What is your delivery time?

Standard parts: 7-15 days. Non-standard parts: 15-25 days. We will make the delivery as soon as possible with guaranteed quality.

How to Custom-made (OEM/ODM)?

If you have a new product drawing or a sample, please send it to us, and we can custom-make the hardware as you require. We will also provide our professional advice on the products to make the design more realized and maximize performance.

What are your terms of packing?

Generally, we pack our goods in neutral Transparent bags, Color boxes, or plastic box + cartons. If you have a legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.

Which mode of transport would be better?

In general, the production is heavy, so we advise you to make delivery by sea. However, we also respect your views on other transportation modes.

Heavy-Duty UL Certified Carbon Steel Bolts for Mining

Name: Heavy-Duty UL Certified Carbon Steel Bolts for Mining
Brand: Hengling Metal Products (Huzhou) Co., Ltd.
SKU: 2095257582

Zhejiang, ChinaHengling Metal Products (Huzhou) Co., Ltd.

US$0.28

1,000-4,999 Pieces

US$0.25

5,000-9,999 Pieces

US$0.15

10,000-49,999 Pieces

US$0.10

50,000+ Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Mushroom Head

Model NO.

Carbon Steel Bolts

Connection

Common Bolt

Head Style

Counter Sunk Bolt

Standard

DIN, ANSI, GB, JIS, BSW, GOST

Grade

4.8

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Hot-Working

Product Name

Carbon Steel Bolts

Material Types

Carbon Steel Q235 / S235jr / C45 / A36 / 10b21

Corrosion Resistance

Rust-Resistant or Galvanized Finishes

Strength Grade

Grade 8.8 or 10.9 for High-Strength Applications

Thread Specifications

Standard Unc or Metric Threads (e.g., M8, M10)

Bolt Type

Hex Bolts, Flange Bolts, Lag Bolts, or U-Bolts

Diameter Options

M6, M8, M10, M12, M14

Length Options

Customized Lengths Available for Specific Needs

Head Type

Hexagon, Round, Flat, or Countersunk Options

Surface Treatment

Zinc-Plated, Black Oxide, or Plain

Custom Sizes

Availability of Non-Standard or Custom-Sized Bolts

Quality Certification

Compliance with ISO, ASTM, or Other Relevant Stand

Compatibility

Compatible with Various Machinery and Equipment

Application Areas

Suitable for Construction, Automotive, and Enginee

Environmental Standards

Compliance with Environmental Regulations

Transport Package

Export-Compliant Packing/Moisture-Proof Packaging

Specification

Negotiable According to Buyer's Needs

Trademark

HENGLING

Origin

Zhejiang, China

Production Capacity

5000000 Pieces/Year

Key features

UL Certified Carbon Steel: Heavy-duty bolts with UL certification for mining and industrial safety.

Custom Dimensions Available: Offer customized lengths and sizes to fit specific project requirements.

High Strength Grades: Available in Grade 8.8 and 10.9 for heavy-duty durability and stability.

Wide Material Options: Choose from Q235, S235JR, C45, and other carbon steel grades.

OEM & ODM Service: Full customization support for non-standard fasteners and special designs.

Rust-Resistant Finishes: Options include galvanized, zinc-plated, and black oxide treatments.

Fast Delivery: Standard parts ship in 7-15 days; non-standard in 15-25 days.

Quality Assurance: 100% inspection and compliance with ISO and ASTM standards.

Company profile

Importers and Exporters

Hengling Metal Products (Huzhou) Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 7 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤0.22h

AI-Powered supplier vetting

SummaryThe supplier is a combined hardware-processing and trading company offering screws, nuts, and fasteners. It reports broad customization, ODM and OEM capabilities, new products within the past year, six production lines, and seven years of export experience. Products can follow GB, DIN, ANSI, BS, and JIS standards and support various coating processes. However, quality and service controls show procedural weaknesses: finished-product inspections have instructions but no written records, and service procedures and corrective actions likewise lack records. The supplier has one quality inspector, no overseas warehouse, showroom, agents, branches, or offline trade-show participation, and does not continuously reconcile production quantities by batch or lot. Financial information is insufficient for assessment, and no specific customer names or case details are provided.

Supplier typeThe supplier is identified as a combined company whose business scope covers hardware processing and sales, fasteners, metal products, equipment, and related goods, while its offered products specifically include screws, nuts, and fasteners. This indicates a combined manufacturing/trading profile rather than a narrowly specialized entity.

After-Sales capabilityThe supplier has procedures for service assessment, corrective and preventive actions, and complaint handling, but no written records for these processes. It also has no overseas warehouse, showroom, overseas agents or branches, and has no stated overseas service countries, which limits demonstrated after-sales support capability.

R&D capabilityThe supplier reports new products within the past year, ODM services, and broad design customization. It does not have an available SDK, but SDK availability is not sufficient by itself to negate the demonstrated product-development and design-service capabilities.

Production capacityThe supplier reports six production lines, a cold-heading forming facility, and seven years of export experience, supporting established manufacturing capability for fasteners. Nevertheless, it does not continuously reconcile quantities by batch or lot, and only one quality assurance and control inspector is reported, indicating control limitations alongside the production capacity.

Customization capabilityThe supplier explicitly offers customization from samples, minor customization, customization from designs, full customization, and flexible customization. It also states that non-standard products can be customized and that various coating processes are available for screws, providing direct evidence of broad customization capability.

Product Q&A

Q:What are your main products and material supply?

Our main products include Screws, Bolts, Nuts, rivets, Special Non-standard studs, Turning parts, and High-end precision complex CNC Machining parts. We supply Carbon Steel, Alloy Steel, Aluminum alloy, Stainless Steel, Brass, Copper, Titanium alloy, or materials according to your requirement.

Q:When can I get the price?

We usually offer you a quotation within 12 hours, and special offers are not more than 24 hours. For any urgent cases, please contact us directly by phone or send an email to us.

Q:If you cannot find the product you need on our website, how do I proceed?

You can send the pictures/photos and drawings of the products you need by email, and we will check if we have them. We develop new models every month. Or you can send us samples by DHL/TNT, and then we can develop the new model especially for you.

Q:Can you strictly follow the tolerance on the drawing and meet high precision?

Yes, we can. We can provide high-precision parts and make the parts 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 a deposit by T/T before production arrangement, and the balance to be paid before shipment.