Hexagonal metal bar stock
Hex Bars & Rods
Hex bars are six-sided solid bars specified by material grade, across-flats dimension, length, tolerance and finish. Select the required material and delivery condition before placing an enquiry.
Piyush Steel India supplies material options for industrial bar requirements. Availability of a particular alloy in hexagonal form, size and condition should be confirmed against the drawing and applicable product standard.
At a glance
Hex Bar Quick Facts
Product overview
What Is a Hex Bar?
A hexagonal bar, also called a hex bar or hex rod, is a solid metal section with six flat sides. The faces make it convenient for manufacturing components requiring wrench engagement or a defined six-sided profile. Hex bar stock can be machined into fasteners, fittings, connectors and other precision parts.
The cross-sectional shape does not identify the material grade. Mechanical properties, corrosion resistance, heat treatment and dimensional acceptance depend on the alloy and the applicable material and product specifications.
Purchasing guidance
How to Specify Hex Bars & Rods
For an accurate quotation, specify both the material and the six-sided product dimensions. Do not use a round-bar diameter in place of an across-flats measurement.
Material choices
Hex Bar Material Options
Different alloy families can be considered according to corrosion resistance, strength, temperature and machining requirements. The links below lead to material category information, not guaranteed stock listings for hex bars.
- Stainless steel — material category; confirm hexagonal form and grade availability.
- Carbon steel — material category; confirm hexagonal form and grade availability.
- Alloy steel — material category; confirm hexagonal form and grade availability.
- Duplex stainless steel — material category; confirm hexagonal form and grade availability.
- Super duplex steel — material category; confirm hexagonal form and grade availability.
- Inconel / Incoloy — material category; confirm hexagonal form and grade availability.
- Monel — material category; confirm hexagonal form and grade availability.
- Hastelloy — material category; confirm hexagonal form and grade availability.
- Nickel — material category; confirm hexagonal form and grade availability.
- Titanium — material category; confirm hexagonal form and grade availability.
- Copper nickel — material category; confirm hexagonal form and grade availability.
- Beryllium copper — material category; confirm hexagonal form and grade availability.
- 253MA — material category; confirm hexagonal form and grade availability.
- AL6XN — material category; confirm hexagonal form and grade availability.
- Custom 450 — material category; confirm hexagonal form and grade availability.
- Jethete M152 — material category; confirm hexagonal form and grade availability.
For an alternative shape, review round bars, square bars or flat bars.
Technical information
Hex Bar Specifications
Requirements vary by alloy and manufacturing route. The table describes the information to confirm rather than representing one universal standard or stock range.
| Parameter | Specification guidance |
|---|---|
| Cross-section | Regular hexagon; specify across-flats dimension (AF) |
| Material / grade | Carbon steel, alloy steel, stainless steel or selected non-ferrous alloys as required |
| Applicable standard | Material-specific standard and edition; for example ASTM A276 where appropriate for stainless bars |
| Dimensions | AF size, length, straightness and required tolerances |
| Manufacturing condition | Hot-finished, cold-drawn or machined, as applicable and agreed |
| Surface | Mill finish, bright, ground, polished or other agreed finish |
| Documentation | Manufacturer's MTC, heat traceability and additional inspection as specified |
Hex Bar Dimensions: Across Flats vs Across Corners
| Measurement | Meaning |
|---|---|
| Across flats (AF) | Distance between two opposite parallel faces; the common ordering dimension for regular hex bars |
| Across corners (AC) | Distance between opposite corners; for a regular hexagon, approximately 1.155 × AF |
| Length | Overall bar length or cut-piece length as specified in the purchase order |
Actual acceptance tolerances must follow the relevant grade and product specification or the agreed drawing.
Industrial use
Applications of Hex Bars
Hexagonal bar stock is selected where a six-sided profile improves workholding or reduces machining steps. Typical applications include machined nuts and fasteners, hydraulic fittings, valve parts, instrument connections, couplings, adapters and general engineering components.
The material grade should be selected for the service environment. For example, corrosion-resistant grades may be needed for chemical processing, while other grades may be preferred for strength or machinability.
Pricing, Availability and Export Enquiries
Price and lead time depend on the grade, AF size, quantity, finish, required testing and destination. Include the applicable material specification, drawing or cut-length schedule, packing requirements and delivery terms when requesting an offer.
For related processes, see hot rolled bars, cold rolled bars and bright bars. These describe manufacturing or surface conditions and are not interchangeable with a hexagonal cross-section.
Frequently asked questions
Hex Bar FAQs
What is a hex bar?
A hex bar is a solid metal bar with a six-sided cross-section. It is often used as stock for machining components such as nuts, fittings and connectors.
How are hex bars measured?
Hex bars are normally specified by the distance across opposite parallel flats (AF), together with length and tolerance. Across-corners dimensions may also be relevant to machining or clearance.
What is the difference between a hex bar and a round bar?
A hex bar has six flat faces and can provide a gripping surface; a round bar has a circular cross-section. Both can be machined into finished parts.
Are hex bars available in stainless steel?
Stainless steel is among the material categories used for hex bars. The exact grade, across-flats size, finish and delivery condition must be confirmed for the order.
Which surface finishes can be specified?
Depending on grade and production route, finishes may include hot-finished, cold-drawn, peeled, ground or polished. Finish and tolerances should be specified separately.
What details are needed for a hex bar quotation?
Provide the material grade and standard, across-flats dimension, length, quantity, finish or condition, tolerance, inspection documents and delivery destination.