saved us time and reduced purchasing risk.
Nova Tools & Fasteners
Nova Tools & Fasteners
Chile
Our customers care about stable quality and good appearance. The fasteners from XZ FASTENER met our expectations. The cartons, labels, and product sorting were also handled professionally.
Delta Construction Supply
Delta Construction Supply
Kenya
We needed fasteners for construction use in several sizes. XZ FASTENER responded quickly and gave practical advice on packing and shipment. The goods arrived in good condition.
Atlas Industrial Trading
Atlas Industrial Trading
Turkey
The product quality was consistent across different batches. Threads were clean, dimensions were accurate, and the surface treatment looked good. We are satisfied with XZ FASTENER’s factory support.
RedRock Hardware Importers
RedRock Hardware Importers
Australia
XZ FASTENER helped us source both standard and customized fasteners. Their team checked drawings carefully and confirmed details before production. This is very important for B2B buyers like us.
PrimeFix
PrimeFix
Canada
We like working with suppliers who communicate clearly. XZ FASTENER gave us photos, weight information, packing details, and shipping suggestions. The whole process was smooth.

Customer Visits & Certificates

Globally Compliant Standards

All XZ products comply with major global industrial standards and are adaptable to the specifications of different countries and regions.

ISO

International Organization for Standardization (ISO) standards

DIN

German Industrial Standards

GB

Chinese National Standards

ANSI

American National Standards

JIS

Japanese Industrial Standards

XZ Sales Engineer

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