Answering your search for reliable 316 stainless steel hex bars, this guide highlights practical picks for different sizes and use cases. The top picks emphasize high corrosion resistance, especially in marine or corrosive environments, and are best for machinists, fabricators, and DIYers working with fasteners, frames, brackets, or custom hardware. Use this overview to match a bar to your project length, hex size, and handling needs. The short buying table below helps you compare key specs at a glance.
| Product | Across Flats | Length | Material | Best For |
|---|---|---|---|---|
| 316 Hex Bar (OnlineMetals) 5/8″ x 12″ | 5/8″ | 12″ | 316 Stainless Steel | Small parts and machine setups with tight spaces |
| 316 Hex Bar (OnlineMetals) 5/8″ x 36″ | 5/8″ | 36″ | 316 Stainless Steel | Longer fixtures and intermediate components |
| 316 Hex Bar (OnlineMetals) 1-1/8″ x 48″ | 1-1/8″ | 48″ | 316 Stainless Steel | Heavy-duty brackets and fastener supports |
| 316 Hex Bar (OnlineMetals) 1″ x 48″ | 1″ | 48″ | 316 Stainless Steel | Standard-size machine parts and prototypes |
| Feelers Hex Bar 13mm (304 Stainless) | 13mm | 250mm | 304 Stainless Steel | Alternative if 316 is not essential |
316 Stainless Steel Hex Bar, 5/8″ x 12″ (Online Metals)
Features: 316 stainless steel with high strength and excellent corrosion resistance, suitable for marine or highly corrosive environments. Across flats: 5/8″. Length: 12″. Temper: annealed. Best for compact assemblies and small fixtures where corrosion resistance is critical.
Why selected: This size is ideal for small-scale fabrications and hobby projects that demand durable, corrosion-resistant hex stock in a compact length. Caution: Shorter length limits component size and may require more joints or splicing in longer builds.
316 Stainless Steel Hex Bar, 5/8″ x 36″ (Online Metals)
Features: 316 stainless steel offering high strength and corrosion resistance in marine or highly corrosive environments. Across flats: 5/8″. Length: 36″. Temper: annealed.
Why selected: The longer 36″ length is better for mid-scale projects and fixtures, reducing the need for frequent joining. Caution: Longer stock requires adequate storage space and handling power.
316 Stainless Steel Hex Bar, 1-1/8″ x 48″ (Online Metals)
Features: 316 stainless steel with high strength and excellent corrosion resistance, including in marine or extremely corrosive environments. Across flats: 1-1/8″. Length: 48″. Temper: annealed.
Why selected: The 1-1/8″ hex size is suited for larger fasteners and robust structural components. Caution: Heavier stock requires stronger equipment for machining and handling.
316 Stainless Steel Hex Bar, 1″ x 48″ (Online Metals)
Features: 316 stainless steel, high strength and great corrosion resistance for harsh environments. Across flats: 1″. Length: 48″. Annealed.
Why selected: This is a versatile mid-to-large hex size, common for moderate-duty machined parts and custom fixtures. Caution: Stock length may be more than needed for small projects, which can affect cost efficiency.
Feelers Hex Bar, 13mm (304 Stainless) 250mm
Features: 13mm across flats, 250mm length, precision ground, 304 stainless steel. Best for affordable, non-316 applications that still require corrosion resistance and good machinability.
Why selected: Included as a practical alternative when 316 is not strictly necessary or for educational projects. Limitation: Not the same corrosion resistance as 316-grade stock, which may matter in marine or highly aggressive environments.
Buying Guide: Key Considerations for 316 Stainless Steel Hex Bar
- Material grade and environment: 316 stainless steel offers excellent corrosion resistance, especially in salty or acidic environments. Choose 316 for marine hardware, outdoor fixtures, and chemical handling components.
- Across flats size: Select the hex size based on the fastener or nut you intend to use, plus the machining tolerance you can achieve. Common sizes include 5/8″ and 1″ or larger for heavy-duty parts.
- Stock length: Longer bars reduce the number of joints but require more storage space and stronger tooling. Shorter bars are easier to handle but may necessitate more cutting and joining.
- Annealed vs tempered: Annealed stock is easier to machine and form, but may deform under high loads. If you plan bending or intricate shaping, consider the balance between formability and strength.
- Machinability and finish: Most 316 hex bars arrive annealed with a mill finish. If you need a smoother surface for cosmetic parts or precise tolerances, plan for finishing processes like grinding or polishing.
- Availability and length options: Suppliers like Online Metals offer multiple lengths for similar hex sizes. If your project requires a very specific length, compare options to minimize waste.
Frequently Asked Questions
- What is the advantage of 316 stainless steel for hex bars?
It provides high strength and superior corrosion resistance, especially in marine and chemical environments. - Which hex bar size is best for small, precise components?
The 5/8″ across flats options are ideal for compact assemblies, with 12″ or 36″ lengths depending on your build. - Can I use 304 stainless steel instead of 316?
304 offers good corrosion resistance but is not as resistant as 316 in chlorinated or saline environments. Use 304 only when 316 is not required. - Do I need finishing after purchase?
If you need a smooth surface for precision machining, plan on additional grinding or polishing beyond the mill finish. - What should I consider when choosing length?
Balance the number of parts per bar with storage constraints and the feasibility of cutting, welding, or joining pieces in your shop. - Is annealed stock harder to machine than tempered stock?
Annealed stock is easier to machine and shape, but may need post-machining work to achieve the final hardness for certain applications.