The best lamp post cross arm depends on post fit, material, end design, and the weight of what you plan to hang. The Solus SCA-335BK is best for buyers who want an aluminum arm with a stated 25-pound capacity per end. The 16-inch steel options suit shoppers seeking a longer replacement arm, while the QWORK model highlights a 25-pound-per-end rating and screw-on ends. Check mounting dimensions before choosing any cross arm.
| Product | Best For | Key Detail |
|---|---|---|
| QWORK Steel Cross Arm | Rated hanging capacity | Up to 25 pounds per end |
| 16-Inch Steel Cross Arm | Buyers checking specific dimensions | 16.1-inch length; 0.75-inch mounting hole required |
| Solus SCA-335BK | Aluminum construction | 15 inches; up to 25 pounds per end |
| OOHYEE 16-Inch Cross Arm | Removable screw-on knobs | Steel construction and versatile hanging use |
| Awleynz 16-Inch Cross Bar | Outdoor decorations | States 25 pounds per end |
QWORK Sturdy Steel Cross Arm

Best for: Buyers who want a steel cross arm with a clearly stated load rating. QWORK lists support for up to 25 pounds on each end, making this option easier to compare when hanging items with known weights.
The arm is made from steel and has a black finish. Its screw interface is designed to secure the black ball ends. That feature may appeal to buyers who prefer ends that attach with a threaded connection rather than a fixed decorative cap.
Why it was selected: It combines a stated per-end capacity with a specific end-attachment design. Check before buying: The supplied product details do not state the mounting-hole diameter or total arm length, so confirm those dimensions against your lamp post.
16-Inch Steel Cross Arm With Measured Fit

Best for: Buyers who need listed dimensions to check compatibility. This black steel arm measures 16.1 inches overall, has a 0.75-inch rod diameter, and uses 1.2-inch end spheres. The product specifies that a 0.75-inch mounting hole is required.
Its described uses include hanging house number plaques, garden flags, potted plants, and bird feeders. The listing presents it as suitable for outdoor settings such as yards, gardens, streets, and parks. Steel construction is specified for outdoor use.
Why it was selected: Its length and required hole size are explicitly provided, which helps shoppers compare fit before ordering. Important limitation: It will not fit a post unless the mounting opening meets the listed 0.75-inch requirement. Compare measurements rather than relying on appearance alone.
Solus SCA-335BK Aluminum Cross Arm

Best for: Buyers who prefer aluminum and want a stated load capacity. The Solus SCA-335BK is a 15-inch cross arm with a listed capacity of up to 25 pounds on each end, or 50 pounds total.
Installation requires a 3/4-inch-diameter mounting hole. The product description says to remove either gold end cap, insert the cross arm through the post, and reattach the cap. It also describes the arm as weather resistant and maintenance free, with a durable finish intended to resist rust and chipping.
Why it was selected: The listing provides material, length, mounting-hole size, installation steps, and load information. Those details make it a useful comparison for buyers choosing between aluminum and steel. Check before buying: Its 15-inch length is shorter than the 16-inch steel models in this selection.
OOHYEE 16-Inch Cross Arm With Removable Knobs

Best for: Shoppers looking for a 16-inch steel replacement arm with screw-on ball ends. The product description says its black ball heads screw on for a tight fit and describes the arm as suitable for outdoor use.
This cross arm is presented as both a ladder rest and a hanger for house numbers, garden signs, plants, flags, and bird feeders. That range of suggested uses makes it a flexible option for an entryway or garden display.
Why it was selected: It pairs a specified 16-inch length with steel construction and removable screw-on knobs. Check before buying: The provided product details do not give a mounting-hole diameter or load limit. Confirm the post fit and intended hanging load before selecting it.
Awleynz 16-Inch Steel Lamp Post Cross Bar

Best for: Buyers who want a 16-inch steel bar for common outdoor decorations and a stated per-end load figure. The product says each end can bear up to 25 pounds and describes a screw interface that holds the black ball head in place.
Suggested uses include house numbers, potted plants, seasonal flags, signboards, bird feeders, and wind chimes. The listing also describes the cross arm as suitable for outdoor locations such as gardens, courtyards, streets, and parks.
Why it was selected: Its 16-inch size, steel material, screw-on ball ends, and stated 25-pound capacity per end make it a useful alternative to other steel models. Check before buying: The provided features do not specify the mounting-hole diameter, so verify that the arm can pass through your post.
Buying Guide: How To Choose A Lamp Post Cross Arm
What mounting size does your post require?
Start by measuring the opening in the lamp post and comparing it with the cross arm’s rod diameter or stated mounting-hole requirement. The 16.1-inch steel model specifies a 0.75-inch mounting hole, and Solus also requires a 3/4-inch hole. The other supplied product descriptions do not state a mounting diameter. Do not assume that arms with similar lengths will fit the same post.
Should you choose steel or aluminum?
Steel is specified for the QWORK, OOHYEE, and Awleynz arms, as well as the 16.1-inch model. Solus is aluminum and lists a durable, weather-resistant finish. Compare the material and finish details with your preference for the outdoor fixture. The listings do not provide a consistent, directly comparable test of long-term durability across all five products.
How much weight will you hang?
Match the stated rating to the load and how it will be distributed. QWORK, Solus, and Awleynz specify up to 25 pounds per end; Solus also states a 50-pound total capacity. Do not transfer one model’s rating to another. The supplied OOHYEE and 16.1-inch model details do not state a load capacity.
Do removable ends matter?
Screw-on or removable ball ends can affect how the arm is installed and how the decorative ends attach. QWORK and Awleynz describe screw interfaces; OOHYEE describes screw-on ball heads; Solus provides removable gold caps for insertion. Check the product’s installation description and the access available on your post.
Frequently Asked Questions
What is a lamp post cross arm used for?
A cross arm attaches across a lamp post and can serve as a ladder rest or a support for outdoor items such as flags, signs, plants, or bird feeders, depending on the product and its capacity.
Are all 16-inch cross arms the same size?
No. Length alone does not establish fit. Compare rod diameter, mounting-hole requirement, end dimensions, and the lamp post’s opening.
Which options list a 25-pound capacity per end?
QWORK, Solus, and Awleynz state a capacity of up to 25 pounds on each end. The other supplied product details do not give a load rating.
Can I hang a heavy planter from either end?
Check the selected model’s stated capacity and the planter’s loaded weight. Do not assume a product without a listed rating supports the same load as a rated model.
What should I measure before ordering?
Measure the post opening and compare it with the cross arm’s mounting requirements. Also check the available width and the intended load before choosing a replacement.