What is the payment terms?

We accept T/T, L/C, D/P, PayPal, Western Union, Money Gram, and small-amount payments.

Can you provide samples?

Yes, we provide free samples upon request.

4'' ASTM Grade B5 B6 B7 Alloy Steel Black Finished Hex Head Bolt

Name: 5/8'' 7/8'' 3/4'' ASTM Grade B5 B6 B7 Alloy Steel Black Finished Hex Head Bolt
Brand: Shanghai Borui Metal Products Co., Ltd.
SKU: 2150545392

Shanghai, ChinaShanghai Borui Metal Products Co., Ltd.

US$0.50

10-999 Pieces

US$0.30

1,000-9,999 Pieces

US$0.15

10,000+ Pieces

Sample price:US$5.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head

Model NO.

ANSI/ASME B18.2.1

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ANSI, GB, JIS, BSW, GOST

Grade

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Passivation

Size

1/4'' 5/16'' 3/8'' 7/16'' 1/2'' 9/16'' 5/8'' 3/4''

Thread Pitch

Unc / Unf

Bolt Length

18-280mm

Thread Length

Half Thread / Full Thread / Customized Length

Thread Type

Right Handed

Finishing

Black Oxide / Zinc / HDG Hot DIP Galvanized

Coating

Blue Zinc/ Yellow Zinc/ PTFE / Dacromet

Thread Class

2A / 3A

OEM

Acceptable

MOQ

10 PCS

Payment

Sample

Free

Other Service

Provide Mtc / Accept Third Party Inspection

Quantity Tolerance

+-2%

Industry

Oil, Gas, Natural Gas, Nuclear Power, Marine

Transport Package

Carton + Pallet

Specification

M4-M64, 3/16''-3''

Trademark

Origin

China

HS Code

731815

Production Capacity

50000 Pieces / Year

Key features

20+ Years Expertise: Over 20 years in producing and exporting high-quality fasteners globally.

Wide Material Range: Carbon steel, stainless steel, alloy steel, and special materials for extreme conditions.

OEM/ODM Solutions: Acceptable OEM service with full customization from samples or designs.

Fast Delivery: In-stock items ship in 3-7 days; Custom/OEM orders take 14-30 days.

One-Stop Procurement: End-to-end logistics including sea, air, land, and DDP door-to-door delivery.

Extensive Certifications: ISO9001-2008, SGS, CTI, RoHS certified with comprehensive material specs.

Global Service: Serving over 1,000 customers from 200+ countries with professional support.

Company profile

High Repeat Buyers ChoiceMulti-language PioneerExperienced TeamExhibition Experience

Shanghai Borui Metal Products Co., Ltd.

Shanghai, China

Business Type: Manufacturer/Factory, Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤1.77hTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier is a Shanghai-based limited trading company with 41 employees, focused on fasteners and related metal, mechanical, plastic, rubber, electrical, and photovoltaic products. It offers sample-, design-, and full-customization services, as well as ODM and OEM services, and reports export sales of 71%–90%. In-stock service is available, but there is no overseas warehouse, showroom, agent, or branch. Financial records are identified for 2022–2024, but no financial values or performance conclusions are provided. Service-process evidence is weak: no written corrective/preventive-action or complaint-handling procedures or records are available, while quality-assurance status and fire-drill status are unknown. No certifications, customer cases, or production facilities are explicitly documented.

Supplier typeThe supplier is identified as a limited company and trading company, with 41 employees, no stated parent-group affiliation, and a Shanghai registered and physical address. Its stated product scope centers on fasteners and related industrial products.

After-Sales capabilityThe supplier has in-stock service capacity, but it has no overseas warehouse, showroom, overseas agent, or branch. More importantly, no written corrective/preventive-action procedures or records and no written customer-complaint procedures or records are available, indicating a documented after-sales process is not demonstrated.

R&D capabilityThe supplier lists research and development of metal products and hardware products, and offers ODM services. However, no SDK is available, and the information does not provide measurable R&D resources, patents, or development outcomes; the documented capability is therefore limited but present.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, and full customization, together with ODM and OEM services for popular brands. These statements provide direct evidence of broad customization and design-manufacturing service capability.

Product Q&A

Q:What materials are available for these bolts?

We offer carbon steel, stainless steel (304/316/310), alloy steel, and special materials for extreme conditions like ultra-high/low temp or strong corrosion.

Q:What is the minimum order quantity (MOQ)?

The minimum order quantity is 10 pieces.

Q:Do you accept OEM or ODM orders?

Yes, we accept OEM and ODM solutions, including customization from samples, designs, and full customization.

Q:What are the lead times for orders?

In-stock items ship in 3-7 days. Custom or OEM orders typically take 14-30 days.

Q:What surface finishes are available?

Available finishes include plain, black oxide, zinc plated, yellow zinc plated, hot dip galvanized (HDG), Dacromet, and PTFE.