What are the available surface treatments?

Plating options include Zinc, Yellow Zinc, Black Oxide, HDG, Plain, Dacromet, Geomet, Ruspert, etc.

Are free samples available?

Free samples are available if in stock, but freight cost is paid by customers. Sample fees apply for customized samples.

High Tensile Strength 42CrMo B7 L7 B16 Hex Cap Screw Hex Head Bolt

Name: High Tensile Strength 42CrMo B7 L7 B16 Hex Cap Screw Hex Head Bolt
Brand: Guangzhou Eternal Fasteners Technology Co., Ltd
SKU: 1949332411

Guangdong, ChinaGuangzhou Eternal Fasteners Technology Co., Ltd

US$0.212

3,000-9,999 Pieces

US$0.085

10,000-29,999 Pieces

US$0.057

30,000-49,999 Pieces

US$0.022

50,000+ Pieces

Sample price:US$0.50/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head

Model NO.

ASTM A193

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ANSI, GB, JIS

Grade

4.8

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Polishing

Certification

ISO, RoHS, CE

Delivery

Sea Freight, Air, Train, Express

Service

Support Customized Service

Samples

Free If It Is Available

Surface Treatment

Zinc, Power Coating, Black Oxide, Dacromet, etc

Inspection

Optical Screening Instrument

Delivery Time

10-15 Working Days

Transport Package

Plastic Bag, Boxes and Cartons, Pallets, Customize

Specification

M5-M48

Trademark

OEM, ODM

Origin

China

HS Code

7318159090

Production Capacity

2000000pieces/Year

Key features

High Strength Material: Made from 42CrMo, Carbon Steel, Stainless Steel, and Duplex for high tensile strength.

Wide Size Range: Available in sizes from M5 to M48 to meet diverse industrial requirements.

Customizable Options: Supports customized service based on customer drawings and specific requirements.

Multiple Standards: Complies with DIN, ANSI, GB, JIS, and ASTM A193 standards for global compatibility.

Versatile Applications: Ideal for petrochemical, power generation, chemical processing, and oil & gas industries.

Various Surface Treatments: Offers Zinc, Black Oxide, HDG, Dacromet, and other plating options for corrosion resistance.

Fast Delivery: Delivery time is 10-15 working days, with flexible shipping via sea, air, or express.

Professional Manufacturer: Over 15 years of experience in fastener manufacturing with ISO, RoHS, and CE certifications.

Company profile

High Repeat Buyers ChoiceIn-stock CapacityFast DeliveryCustomization from Designs

Guangzhou Eternal Fasteners Technology Co., Ltd

Guangdong, China

Business Type: Manufacturer/Factory, Trading Company, Group CorporationExport Year: 2017-08-02Nearest Port: GuangzhouAverage Response Time: ≤0.50hTerms of Payment: T/T, PayPal, Western UnionInternational Commercial Terms(Incoterms): FOB, EXW, CIF, DAP

AI-Powered supplier vetting

SummaryGuangzhou Eternal Fasteners Technology Co., Ltd is a China-based limited company in Guangdong described as a trading company, manufacturer/factory, and group corporation. It supplies bolts, nuts, screws, rivets, washers, pins, and custom fasteners, and states that its services cover design consultation, manufacturing, and post-sale support. ISO 9001 and ISO 14001 certifications are reported. The supplier indicates a high export-sales share of 71%–90% and accepts PayPal, T/T, and Western Union. SGS conducted an audit, with the reported audit period ending in 2025, but the audit result is not interpretable from the coded value provided. Most operational, R&D, sustainability, traceability, logistics, and customer-reference fields are marked unknown. Therefore, evidence supports product scope, stated customization services, management-system certifications, and international commercial exposure, while several capability areas remain unverified.

Supplier typeThe supplier is identified as a limited company operating in China’s Guangdong province and classified as a trading company, manufacturer/factory, and group corporation. Its business engagement is in industrial equipment and components, with fasteners as the stated product focus.

CertificationsThe supplier reports holding ISO 9001 and ISO 14001 certifications. These explicitly indicate reported quality-management and environmental-management system certification, although no certificate numbers or current validity dates are provided.

After-Sales capabilityThe company states that its services extend from design consultation through manufacturing and post-sale support. However, the specific status of in-stock service capacity, overseas warehouses, overseas showrooms, and overseas agents or branches is unknown.

Production capacityThe supplier is classified as a manufacturer/factory and states that it provides manufacturing for a broad range of fasteners, with services spanning design consultation to production. Nevertheless, manufacturing-capacity contract status is unknown, and the order-fulfillment value is provided only as an unexplained code, so production scale and fulfillment performance cannot be fully assessed.

Customization capabilityThe supplier explicitly offers custom fastening solutions tailored to project requirements and reports support from initial design consultation through manufacturing. Specific private-mold R&D and 3D design capabilities remain unknown, so the existence of customization service is supported but its technical depth is not verified.