What if I cannot find the product on your website?

You can send pictures, photos, or drawings by email for us to check. We develop new models every month or can develop special models for you if you send samples.

Which mode of transport is better?

In general, we advise delivery by sea because production items are heavy. However, we respect your views on other transportation methods as well.

What are the available material grades?

We offer Carbon Steel, Alloy Steel, Stainless Steel (A2, A4, 304, 316), and Brass with grades including 4.8, 8.8, 10.9, 12.9, and Grade 2/5/8.

304 A2 Mushroom Head Square Neck Coach Bolt Carriage Bolt

Name: 304 A2 Mushroom Head Square Neck Coach Bolt Carriage Bolt
Brand: Shanghai G&T Industry Co., Ltd.
SKU: 2035518322

Shanghai, ChinaShanghai G&T Industry Co., Ltd.

US$0.01-0.10

1,000 Pieces

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head

Model NO.

Carriage Bolt

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, GB

Grade

4.8

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Color-Zinc Plated

Size

M6, M8, M10, M12, M20, M48

Coating

Plain,Black Oxide, Zinc Plated(Clear/Blue/Yellow/B

Diameter

M6, M8, M10, M12, M20, M48, 1/2"

Length

10, 20, 40, 60, 1"

Lead Time

15-60 Days

Sample

Accepted

Using

Right Hand Threads

Surface Treatment

Zinc Plated, Black Oxide, Copper Plating...

Thread

Full Threaded

Payment Term

Tt 50% Deposit

Area

Industry, Machine, Building

Production

Standard/Customized

Packing

Carton and Pallet

Material Grade

Stainless Steel A2 A4 304 316

MOQ

100PCS

Transport Package

Plastic Bag+ Carton+Wood Pallet

Specification

1/4"-4", M4-M100

Trademark

G&T

Origin

Shanghai, China

Production Capacity

1000 Tons/Month

Key features

Wide Customization Options: Supports custom sizes, coatings, and materials including Stainless Steel A2/A4 304/316.

High Precision Manufacturing: Strictly follows drawing tolerances to provide high-precision parts and custom models.

ISO 9001 Quality Assurance: Processes adhere to ISO9001:2008/2015 standards with strict quality control from production to delivery.

Fast Delivery for Standard Parts: Standard parts delivered in 7-15 days; non-standard parts in 15-25 days.

Comprehensive Surface Treatments: Offers Plain, Black Oxide, Zinc Plated, H.D.G, Nickel, Chrome, PTFE, and more.

Free Samples Available: Customers can send drawings or samples for development, with free samples provided.

10+ Years Industry Experience: Over a decade of expertise in fasteners with professional technical support and advice.

Flexible Payment Terms: Accepts T/T, L/C, West Union, and PayPal with flexible deposit and balance options.

Company profile

Years of Export ExperienceHigh Repeat Buyers ChoiceFast DeliveryManagement Certification

Shanghai G&T Industry Co., Ltd.

Shanghai, China

Business Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 10 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤1.50h

AI-Powered supplier vetting

SummaryShanghai G&T Industry Co., Ltd. is identified as a limited trading company offering bolts, nuts, threaded rods, stud bolts, and customized fasteners. The supplier reports broad customization, ODM capability, new products launched during the past year, and OEM service for well-known brands. Stated annual productivity includes 6,000 tons of thread rods, 5,000 tons of bolts, 5,000 tons of nuts, 3,000 tons of washers, and 3,000 tons of stud bolts. Service procedures include documented supplier assessment, corrective and preventive actions, and customer complaint handling, with lead times within 15 workdays in both peak and off-season. However, the supplier has no overseas agents or branches, overseas warehouse, showroom, or inventory capability. Raw-material traceability, quality assurance status, outsourcing controls, and contract status are unknown. An audit by TUV Rheinland is recorded, but the audit type and evaluation result are not sufficiently interpretable from the provided values.

Supplier typeThe supplier is a limited company classified as a trading company, with a stated business scope covering metal materials, hardware, machinery, and related products. Its offered products are bolts, nuts, threaded rods, stud bolts, and customized fasteners, and it is not identified as part of a larger company group.

After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions and customer complaint handling. It has no overseas agents or branches, overseas warehouse, showroom, or in-stock service capability, which limits local and immediate after-sales support.

R&D capabilityThe supplier reports new products during the past year, ODM service, and multiple design-based customization options. It does not have an available SDK, but the available evidence supports product development and design capability.

Production capacityReported annual productivity is 6,000 tons of thread rods, 5,000 tons each of bolts and nuts, and 3,000 tons each of washers and stud bolts. Lead time is stated as within 15 workdays in both peak and off-season; however, the supplier also reports no inventory capability, while outsourcing procedures and manufacturing-capacity contracts remain unknown.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. Its product scope also expressly includes customized fasteners, and it reports ODM capability.

Product Q&A

Q:How is product quality ensured?

All processes strictly adhere to ISO9001:2008 procedures with strict quality control from producing to delivery, supported by strong technology and experienced management.

Q:Can you follow drawing tolerances for high precision?

Yes, we can strictly follow the tolerance on the drawing and provide high precision parts made exactly as per your drawing.

Q:How should I order and make payment?

By T/T. For samples, 100% payment with the order; for production, 30% paid as deposit before production arrangement, and the balance to be paid before shipment.

Q:What is the delivery time?

Standard parts: 7-15 days. Non-standard parts: 15-25 days. We aim to make delivery as soon as possible while guaranteeing quality.

Q:How to custom-made (OEM/ODM) products?

Send us your new product drawing or sample. We can custom-make hardware as required and provide professional advice to maximize performance.