Stainless Steel Carriage Bolt for Marine Application

📋 Basic Information

Model NO.

Bolt

Connection

Common Bolt

Head Style

Round

Standard

DIN, ANSI

Grade

8.8

Application

Machinery, Chemical, Building

Finish

Plain

Experience

20 Years

Quality Control

100% Inspection

Specification

M4-M128

Origin

China

HS Code

7318159090

🔩 Stainless Steel Carriage Bolt

Industrial Carriage Bolt for Reliable Power Transmission

Our carriage bolts are designed for industrial applications where stable fastening and reliable performance are required. Widely used in power transmission systems, conveyor equipment, and mechanical assemblies, these bolts meet various operating conditions and installation requirements.

📏 Technical Specification

Material	1. Stainless Steel: SS201, SS303, SS304, SS316, SS410, SS420 2. Steel: C45, C46, C20 3. Carbon Steel: 1010, 1035, 1045
Grade	SAE J429 Gr.2, 5, 8; ASTM A307Gr.A, A193 B7, B8, B8M, A194 2H, Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9
Finish	Plain, Zinc Plated (Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G
Thread	UNC, UNF, UEF, UN, UNS
Standard	ISO, DIN, ANSI, JIS, BS and Non-standard
Certificate	ISO9001, CE, SGS, BV

🖼️ Product Showcase

⚙️ Quality Control & Equipment

Quality control is implemented at every stage of production. From raw material inspection to in-process monitoring and final inspection before shipment, we follow defined procedures to ensure dimensional accuracy and consistency.

📦 Packaging & Logistics

Safe Packing: Cartons, wooden cases, and pallets with clear labeling.
Efficient Export: Extensive experience in global shipping and logistics.
Flexible Scheduling: Supporting both small-batch orders and mass production.

💡 Frequently Asked Questions

Can you produce customized fasteners based on drawings?

Yes. We support customized production based on drawings, samples, or technical requirements. Customers can provide drawings in PDF, DWG, or STEP formats.

What materials are available for your fasteners?

We offer fasteners in common industrial materials such as stainless steel, carbon steel, alloy steel, aluminum alloy, copper, and other special alloys based on requirements.

What surface treatments can be provided?

We provide multiple treatments including zinc plating, hot dip galvanizing (HDG), black oxide, phosphate coating, and other customized finishes.

Do you provide samples before mass production?

Yes. Standard item samples are often available quickly. For customized items, we arrange sample production after confirming drawings and specifications.

How is the quality controlled throughout the process?

Quality control includes raw material verification, in-process inspection during forming/machining, and a final 100% inspection before packing and shipment.

What are the typical packaging options for export?

Options include cartons (Max 25kg), wooden cases, and pallets. Labels include size, grade, quantity, and lot information to ensure full traceability.