Stainless Steel Hex Flange Partial Thread Bolt
Stainless steel hex flange partial thread bolt is a high-performance fastening solution designed for assemblies requiring strong clamping force, corrosion resistance, and improved load distribution. The stainless steel hex flange partial thread bolt features a hex head with an integrated flange, reducing the need for a separate washer while improving installation stability.
The stainless steel hex flange partial thread bolt is widely used in machinery, automotive systems, construction equipment, renewable energy structures, marine equipment, and OEM manufacturing where durable industrial fasteners are required.
Product Overview
The stainless steel hex flange partial thread bolt is engineered for secure structural fastening. Its flange face spreads load over a wider contact area, helping reduce surface damage and improving joint reliability.
The partial thread design provides a smooth shank section for better shear resistance and alignment. This makes the stainless steel hex flange partial thread bolt suitable for high-strength mechanical connections and vibration-prone assemblies.
Product Specifications
| Item | Description |
|---|---|
| Standard | DIN / ISO / Custom |
| Product Name | Stainless Steel Hex Flange Partial Thread Bolt |
| Material | Stainless Steel 304 / 316 / 304L / 316L |
| Thread Type | Metric Partial Thread |
| Head Type | Hex Flange Head |
| Drive Type | External Hex |
| Diameter Range | M5–M30 |
| Length Range | 12mm–300mm |
| Surface Finish | Natural / Passivated / Polished |
| Strength Grade | A2-70 / A4-70 / A4-80 |
| Thread Direction | Right Hand |
| Packaging | Carton, pallet, OEM packaging |
| Customization | Size, material, flange type, thread length, marking |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | 700–800 MPa, depending on grade |
| Yield Strength | 450–600 MPa |
| Hardness | HV 200–250 |
| Density | 7.93 g/cm³ |
| Corrosion Resistance | Excellent, especially 316 in marine environments |
| Operating Temperature | -50°C to 400°C |
| Thread Tolerance | 6g |
| Manufacturing Standard | DIN / ISO / Customer drawing |
Materials and Manufacturing Process
Production starts with premium stainless steel wire or bar. Material is selected according to corrosion level, strength requirement, and application environment.
The process includes raw material selection, cold forging, hot forging for larger sizes when applicable, CNC machining, thread rolling, solution treatment when required, surface finishing, cleaning, inspection, and packaging.
Cold forging forms the hex flange head with consistent geometry. CNC machining controls special dimensions. Thread rolling improves fatigue resistance and thread accuracy. Passivation enhances corrosion resistance, while final cleaning ensures a clean stainless surface.
Each stainless steel hex flange partial thread bolt is inspected before shipment.
Applications of the Product
This bolt is widely used in construction, machinery, automotive, renewable energy, petrochemical equipment, marine systems, food equipment, industrial equipment, and manufacturing systems.
Its flange head improves load distribution, while the partial thread shank improves alignment and shear performance. Therefore, it is suitable for equipment frames, brackets, motor bases, steel structures, solar mounts, and OEM fastener assemblies.
Why Choose This Product
This product offers premium raw material, high precision manufacturing, strong corrosion resistance, stable mechanical performance, long service life, bulk supply capability, OEM/ODM support, fast delivery, and export experience.
The stainless steel hex flange partial thread bolt is ideal for buyers needing reliable stainless steel fasteners with efficient assembly performance.
Why Choose Flybear
Flybear provides professional manufacturing and supply services for industrial fasteners.
Flybear offers manufacturing capability, inventory strength, custom production, engineering support, global supply ability, and technical consultation. We support OEM manufacturers, distributors, EPC contractors, and purchasing managers with reliable fastening solutions.
Quality Inspection and Control
Quality control includes chemical composition analysis, tensile testing, hardness testing, salt spray test, thread gauge inspection, dimensional inspection, surface inspection, flange geometry inspection, and packaging inspection.
Production follows ISO quality system compliance to ensure stable batch quality and dependable industrial performance.
Selection Guide
When selecting stainless steel hex flange partial thread bolts, consider material type, diameter, length, thread length, load requirements, indoor or outdoor environment, corrosion level, and matching nuts.
For marine or chemical environments, 316 or 316L stainless steel is recommended.
FAQ
What is a hex flange bolt?
It is a bolt with a hex head and integrated flange for better load distribution.
What is the benefit of partial thread?
Partial thread provides better alignment and shear resistance in structural joints.
Is stainless steel rust resistant?
Yes. Stainless steel offers strong corrosion resistance, especially 316 in harsh environments.
Can custom sizes be produced?
Yes. Custom size, material, thread length, flange design, and packaging are available.
How to request quotation?
Send size, material, quantity, drawings, surface finish, and application details.
The stainless steel hex flange partial thread bolt provides corrosion resistance, secure fastening, and reliable performance for industrial applications. For quotation, customization, and technical support, please Contact Us.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
