Last updated at 10/06/2026 08:43:18
Post Base Tie - 140mm x 140mm
Delivery between Fri ā Sat $129
Simpson Strong-Tie Concealed Post Base Suits 140mm To 152mm Square Posts
Delivery $10
Simpson Strong-Tie CPT Concealed Post Base Tie ZMAX Galvanised 140mmx140mm at Bowens
30-day returns
originally posted on bunnings.com.au
Easy to use, sits low to ground and looks sleek ! highly recommend
originally posted on bunnings.com.au
Stirrups are Not pool fence compliant,Wobbles around and is not sturdy at all
originally posted on bunnings.com.au
I bought seven of these for a balcony railing. On two the pins fit the holes almost perfectly, on the other five the holes were about 0.8mm too big. The one with the holes the right size resulted in posts that worked perfectly: strong, no wobble. The other five resulted in posts that wobbled about. I spoke to Simpson and they claimed that they checked their stock and they're all loose, they're supposed to be that way. Which is garbage - I hate it when company employees lie like that. They're not all that way: two of mine weren't. I'm lucky, I have access to a machine workshop and made new 13.5mm pins (the size of the larger holes) from 316 stainless steel and drilled the posts to 13.5mm and they worked fine, too. The problem is that I now have zero trust in Simpson ...Ā MoreI bought seven of these for a balcony railing. On two the pins fit the holes almost perfectly, on the other five the holes were about 0.8mm too big. The one with the holes the right size resulted in posts that worked perfectly: strong, no wobble. The other five resulted in posts that wobbled about. I spoke to Simpson and they claimed that they checked their stock and they're all loose, they're supposed to be that way. Which is garbage - I hate it when company employees lie like that. They're not all that way: two of mine weren't. I'm lucky, I have access to a machine workshop and made new 13.5mm pins (the size of the larger holes) from 316 stainless steel and drilled the posts to 13.5mm and they worked fine, too. The problem is that I now have zero trust in Simpson Strong-Tie and won't use any of their products ever again, including nailing strips or anything else.
| Total Weight | 1.63kg |
| Adjustable Stirrup (Yes/No) | No |
Post Base Tie - 140mm x 140mm
Delivery between Fri ā Sat $129
Simpson Strong-Tie Concealed Post Base Suits 140mm To 152mm Square Posts
Delivery $10
Simpson Strong-Tie CPT Concealed Post Base Tie ZMAX Galvanised 140mmx140mm at Bowens
30-day returns
Easy to use, sits low to ground and looks sleek ! highly recommend
Stirrups are Not pool fence compliant,Wobbles around and is not sturdy at all
I bought seven of these for a balcony railing. On two the pins fit the holes almost perfectly, on the other five the holes were about 0.8mm too big. The one with the holes the right size resulted in posts that worked perfectly: strong, no wobble. The other five resulted in posts that wobbled about. I spoke to Simpson and they claimed that they checked their stock and they're all loose, they're supposed to be that way. Which is garbage - I hate it when company employees lie like that. They're not all that way: two of mine weren't. I'm lucky, I have access to a machine workshop and made new 13.5mm pins (the size of the larger holes) from 316 stainless steel and drilled the posts to 13.5mm and they worked fine, too. The problem is that I now have zero trust in Simpson ...Ā MoreI bought seven of these for a balcony railing. On two the pins fit the holes almost perfectly, on the other five the holes were about 0.8mm too big. The one with the holes the right size resulted in posts that worked perfectly: strong, no wobble. The other five resulted in posts that wobbled about. I spoke to Simpson and they claimed that they checked their stock and they're all loose, they're supposed to be that way. Which is garbage - I hate it when company employees lie like that. They're not all that way: two of mine weren't. I'm lucky, I have access to a machine workshop and made new 13.5mm pins (the size of the larger holes) from 316 stainless steel and drilled the posts to 13.5mm and they worked fine, too. The problem is that I now have zero trust in Simpson Strong-Tie and won't use any of their products ever again, including nailing strips or anything else.
I bought these strong post ties, not very impressed. The vertical plate is slot thicker than a circular saw cut, I had to do multiple runs, you then have to run well past the end of the plate. Cutting with a hand saw will not do it. Then you need to be confident the holes you pre drilled will align, then bang in the studs. One of post split while driving on the studs as they are quite tight. Overall, will be using the standard saddles next time and save my time and money.
Well priced, design and finish good. Does what it says.Easy order and pick up
| Total Weight | 1.63kg |
| Adjustable Stirrup (Yes/No) | No |
Simpson Strong-Tie Concealed Post Base Suits 140mm to 152mm Square Posts
The CPT Concealed Post Base provides a clean, concealed look while providing a 25mm standoff height above concrete to help reduce the potential for decay to timber, at the post end. Available in 90mm (Black or Stainless Steel), 115mm, 140mm, and 200m sizes, the CPT forms part of Simpson Strong-Tie concealed structural connector range, which combines structural strength with invisibility. Manufactured in heavier gauge carbon steel for a stronger connection, base 2.7mm, plate 3.5mm, finished with ZMAX Galvanised. The post support blade can be used as a template for location to drill dowel holes. Black powder coated base for a modern appearance. Tested and load-rated engineering data available. Suitable for Glulam and solid sawn timber. It can be installed with either mechanical or chemical anchors (dependent on engineering specifications). The 90 mm size is also available in 316 Stainless Steel for for more corrosive environments such as coastal areas. All pins and fasteners needed for installation are included. When Installing, use all specified fasteners. Post bases do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for nonābraced or nonātopāsupported installations. Anchorage Options, The holes in the CPT tabs are sized for 12mm diameter anchors, for castāināplace anchors, there should be 22mm (Ā±3mm) of anchor above the top surface of the concrete.
The CPT Concealed Post Base provides a clean, concealed look while providing a 25mm standoff height above concrete to help reduce the potential for decay to timber, at the post end. Available in 90mm (Black or Stainless Steel), 115mm, 140mm, and 200m sizes, the CPT forms part of Simpson Strong-Tie concealed structural connector range, which combines structural strength with invisibility. Manufactured in heavier gauge carbon steel for a stronger connection, base 2.7mm, plate 3.5mm, finished with ZMAX Galvanised. The post support blade can be used as a template for location to drill dowel holes. Black powder coated base for a modern appearance. Tested and load-rated engineering data available. Suitable for Glulam and solid sawn timber. It can be installed with either mechanical or chemical anchors (dependent on engineering specifications). The 90 mm size is also available in 316 Stainless Steel for for more corrosive environments such as coastal areas. All pins and fasteners needed for installation are included. When Installing, use all specified fasteners. Post bases do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for nonābraced or nonātopāsupported installations. Anchorage Options, The holes in the CPT tabs are sized for 12mm diameter anchors, for castāināplace anchors, there should be 22mm (Ā±3mm) of anchor above the top surface of the concrete.
The CPT Concealed Post Base provides a clean, concealed look while providing a 25mm standoff height above concrete to help reduce the potential for decay to timber, at the post end. Available in 90mm (Black or Stainless Steel), 115mm, 140mm, and 200m sizes, the CPT forms part of Simpson Strong-Tie concealed structural connector range, which combines structural strength with invisibility. Manufactured in heavier gauge carbon steel for a stronger connection, base 2.7mm, plate 3.5mm, finished with ZMAX Galvanised. The post support blade can be used as a template for location to drill dowel holes. Black powder coated base for a modern appearance. Tested and load-rated engineering data available. Suitable for Glulam and solid sawn timber. It can be installed with either mechanical or chemical anchors (dependent on engineering specifications). The 90 mm size is also available in 316 Stainless Steel for for more corrosive environments such as coastal areas. All pins and fasteners needed for installation are included. When Installing, use all specified fasteners. Post bases do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for nonābraced or nonātopāsupported installations. Anchorage Options, The holes in the CPT tabs are sized for 12mm diameter anchors, for castāināplace anchors, there should be 22mm (Ā±3mm) of anchor above the top surface of the concrete.
The CPT Concealed Post Base provides a clean, concealed look while providing a 25mm standoff height above concrete to help reduce the potential for decay to timber, at the post end. Available in 90mm (Black or Stainless Steel), 115mm, 140mm, and 200m sizes, the CPT forms part of Simpson Strong-Tie concealed structural connector range, which combines structural strength with invisibility. Manufactured in heavier gauge carbon steel for a stronger connection, base 2.7mm, plate 3.5mm, finished with ZMAX Galvanised. The post support blade can be used as a template for location to drill dowel holes. Black powder coated base for a modern appearance. Tested and load-rated engineering data available. Suitable for Glulam and solid sawn timber. It can be installed with either mechanical or chemical anchors (dependent on engineering specifications). The 90 mm size is also available in 316 Stainless Steel for for more corrosive environments such as coastal areas. All pins and fasteners needed for installation are included. When Installing, use all specified fasteners. Post bases do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for nonābraced or nonātopāsupported installations. Anchorage Options, The holes in the CPT tabs are sized for 12mm diameter anchors, for castāināplace anchors, there should be 22mm (Ā±3mm) of anchor above the top surface of the concrete.
in 3 offers
The lowest price for Simpson Strong-Tie Concealed Post Base Suits 140mm to 152mm Square Posts right now is $29.95 at Canterbury Timber & Building Supplies, compared across 3 retailers.
The all-time low was $19.45 on 21 July 2025 ā today's price is 54% above the lowest ever. It has been notably cheaper before ā worth setting a price alert.
Prices last updated 10 June 2026.
