Precision Cold Drawn Hex Bar Manufacturer
Welcome to YaDa Metal, a premier cold drawn hex bar factory located in Tianjin, China.
We specialize in producing precision cold drawn hex bars featuring exact Across Flats
(A/F) dimensional tolerances, excellent straightness, and a flawless bright surface.
Whether you are operating high-speed CNC multi-spindle automatic lathes or manufacturing high-strength
industrial fasteners, our cold drawn hexagonal steel bar eliminates the need for extensive
secondary milling, saving you significant time and material costs.
- Exact A/F Control Stable across-flats size for bolts, nuts and fittings.
- CNC Feed Ready Straight bars help reduce feeder jamming and vibration.
- Bright Surface Smooth, scale-free finish to reduce secondary machining.
Made for Fastener & CNC Machining
Custom hexagonal steel bar sizes, grades and tolerances available.
High-Quality Cold Drawn Hexagonal Steel Bar for CNC Machining
For CNC machinists and hardware manufacturers, the quality of your raw material dictates your production efficiency. As an experienced cold drawn hex bar supplier, YaDa focuses on dimensional consistency, straightness, surface cleanliness, and stable machinability to help your production line run with fewer interruptions and lower material waste.
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Zero Jamming
Perfect straightness helps prevent vibration and jamming in automated bar feeders, reducing machine stoppage, tool breakage, and rejected CNC parts.
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Ready-to-Use Surface
We deliver cold drawn hex bars with smooth surface finishes — bright, scale-free, and suitable for applications where the hex profile can serve directly as the finished outer surface of bolts, nuts, hydraulic fittings, or connectors.
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Consistent Machinability
Uniform internal grain structure through advanced cold drawing ensures stable cutting speeds, predictable chip formation, and longer CNC tool life across repeated production batches.
Production Efficiency Starts from Raw Material
Stable hex bar quality helps reduce feeder issues, secondary milling, and batch-to-batch variation.
Cold Drawn Hex Bar Specifications and Available Steel Grades
We supply both standard and metric sizes, and can tailor production for custom size cold drawn hex steel bars depending on your engineering drawings. YaDa Metal helps CNC machining plants, fastener manufacturers, and OEM component factories select the right hexagonal steel bar grade, tolerance, length, and surface finish for stable production.
Custom Hex Bar Parameters
- Size Basis Across Flats (A/F), metric or inch sizes
- Tolerance Tight dimensional control, project-based tolerance options
- Finish Bright, smooth, scale-free cold drawn surface
- Processing Cutting, straightening, polishing, chamfering on request
Cold Drawn Carbon Steel Hex Bar
Cost-effective cold drawn hex bar material for high-volume hardware and general machining.
Standard hardware, pins, structural joints, and general mechanical parts where consistent A/F size, straightness, and clean surface finish help reduce secondary machining.
Cold Drawn Alloy Steel Hex Bar
Higher-strength alloy steel hex bars for demanding mechanical and fastener applications.
High-stress applications, automotive transmission components, and heavy-duty industrial fasteners requiring Quenching & Tempering (QT), improved strength, and reliable batch-to-batch consistency.
Stainless Steel Cold Drawn Hex Bar
Precision stainless hexagonal bars for corrosion-resistant components and clean working environments.
Corrosive environments, marine applications, food-grade machinery parts, valves, fittings, and precision components requiring a bright cold drawn hex bar surface.
Need a non-standard A/F size, special length, or project-specific tolerance? Send your drawing, material grade, tolerance requirement, and quantity. Our team will evaluate your custom size cold drawn hex steel bar requirement and recommend a practical production solution.
Request Material QuotePrimary Applications: Cold Drawn Hex Bar for Fastener Manufacturing
Because a hexagonal bar already provides the six flat sides necessary for wrench gripping, it is the most efficient raw material for specific industries. YaDa Metal supplies precision cold drawn hexagonal steel bar for buyers who need stable A/F dimensions, bright surfaces, and reliable machinability in repeated production.
Cold Drawn Hex Bar for Bolts & Cold Drawn Hex Steel Bar for Nuts
Our precise A/F Across Flats tolerances ensure that the final produced fasteners will interlock perfectly with standard tools and wrenches, eliminating the risk of slippage or stripping. For bolt, nut, stud, and threaded component manufacturers, cold drawn hex bar helps reduce secondary milling and improves finished-part consistency.
- Consistent hex profile for wrench-fit accuracy.
- Bright surface suitable for visible fastener outer faces.
- Stable straightness for CNC automatic bar feeding.
Precision Hexagonal Steel Bar for Hydraulic & Pneumatic Fittings
Connectors, valves, and couplings require high burst pressure resistance. Our cold drawn process significantly increases the yield strength of the steel, making YaDa precision hexagonal steel bar ideal for high-pressure hydraulic and pneumatic fluid-control systems.
- Stronger material performance for pressure-bearing fittings.
- Accurate hex shape for assembly and tightening operations.
- Custom grades and sizes based on fitting drawings.
Need cold drawn hex bar matched to your CNC line or fastener drawing?
Share your steel grade, A/F size, tolerance, straightness requirement, length, and annual quantity. YaDa Metal will evaluate the most efficient production route for your cold drawn hexagonal steel bar order.
Why Choose YaDa as Your Cold Drawn Hex Bar Supplier in China?
For fastener manufacturers, hydraulic fitting producers, and CNC machining workshops, a reliable cold drawn hex bar supplier must deliver more than steel shape. YaDa Metal focuses on tight A/F dimensional control, consistent mechanical properties, and factory-direct production support for long-term B2B procurement.
Tight Dimensional Control for Cold Drawn Hex Bar
We achieve highly controlled A/F tolerances such as h9, h10, and h11, helping reduce your machining allowances to almost zero. Stable across-flats dimensions help prevent CNC bar feeder jamming, wrench-fit problems, and unnecessary secondary milling.
- Controlled Across Flats A/F dimensions
- Excellent straightness for automatic lathes
- Bright, smooth surface for finished appearance
Factory Direct Precision Hexagonal Steel Bar Factory in China
As a direct precision hexagonal steel bar factory in China, YaDa Metal controls the complete in-house production flow from raw material preparation, annealing, phosphating and soaping, cold drawing, straightening, polishing, cutting, and packing.
- No middleman for bulk and repeat orders
- Custom sizes according to drawings
- Stable export packing and delivery planning
In-House Mechanical Testing for Cold Drawn Hexagonal Bars
Every batch is checked for tensile strength, yield strength, dimensional accuracy, straightness, and surface integrity. This helps guarantee batch-to-batch consistency for fastener manufacturing, hydraulic fittings, and precision CNC machining.
- Mechanical property inspection
- Surface and crack-risk checking
- Consistent quality for long production runs
Need custom cold drawn hex bar sizes, grades, or A/F tolerances?
Send us your material grade, across-flats size, tolerance, length, quantity, and application. Our team will evaluate your requirements and provide a practical factory-direct quotation.
Non-Standard Hex Bar Production
In-house die design for custom Across-Flats dimensions.
Custom Size Cold Drawn Hex Steel Bar Manufacturing Process
Can't find the exact standard size you need? No problem. YaDa excels in custom manufacturing. By designing our own tungsten carbide drawing dies in-house, we can produce non-standard custom size cold drawn hex steel bars to meet your proprietary product designs.
Provide us with your specific Across-Flats dimensions, length requirements such as 3 meters or 6 meters, material grade, and tolerance limits. Our engineers will evaluate your drawing and arrange a trial batch swiftly for CNC machining, fastener manufacturing, hydraulic fittings, and OEM mechanical components.
Drawing Review
We check A/F size, tolerance, straightness, steel grade, surface finish, and final application.
Carbide Die Design
Custom tungsten carbide drawing dies are prepared for stable hexagonal profile forming.
Precision Cold Drawing
Controlled cold drawing improves dimensional accuracy, bright surface quality, and mechanical strength.
Trial Batch Inspection
Each trial batch is checked for A/F tolerance, straightness, surface defects, and batch consistency.
FAQs About Cold Drawn Hexagonal Bars
These answers are prepared for fastener manufacturers, CNC machining shops, hydraulic fitting producers, and steel importers sourcing precision cold drawn hex bars from a factory-direct manufacturer in China.
Need a Custom Size Cold Drawn Hex Steel Bar?
Send us your Across Flats dimension, steel grade, tolerance, length, quantity, and end-processing requirements. Our team will review manufacturability and provide a practical quotation.
- A/F size and tolerance requirements
- Carbon steel, alloy steel, or stainless steel grade
- Straightness, surface finish, chamfering, and packaging needs
What is the difference between hot rolled and cold drawn hex bars?
Hot rolled hex bars normally have a rough, scaly surface and looser dimensional tolerances. A bright cold drawn hex bar is pulled through a precision die at room temperature, which gives it a smoother surface, more accurate Across Flats dimensions, better straightness, and increased mechanical strength. This makes cold drawn hexagonal steel bar more suitable for CNC machining, bolts, nuts, and precision fittings.
Can you supply cold drawn hex bars with chamfered ends?
Yes. To assist CNC automatic bar feeders and reduce loading problems, YaDa can provide precision chamfering or pointing on one or both ends of the hex bar. This is especially useful for long bars used in high-speed multi-spindle automatic lathes.
What A/F tolerance can YaDa control for precision cold drawn hex bars?
Tolerance depends on steel grade, A/F size, bar length, and final processing route. For many precision cold drawn steel bars, YaDa can control dimensional tolerance tightly, with capability reaching ±0.05mm under suitable production conditions. If you need h9, h10, h11, or a drawing-specific tolerance, please send the A/F dimension and application so our engineers can confirm the best process.
Is the surface of cold drawn hexagonal steel bar ready for final products?
In many fastener and fitting applications, yes. Cold drawing creates a smooth, bright, scale-free surface, so the six flats can often be used as the visible outer surface after cutting, drilling, tapping, or threading. This helps reduce secondary milling, machining allowance, tool wear, and material waste.
Which steel grades are available for cold drawn hex bar manufacturing?
YaDa manufactures cold drawn carbon steel hex bar, cold drawn alloy steel hex bar, and stainless steel cold drawn hex bar. Common grades include 1018, 1020, 1045/CK45, A36, S235, S355, 4140/SCM440, 5120, 4340, 20CrMnTi, 304, 316, and 17-4PH. GB, ASTM, and JIS grade equivalents can be discussed according to your purchase specification.
Can YaDa produce custom size cold drawn hex steel bars according to drawings?
Yes. YaDa is a factory-direct custom steel profile manufacturer with cold drawing, die preparation, straightening, cutting, polishing, and inspection capability in-house. We can evaluate non-standard A/F dimensions, special lengths, tight tolerances, and OEM drawing requirements for custom size cold drawn hex steel bars.
How does straightness affect CNC machining of cold drawn hex bars?
Poor straightness can cause vibration, bar feeder jamming, unstable cutting, dimensional deviation, and even tool breakage during high-speed CNC machining. YaDa controls straightness through cold drawing, straightening, and final inspection, helping customers improve cutting stability and reduce scrap rates.
What information should I provide to get an accurate cold drawn hex bar quotation?
Please provide steel grade, A/F size, tolerance, bar length, surface requirement, straightness requirement, quantity, packaging method, destination port, and any chamfering or cutting requirements. If the product is used for bolts, nuts, hydraulic fittings, or CNC turned parts, sharing the final application will help us recommend a more suitable manufacturing route.
How are cold drawn hexagonal bars packed for export shipment?
Export packing can be arranged according to bar size, length, destination, and customer requirement. Typical packing includes bundled bars with protective wrapping, anti-rust protection when required, steel straps, labels, and suitable loading for container transportation. The goal is to protect the bright surface and maintain straightness during long-distance shipment.
Get a Quote from a Reliable Cold Drawn Hexagonal Bar China Factory
Stop struggling with inconsistent raw materials that slow down your production line. Upgrade to YaDa's precision steel. Please share your material grade, size (A/F), required tolerance, length, and quantity. Our export sales team will provide a competitive quote within 24 hours.
- Steel grade
- Across Flats size
- Required tolerance
- Bar length
- Purchase quantity
Send Your Hex Bar RFQ
Talk with a fastener steel expert for precision cold drawn hex bars, custom A/F sizes, chamfered ends, and export packaging.
