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High Strength Hex Head Bolt Galvanized M8 M12 M16 M27 Hex Bolt
US$0.03-3.19
100 Pieces
Sample price:US$0.50/piece.Request sample
Product profile
Customization
AvailableMaterial
Carbon SteelType
Hexagon HeadModel NO.
SA-LSConnection
Common BoltHead Style
HexagonalStandard
DIN, ANSI, GB, JIS, BSW, GOSTGrade
8.8Application
Machinery, Chemical Industry, Environmental, BuildingFinish
Hot GalvanizingName
Hex BoltMaterial Type
Steel: 35CrMoA, 35CrMo, 30CrMoA, 30CrMo, 42cr2moa,Place of Origin
Shandong, ChinaThread
Unc,Unf,Uef,Un,UnsQuality Stardard
ISO, DIN, ANSI, JIS, BS and Non-StandardR & D Service
Design and DrawingDimension
CustomizedUnique
15 Years of ManufacturingOEM and ODM
100% with Drawings and SamplesDelivery Time
30 Days After PaymentOEM Sample
About 10 DaysMOQ
2000 Pieces for Trial OrderOEM Package
Anti-Rust Package SystemInner Package
Carton Box/Plastic BagTransport Package
Plywood BoxSpecification
SGSTrademark
ShengaoOrigin
Weifang City, Shandong Province, ChinaHS Code
87089910Production Capacity
5000000PCS/MonthKey features
Comprehensive Material Options: Available in Carbon Steel, Stainless Steel, Alloy Steel, Brass, and Aluminum.
Wide Range of Grades: Offers grades from 4.8 to 12.9 and SAE Grade 2, 5, 8 for various strength needs.
Extensive Size Coverage: Diameters from 2mm to 48mm and lengths from 10mm to 500mm or custom.
Diverse Surface Treatments: Includes Zinc Plating, Hot-Dip Galvanizing, Black Oxide, Dacromet, and Plain finishes.
Full Customization Capability: Supports OEM/ODM with custom dimensions, threads, materials, and private labeling.
Strict Quality Assurance: Equipped with tensile testers, hardness testers, and salt spray testers for verification.
Global Standard Compliance: Meets ISO, DIN, ANSI, ASME, BS, GB, and JIS standards plus non-standard requests.
Flexible Packaging Solutions: Options include bulk, cartons, pallets, shrink film, and customer-specific requirements.
Company profile
Business Type: Manufacturer/Factory CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2010-04-06 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤2.41h CertifiedTerms of Payment: LC, T/T, D/P, etc.
AI-Powered supplier vetting
SummaryWeifang Shengao Machinery Co., Ltd. is a limited company focused on mechanical parts, hardware, metal tools, CNC machine tools, and related components. It identifies as a professional technical supplier and offers 3D software design and broad customization services, including sample-, design-, full-, minor-, and flexible customization. The supplier has written procedures and records for service assessment, corrective actions, and complaint handling. Its export sales share is stated at 71%–90%, with three years of export experience. However, the supplier has nine employees, only two years of total R&D engineer experience, no new products in the past year, no ODM, SDK, or overseas service infrastructure, and no stated customer cases. Audit information is provided for a TUV Rheinland audit with a validity period from September 4, 2025 to September 3, 2026, but the evaluation result is recorded as 0 and no certification name is specified.
Supplier typeThe supplier explicitly identifies as a professional technical supplier and a limited company. Its stated business and product scope covers mechanical parts, hardware products, metal tools, CNC machine tools, functional components, forgings, and powder metallurgy products; the audit record identifies mechanical parts as the primary product.
After-Sales capabilityThe supplier has clear written procedures and followed records for corrective and preventive actions and for handling customer complaints. This directly supports an established service-response process, although the slices do not provide service performance results or response-time data.
Production capacityThe supplier reports an annual production output range, six to ten quality-control staff, on-time delivery, random production quality inspection, and its own factory. It has nine total employees, so the available evidence supports an operating production capability, while capacity beyond the stated output range cannot be determined.
Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization, and also welcomes OEM and ODM requests according to its company description. These repeated statements provide direct evidence of broad customization coverage, although the separate record states that ODM is not available, creating a conflict on ODM specifically.
Product Q&A
Q:What is a Hex Bolt?
A:
A Hex Bolt, also commonly called a Hex Head Bolt or Hex Cap Screw, is a threaded fastener with a six-sided (hexagonal) head. It is designed to be tightened or loosened with a wrench or socket. Hex bolts are one of the most versatile and widely used fasteners for assembling components through a pre-drilled hole, typically used with a nut or in a tapped hole.
Q:What standards and grades do you produce?
A:
We manufacture hex bolts to meet major international standards: Metric (ISO/DIN): ISO 4014 (Full Thread), ISO 4017 (Partial Thread), with property classes 4.8, 8.8, 10.9, and 12.9. Imperial (ANSI/ASME): ANSI B18.2.1, with grades Grade 2, Grade 5, Grade 8. Stainless Steel: ISO 3506 / ASTM F593 with classes A2-70, A4-80, etc. Other Standards: BS, JIS, GB standards are also available. We can produce to your specific standard requirement.
Q:What materials are available?
A:
We offer hex bolts in various materials to suit different environments and strength needs: Carbon Steel: Most common. Grades range from low-carbon (e.g., 4.8) to medium/high-carbon alloy steel for higher grades (8.8, 10.9). Stainless Steel: AISI 304 (A2) for general corrosion resistance, AISI 316 (A4) for superior corrosion resistance (marine, chemical). Alloy Steel: For high-strength applications (e.g., 4140, 4340 for Grade 8 or 10.9/12.9 equivalents). Brass, Silicon Bronze, Aluminum: For speci
Q:What sizes and dimensions do you cover?
A:
We cover an extensive range: Metric Thread Diameters: From M3 up to M64 and larger. Imperial Thread Diameters: From #4 up to 2' and larger. Lengths: From 10mm (or 1/2') up to 500mm (20') or longer custom lengths. Thread Length: Can supply full thread or partial thread (with a defined non-threaded shank length). Head Styles: Standard Hex Head, Heavy Hex (for structural applications per ASTM A325/A490), Hex Flange.
Q:What is the difference between a Hex Bolt and a Hex Cap Screw?
A:
In common usage, the terms are often interchangeable. However, technically: Hex Cap Screw: Typically has a tighter dimensional tolerance, a chamfered end, and is designed to be used in tapped holes. It is generally of a higher grade (e.g., Grade 5/8 or 8.8/10.9). Hex Bolt: May have a slightly looser tolerance, a flat or slightly chamfered end, and is commonly used with a nut. In practice, we manufacture to precise specifications, so the intended use (with nut or in tapped hole) is more important
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