Are these screws suitable for construction?

Yes, they are designed to withstand substantial loads and deformations in steel construction.

What is the surface treatment?

The screws feature an oxidation black coating for enhanced corrosion and wear resistance.

Do you provide quality inspection?

Yes, we perform 100% visual and function inspection on all finished products.

High Strength Semi-Round Head Hexagon Screws with Oxidation Black Coating

Name: High Strength Semi-Round Head Hexagon Screws with Oxidation Black Coating
Brand: Hebei Tengyun New Materials Co., Ltd
SKU: 2090055322

Hebei, ChinaHebei Tengyun New Materials Co., Ltd

US$0.10

1 Piece

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Round Head

Model NO.

1-1

Groove

Hexagon

Connection

Common Bolt

Head Style

Round

Standard

DIN

Grade

12.9

Surface Treatment

Oxidation Black

Thread Type

Full Thread

Whether to Support Customization

Support

Scope of Application

Construction, Manufacturing

Transport Package

Container

Specification

1-30

Trademark

Huilin

Origin

Handan, Hebei

HS Code

0101101010

Production Capacity

50000

Key features

High Strength Performance: Manufactured from low-carbon alloy or medium carbon steel with heat treatment for superior tensile strength.

Precision Hexagon Design: Inner hexagon hole ensures even force distribution and reduces slipping with Allen wrench.

Corrosion and Wear Resistance: Advanced oxidation black coating and surface treatments prolong lifespan and durability.

Versatile Applications: Ideal for mechanical assembly, building structures, and electronic device components.

Effortless Installation: Hexagonal configuration allows for exceptional torque transmission and streamlined tightening.

Customization Support: Supports full customization, minor customization, and flexible customization from samples or designs.

Strict Quality Control: 100% visual and function inspection for finished products with traceable raw materials.

Fast Delivery: Average lead time within 15 workdays for both peak and off-peak seasons.

Company profile

R&D CapabilitiesProduction Process VisualizationQuality AssuranceHigh Repeat Buyers Choice

Hebei Tengyun New Materials Co., Ltd

Hebei, 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: 1 Year CertifiedNearest Port: Tianjin PortAverage Response Time: ≤8.60h

AI-Powered supplier vetting

SummaryThe supplier is explicitly identified as a professional technical supplier offering 3D software design and multiple customization modes. Its stated business scope covers power equipment and electronic components, machinery and metal-related products. Production information includes seven production lines and lead times within 15 working days in both peak and off-season periods. However, the supplier reports no available SDK, no in-stock capability, no overseas warehouse, no overseas agents or branches, and no valid manufacturing contract with affiliated subcontractors. Quality and supplier-management controls appear limited because finished products are checked by packing staff, production batches are not continuously reconciled, outsourcing procedures are absent, and no written service-supplier assessment procedures are maintained. Environmental assessment documentation and recent fire-drill activity are reported, but no specific certifications, customer cases, or after-sales service arrangements are...

Supplier typeThe supplier is explicitly described as a professional technical supplier. Its registered business scope spans power facilities and electronic components, mechanical parts, metal products, tools, structures, wire rope, chains, and related manufacturing and sales activities, indicating a broad industrial manufacturing and trading profile.

R&D capabilityThe supplier provides 3D software design services and is identified as having professional technical R&D capability, supporting some product-development capability. However, it explicitly has no available SDK, and the slices provide no information on patents, proprietary technologies, or measurable R&D outputs.

Production capacityThe supplier reports seven production lines and average lead times within 15 working days in both peak and off-season periods. Countervailing controls are weak: there is no valid manufacturing contract with affiliated subcontractors, no continuous production-quantity reconciliation, no outsourcing SOP, no in-stock capability, and finished products are checked by packing staff.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides 3D software design services, indicating broad stated support for customized development and design work.