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4.8 8.8 Grade Galvanized Black Carbon Steel Bolt and Nut
US$500.00-600.00
1 Ton
Sample price:US$0.00/piece.Request sample
Product profile
Customization
AvailableMaterial
Carbon SteelType
Hexagon HeadModel NO.
boat and nutConnection
Common BoltHead Style
HexagonalStandard
DIN, JIS, GOSTGrade
8.8Application
Machinery, EnvironmentalFinish
BlackItem Name
4.8 8.8 Grade Bolt &NutSurface Treatment
Galvanized, Black, Color Coated, NickeSize
M6-M30Thickness
M10-M30with Across Flats
19 mmwith Across Corners
21.1 mmCertificate
SGSPrice Term
EXW, FOB, CIFDelivery Time
15-30 DaysLoading Port
TianjinTransport Package
25kgs Cartons, 900kgs for One PalletSpecification
SGSTrademark
J&JOrigin
ChinaHS Code
7317000Production Capacity
500ton/MonthKey features
Wide Grade Range: Available in 4.8, 8.8, 10.9, 12.9, A2-70, and A4-80 grades.
Extensive Surface Treatments: Options include zinc plating, hot dipped galvanized, black oxide, nickel plating, and powder coating.
Customizable Standards: Meets ISO, DIN, ANSI, JIS, BS, and non-standard requirements.
Comprehensive Certifications: Certified under GB/T19001-2008/ISO9001:2008, ROHS, and SGS compliant.
Flexible Packaging: Standard cartons or customized packaging with photos before shipment.
Free Sample Service: Samples are provided free of charge upon request.
Fast Delivery: Lead time is 7-15 working days after order confirmation.
Versatile Application: Suitable for machinery, electronics, architecture, and sports equipment.
Company profile

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2012-12-09Nearest Port: Guangzhou, Qingdao, NingboAverage Response Time: ≤15hTerms of Payment: LC, T/T, Western Union, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, FCA, EXW, Others
AI-Powered supplier vetting
SummaryGuangzhou 247 International Co., Ltd is identified as a China-based limited trading company and manufacturer/factory, founded in 2000, with products centered on wire mesh, fasteners, welding supplies, safety products, and related hardware. The supplier reports more than 10 production lines, 6–10 quality-control staff, 6–10 years of R&D engineer experience, and broad export coverage, with exports representing 90% of total sales. It states peak-season fulfillment within 15 workdays and off-peak lead time of one month. Multiple management-system certifications are listed, but the provided information does not verify certificate validity or scope. Evidence is insufficient to assess after-sales service, customization, financial credibility, or customer cases. The records also contain an inconsistency: one slice identifies this Guangzhou supplier, while another separately describes LongXL, a United States-based FPV cable company; the latter should not be attributed to Guangzhou 247.
Supplier typeThe supplier is described as a trading company in Guangzhou’s Haizhu District, while its business entity type is listed as both “Trading Company” and “Manufacturer/Factory.” Its description states that it engages in wholesale and manufacture, indicating a mixed trading and manufacturing profile.
CertificationsThe supplier lists BSCI, ISO 9000, ISO 9001, ISO 14001, ISO 14000, ISO 20000, ISO 14064, TS 16949, OHSAS/OHSMS 18001, HSE, GMP, and QC 080000 certifications. However, no certificate numbers, issuing bodies, validity dates, or applicable scopes are provided.
R&D capabilityThe supplier reports 6–10 years of total experience among its R&D engineers. This supports the existence of experienced R&D personnel, but no evidence is provided regarding patents, new product development, proprietary technology, or innovation results.
Production capacityThe supplier reports more than 10 production lines, 6–10 quality-control staff, peak-season fulfillment within 15 workdays, and an off-peak lead time of one month. Its stated wholesale-and-manufacturing profile and wire-mesh product description further support operational production capability.
Product Q&A
Q:What grades are available for these bolts?
A:
We offer 4.8, 8.8, 10.9, 12.9, A2-70, and A4-80 grades.
Q:What surface treatments are available?
A:
Options include plain, zinc-plated, yellow zinc, black zinc, brass-plated, cadmium, HDG, nickel-plating, and powder coating.
Q:What is the minimum order quantity?
A:
The minimum order quantity is 1000 pieces.
Q:How long does it take to produce an order?
A:
Lead time is 7-15 working days after the order is confirmed.
Q:Are samples available?
A:
Yes, samples are provided free of charge.
Send Inquiry
*To:
Guangzhou 247 International Co., Ltd
Guangzhou 247 International Co., Ltd*Content:
Supplier replies will be sent to your registered email
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