Z-Bar Splice Sign Mounting Bracket

Z-Bar Sign Mount Features

Package includes one Z-bar. Review the installation guidelines below to order the correct number of bars for your application.

Aluminum Z-Brackets are great for supporting signs in medium to high speed zones and on high wind areas. This Z-bar splice attaches signs to U-channel or Square posts. Available in six different sizes to fit multiple sign dimensions and shapes.

Mounting hardware to attach Z-bar splice to signs posts is sold separately. Use either our popular Bolting Set or our Tamper Resistant Hardware.

NY DOT specifications: Aluminum Z-Bars weighing 1.00 lb/ft and measuring 2⅜″ × 1¼″ × 3/16″ may be pre-punched with 5/16″ diameter holes at 1″ centers along the entire length.

The horizontal z bar length shall be a minimum of 1″ longer than the center to center distance between extreme mounting holes. Where posts are located at the end of horizontal z bar, the horizontal z bar shall extend beyond the side of the post a minimum of one ½″ and a maximum of 2″.

• Available in 6 different sizes.
• Pre-drilled Z-bars attached securely to signs.
• Supports signs in high wind areas.
• Z-Bar holes are 5/16″ and 7/16″ in diameter with a distance of 1″ from centers.
• Sign to Z-Bar mounting hardware is included.
• Bolting set to attach Z-bar to post is sold separately. Use either our popular Bolting Set or our Tamper Resistant Hardware.
• Weight:
  9″ Z-Bar: 0.88 lbs,
  13″ Z-Bar: 1.2 lbs,
  16″ Z-Bar: 1.4 lbs,
  19″ Z-Bar: 1.65 lbs,
  25″ Z-Bar: 2 lbs,
  31″ Z-Bar: 2.8 lbs.

Z-bar Hole Diameter

Z-bar is provided with two different hole sizes on each leg, 5/16″ holes attach Z-bar to sign and 7/16″ hole attaches Z-bar to post.

Installation Procedures

Z-Bar Splice on a U-Channel Post

NY DOT - Signs and Z-Bars configuration

The following hole configuration chart follows New York DOT requirements, however, it is only attributed to the Z-bar lenghts that are offered in this website. Holes size must be 3/8″ diameter.

Post and horizontal Z bar arrangements are shown for common blanks. These arrangements may be adjusted as necessary where a number of sign blanks are grouped in sign assemblies or where additional posts are required due to post capacity limitations.

For Rectangular Signs

Sign Size & Shape	Z-Bar Size & Quantity	Diagram	Hole configuration	Hardware Included
24 x 8" Rectangle	Two 19" Z-bars		Two 3/8" holes 18" apart horizontally (top and bottom) and 4" apart vertically.	1 set of bolting hardware per Z-bar.
24 x 12" Rectangle	Two 19" Z-bars		Two 3/8" holes 18" apart horizontally (top and bottom) and 6" apart vertically.	1 set of bolting hardware per Z-bar.
24 x 18" Rectangle	Two 19" Z-bars		Two 3/8" holes 18" apart horizontally (top and bottom) and 12" apart vertically.	1 set of bolting hardware per Z-bar.
24 x 30" Rectangle	Two 19" Z-bars		Two 3/8" holes 18" apart horizontally (top and bottom) and 24" apart vertically.	1 set of bolting hardware per Z-bar.
24 x 36" Rectangle	Two 19" Z-bars		Two 3/8" holes 18" apart horizontally (top and bottom) and 30" apart vertically.	1 set of bolting hardware per Z-bar.
30 x 24" Rectangle	Two 25" Z-bar		Two 3/8" holes 24" apart horizontally (top and bottom) and 18" apart vertically.	1 set of bolting hardware per Z-bar.
30 x 36" Rectangle	Two 25" Z-bar		Two 3/8" holes 24" apart horizontally (top and bottom) and 30" apart vertically.	1 set of bolting hardware per Z-bar.
36 x 12" Rectangle	Two 31" Z-bars		Three 3/8" holes 15" apart horizontally (top and bottom) and 6" apart vertically.	2 sets of bolting hardware per Z-bar.
36 x 18" Rectangle	Two 31" Z-bars		Three 3/8" holes 15" apart horizontally (top and bottom) and 12" apart vertically.	2 sets of bolting hardware per Z-bar.
36 x 24" Rectangle	Two 31" Z-bars		Three 3/8" holes 15" apart horizontally (top and bottom) and 18" apart vertically.	2 sets of bolting hardware per Z-bar.
36 x 30" Rectangle	Two 31" Z-bars		Three 3/8" holes 15" apart horizontally (top and bottom) and 24" apart vertically.	2 sets of bolting hardware per Z-bar.
36 x 48" Rectangle	Three 31" Z-bars		Three 3/8" holes 15" apart horizontally (top and bottom) and 21" apart vertically.	2 sets of bolting hardware per Z-bar.
12" wide Signs	9" Z-bars		For 12" wide signs, a 9" Z-bar is recommended. Z-bar configuration not applicable with NY DOT.	1 set of bolting hardware per Z-bar.
18" wide Signs	13" Z-bars		For 18" wide signs, a 13" Z-bar is recommended. Z-bar configuration not applicable with NY DOT.	1 set of bolting hardware per Z-bar.

Other Shapes

Sign Size & Shape	Z-bar Size & Quantity	Diagram	Hole configuration	Hardware Included
24" Square	Two 19" Z-bars		Two 3/8" holes 18" apart horizontally (top and bottom) and 18" apart vertically.	1 set of bolting hardware per Z-bar.
30" Square	Two 25" Z-bars		Two 3/8" holes 24" apart horizontally (top and bottom) and 24" apart vertically.	1 set of bolting hardware per Z-bar.
36" Square	Two 31" Z-bars		Two 3/8" holes 15" apart horizontally (top and bottom) and 30" apart vertically.	2 sets of bolting hardware per Z-bar.
24" Diamond	Two 13" Z-bars		Two 3/8" holes 12" apart horizontally (top and bottom) and 16" apart vertically.	1 set of bolting hardware per Z-bar.
30" Diamond	Two 16" Z-bars		Two 3/8" holes 15" apart horizontally (top and bottom) and 20" apart vertically.	1 set of bolting hardware per Z-bar.
24" Octagon	Two 13" Z-bars		Two 3/8" holes 13" apart horizontally (top and bottom) and 16" apart vertically.	1 set of bolting hardware per Z-bar.
30" Octagon	Two 16" Z-bars		Two 3/8" holes 15" apart horizontally (top and bottom) and 20" apart vertically.	1 set of bolting hardware per Z-bar.