Description
x3/16 Inch 6061-T6 Aluminum Round Bar, 4–6mm Solid Rod
This collection covers 3/16 inch 6061 aluminum round bar and its matching metric sizes: straight, solid rod in 4mm, 5mm, and 6mm, all heat treated to the T6 temper. It is the step up from micro rod — large enough to act as a real dowel, fastener blank, or small shaft, still small enough for compact mechanisms and fine assembly work.
Every length is true solid 6061 aluminum rod — not wire, not tube — cut to straight lengths and ready for turning, threading, drilling, and anodizing. Choose the diameter that matches your drawing and order stock lengths or custom-cut aluminum bar stock from RapidKeen.
Diameters4mm, 5mm, 6mm solid round, plus 3/16 inch fractional size
Alloy & Temper6061-T6, solution heat treated and artificially aged
FormStraight solid round rod, not flexible wire or tube
LengthStraight stock lengths or cut to your custom length
Available Diameters in This Collection
- 4mm 6061-T6 aluminum round bar — slender fastener blanks, contact pins, and fine linkages
- 5mm 6061-T6 aluminum round bar — small shafts, hinge pins, and electronic hardware
- 6mm 6061-T6 aluminum round bar — the most-used size here, for dowels, standoffs, and small axles
- 3/16 inch 6061-T6 aluminum round bar — the US fractional size for imperial drawings and hardware
Need the next standard fractional size? The dedicated 1/4 inch 6061-T6 aluminum round bar page covers that diameter separately.
Why This Size Range Gets Ordered Constantly
Four to six millimeters is where a thin 6061 rod becomes a functional mechanical part. Unlike micro rod, 3/16 inch 6061 aluminum round bar has enough cross section to carry shear loads as a dowel or hinge pin, enough material to cut small external threads, and enough stiffness to stay straight as a standoff or small axle. The T6 temper keeps the part rigid and fatigue-resistant, while 6061's machining behavior stays clean and predictable on Swiss-type lathes, small CNC mills, and bench-top machines. That combination makes this range a favorite of fastener makers, electronics assemblers, and instrument builders.
Common Applications
Dowel & alignment pinsStandoffs & spacersBolt & screw blanksHinge pinsLinkages & pushrodsConnector pinsSmall appliance shaftsGuide & locator pinsRC & model partsInstrument hardware
What These Rods Are Used For
- Dowel and alignment pins that locate jigs, molds, and bolted assemblies
- Standoffs, spacers, and support posts in electronics and small enclosures
- Bolt, screw, and threaded-stud blanks turned and threaded from solid
- Hinge pins, cotter-style pins, and pivot rods for doors, lids, and levers
- Small linkages, control rods, and actuator pushrods
- Connector and contact-pin stock for electrical and test equipment
- Small axles in appliances, toys, printers, and precision instruments
Material Behavior at This Size
6061-T6 combines magnesium and silicon for strength with strong atmospheric and moisture corrosion resistance, so small pins and standoffs hold up inside outdoor equipment and marine-adjacent devices. It turns and files cleanly with small tooling, taps and die-threads without cracking, and anodizes to an even finish for color-coded or cosmetic hardware. Straight lengths of this 3/16 inch aluminum bar stock are packed to stay straight in transit, and a fine-tooth blade keeps cut ends square when you part them in-house.
Ordering & Cut Length
Choose 4mm, 5mm, 6mm, or 3/16 inch, then enter the straight length you need. This 6061 aluminum round bar ships as single short pieces for prototypes and repairs, or in quantity for production runs of pins and fasteners. Ordering one longer rod and parting it yourself is the economical way to produce large batches of identical small pins.
Quick Questions
3/16 inch or 1/4 inch? Stay at 3/16 inch (4–6mm) for compact pins and standoffs; move up to 1/4 inch when the part sees real shear load or needs larger threads.
Can these rods be threaded? Yes. 6061-T6 at 4–6mm has enough material for small external threads and rolled or cut fastener blanks.
Is this wire or solid rod? Solid straight T6 rod — rigid enough for pins and axles, not soft spooled wire.
Can it be anodized? Yes, 6061-T6 anodizes evenly for colored or wear-resistant small hardware.
Shipping & Lead Time
In-stock, standard 3/16 inch 6061-T6 aluminum round bar and 4–6mm rod are prepared and shipped within 1–5 business days.
Custom-cut or processed orders require extra time based on processing complexity; the exact lead time depends on the size and quantity ordered.
After shipment, delivery to US addresses typically takes 7–15 days, and a tracking number is provided as soon as the order leaves our warehouse.
For dowel pins, standoffs, and small fastener blanks, the 3/16 inch 6061 aluminum round bar collection in 4–6mm delivers straight, rigid 6061-T6 solid rod — cut to length and ready for precision small parts.
Shipping & Return
xReturns Policy
You may return items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
- Choosing a selection results in a full page refresh.