Crossbar holder - 42.4 (AISI316)

The Strofix crossbar holder – 42.4 (AISI 316) is an AISI 316 stainless-steel railing component designed for Ø42.4 mm post tubes with a Ø12 mm crossbar bore. Supplied with a 22 mm body diameter, 20 mm height, satin finish, and screwing elements included. AISI 316 contains molybdenum, providing higher resistance to chlorides and salt air than AISI 304.

The Ø12 mm bore (d = 12 mm) accepts a Ø12 mm solid or hollow crossbar rod. The 22 mm body diameter (D) and 20 mm height (H) match the AISI 304 crossbar holder in the same category, allowing AISI 316 holders to be used alongside AISI 304 components where only specific positions require higher corrosion resistance. The Ø6.5 mm screw hole secures the holder to the Ø42.4 mm post tube. This SKU is supplied in a single configuration — there are no selectable crossbar diameter, finish, or grade options.

The satin finish provides a uniform appearance that matches other Strofix railing components in the same finish.

Use cases:

• Coastal balcony and terrace railing crossbar mounting where chloride resistance is required
• Seafront and harbour-side railing systems with Ø42.4 mm post tubes
• Pool fencing and wet-area railing crossbar infill
• High-humidity commercial installations such as aquatic centres and indoor pools
• Exterior railings in salt-air environments where AISI 304 is insufficient

FAQ:

What crossbar diameter does this holder accept?

The holder has a single Ø12 mm bore (d = 12 mm). It is designed for Ø12 mm solid or hollow crossbar rods. Unlike the AISI 304 crossbar holder (42.4), which offers four selectable crossbar diameters (Ø10/12/14/16), this AISI 316 version is supplied with Ø12 mm only.

Why choose AISI 316 over AISI 304?

AISI 316 contains molybdenum, which provides higher resistance to chlorides and salt air. Specify AISI 316 for coastal, pool, and high-humidity installations where AISI 304 may develop surface corrosion over time. For standard inland interior and exterior installations, the AISI 304 version is sufficient and more cost-effective.

What post tube diameter does this holder fit?

The holder is designed for Ø42.4 mm railing post tubes. This is fixed and is the standard post tube size in Strofix railing systems.

What are the body dimensions?

The holder body has a 22 mm outer diameter (D = 22 mm) and a 20 mm height (H = 20 mm). These dimensions match the AISI 304 crossbar holder (d = 12 variant), so both grades can be used interchangeably in the same railing system.

Are screwing elements included?

Yes. Screwing elements are included with the holder. The mounting screw passes through a Ø6.5 mm hole to secure the holder to the Ø42.4 mm post tube.

Is a polished finish available?

No. This AISI 316 SKU is supplied in satin finish only. The polished finish option is available on the AISI 304 crossbar holder (42.4) for the Ø12 mm variant.

About Crossbar Holders

A crossbar holder is a stainless-steel fitting that secures a horizontal rod or bar to a railing post, glass panel or flat surface, forming the connection between the infill rod and the structure it passes through. At intermediate posts the rod runs through the holder; at end posts it terminates in a blind hole (left or right hand); and on glass panels a dedicated glass-mount holder clamps the rod to the panel face.

Strofix supplies 12 crossbar holder products in several configurations: through-hole holders for Ø42.4 mm round pipe and flat-sided posts, left and right blind-hole bar holders for Ø42.4 mm and flat posts, connecting holders for intermediate positions, a vertical holder, and a glass-mount holder — in AISI 304 or AISI 316 stainless steel with satin or polished finishes, with holder heights of 20, 22 and 23 mm for Ø10 and Ø12 mm rod diameters.

The correct holder depends on post profile, rod diameter, position in the railing run and whether the rod terminates or passes through.