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  • Construction Fasteners
    • Simpson Joist Hangers, Straps & Connectors
    • Carriage Bolts - 18-8SS & 316SS
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    • Washers & Nuts 18-8SS & 316SS
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Post Bases & Caps - Stainless Steel
Simpson ABU66 Post Base
Simpson Stainless Steel Post Cap
Simpson Stainless Steel Post Base
Simpson Stainless Steel Post Cap
Simpson Stainless Steel 4 x 4 Dual Post Base / Cap

Post Bases
& Caps

Review star icon Review star icon Review star icon Review star icon Review star icon 3 reviews

Type 316 Stainless Steel


  • Fabricated from AISI Type 316 Stainless Stee/ for the ultimate in corrosion resistance
  • ABU post bases are adjustable with 1" standoff for the post to help prevent end rot and are designed for maximum uplift performance.
  • The BC series are dual purpose post cap / post base for light cap or base connections.
  • AC/ACE post caps are used in pairs. Specially designed so there is no need for rights and lefts
  • Made in the USA
  • For your convenience, Simpson Strong-Tie Stainless Steel Connectors are sold with or without the recommended Stainless Steel Nails


Collated Connector Nails
Simpson Strong-Tie® Post Bases & Post Caps

Type 316 Stainless Steel - Salt Water Safe
  • Description
  • Code
  • Nails Supplied
  • Price
  • Qty
  •  
  • 4 x 4 Simpson ABU Post Base 316SS
    4 x 4
    Post Base
    No Nails
  • ABU44SS
  • none
  • ABU44SS
  • 1+  $99.00/piece
    6+  $96.00/piece

4 x 4 Simpson ABU Post Base 316SS

4 x 4 Simpson ABU Post Base 316SS

ABU Series Standoff Post Bases
Type 316 Stainless Steel for the ultimate in corrosion resistance
Provides 1" stand-off height above concrete floors
Can be installed on existing slab
Reduces potential for decay at post & column ends
Provides the highest uplift capacity.
ABU series should always be specified where wind uplift is a factor
Supplied with 3-1/2" x 8 gauge type 316 stainless steel nails
Use with 5/8" stainless steel wedge anchors or other approved 5/8" diameter anchors in stainless steel. (sold separately)
Made in USA
Approved for use in ACQ lumber

  • With Nails
  • ABU44SSK
  • 3-1/2"
  • ABU44SSK
  • 1+  $102.40/piece
    6+  $99.30/piece

4 x 4 Simpson ABU Post Base Kit + Nails 316SS

4 x 4 Simpson ABU Post Base Kit + Nails 316SS

ABU Series Standoff Post Bases
Type 316 Stainless Steel for the ultimate in corrosion resistance
Provides 1" stand-off height above concrete floors
Can be installed on existing slab
Reduces potential for decay at post & column ends
Provides the highest uplift capacity.
ABU series should always be specified where wind uplift is a factor
Supplied with 3-1/2" x 8 gauge type 316 stainless steel nails
Use with 5/8" stainless steel wedge anchors or other approved 5/8" diameter anchors in stainless steel. (sold separately)
Made in USA
Approved for use in ACQ lumber


  • Description
  • Code
  • Nails Supplied
  • Price
  • Qty
  •  
  • 6 x 6 Simpson ABU Post Base 316SS
    6 x 6
    Post Base
    No Nails
  • ABU66SS
  • none
  • ABU66SS
  • 1+  $165.00/piece
    6+  $160.00/piece

6 x 6 Simpson ABU Post Base 316SS

6 x 6 Simpson ABU Post Base 316SS

ABU Series Standoff Post Bases
Type 316 Stainless Steel for the ultimate in corrosion resistance
Provides 1" stand-off height above concrete floors
Can be installed on existing slab
Reduces potential for decay at post & column ends
Provides the highest uplift capacity.
ABU series should always be specified where wind uplift is a factor
Supplied with 3-1/2" x 8 gauge type 316 stainless steel nails
Use with 5/8" stainless steel wedge anchors or other approved 5/8" diameter anchors in stainless steel. (sold separately)
Made in USA
Approved for use in ACQ lumber

  • With Nails
  • ABU66SSK
  • 3-1/2"
  • ABU66SSK
  • 1+  $168.40/piece
    6+  $163.30/piece

6 x 6 Simpson ABU Post Base Kit + Nails 316SS

6 x 6 Simpson ABU Post Base Kit + Nails 316SS

ABU Series Standoff Post Bases
Type 316 Stainless Steel for the ultimate in corrosion resistance
Provides 1" stand-off height above concrete floors
Can be installed on existing slab
Reduces potential for decay at post & column ends
Provides the highest uplift capacity.
ABU series should always be specified where wind uplift is a factor
Supplied with 3-1/2" x 8 gauge type 316 stainless steel nails
Use with 5/8" stainless steel wedge anchors or other approved 5/8" diameter anchors in stainless steel. (sold separately)
Made in USA
Approved for use in ACQ lumber


  • Description
  • Code
  • Nails Supplied
  • Price
  • Qty
  •  
  • 8 x 8 Simpson ABU Post Base 316SS
    8 x 8
    Post Base
    No Nails
  • ABU88SS
  • none
  • ABU88SS
  • 1+  $544.90/piece
    4+  $523.00/piece

8 x 8 Simpson ABU Post Base 316SS

8 x 8 Simpson ABU Post Base 316SS

ABU Series Standoff Post Bases
Type 316 Stainless Steel for the ultimate in corrosion resistance
Provides 1" stand-off height above concrete floors
Can be installed on existing slab
Reduces potential for decay at post & column ends
Provides the highest uplift capacity.
ABU series should always be specified where wind uplift is a factor
Supplied with 3-1/2" x 8 gauge type 316 stainless steel nails
Use with 5/8" stainless steel wedge anchors or other approved 5/8" diameter anchors in stainless steel. (sold separately)
Made in USA
Approved for use in ACQ lumber

  • With Nails
  • ABU88SSK
  • 3-1/2"
  • ABU88SSK
  • 1+  $550.25/piece
    4+  $528.20/piece

8 x 8 Simpson ABU Post Base + Nails 316SS

8 x 8 Simpson ABU Post Base + Nails 316SS

ABU Series Standoff Post Bases
Type 316 Stainless Steel for the ultimate in corrosion resistance
Provides 1" stand-off height above concrete floors
Can be installed on existing slab
Reduces potential for decay at post & column ends
Provides the highest uplift capacity.
ABU series should always be specified where wind uplift is a factor
Supplied with 3-1/2" x 8 gauge type 316 stainless steel nails
Use with 5/8" stainless steel wedge anchors or other approved 5/8" diameter anchors in stainless steel. (sold separately)
Made in USA
Approved for use in ACQ lumber


  • Description
  • Code
  • Nails Supplied
  • Price
  • Qty
  •  
  • Simpson 4x4 Dual Post Base/Cap  316SS
    4 x 4
    Dual Post Base/Cap
    No Nails
  • BC4SS
  • none
  • BC4SS
  • 1+  $54.00/piece
    40+  $51.80/piece

Simpson 4x4 Dual Post Base/Cap 316SS

Simpson 4x4 Dual Post Base/Cap  316SS

BC4SS Post Cap/Base
Type 316 Stainless Steel for the ultimate in corrosion resistance
18 Gauge
Simpson Strong-Tie® BC4SS allows for the connection of (2) 2Xs to a 4X post
The BC series offers dual purpose post cap/base for light cap or base connections
Supplied with 3-1/2" x 8 gauge type 316 stainless steel nails
Caution! Post bases do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for installations that are not top supported such as fences or unbraced carports
Note: Large pilot holes are for manufacturing purposes only. DO NOT use for installation of bolts!
Approved for use in ACQ lumber

  • With Nails
  • BC4SSK
  • 3-1/2"
  • BC4SSK
  • 1+  $58.05/piece
    40+  $55.70/piece

Simpson 4x4 Dual Post Base/Cap + Nails 316SS

Simpson 4x4 Dual Post Base/Cap + Nails 316SS


  • Description
  • Code
  • Nails Supplied
  • Price
  • Qty
  •  
  • Simpson 4 x 4 Half Base 316SS
    4 x 4
    Half Base
    Special Order** No Nails
  • BC40SS
  • none
  • BC40SS
  • 1+  $37.80/piece
    50+  $36.35/piece

Simpson 4 x 4 Half Base 316SS

Simpson 4 x 4 Half Base 316SS

BC40SS Half Post Base
Type 316 Stainless Steel for the ultimate in corrosion resistance
18 Gauge
Made in USA
Dimensions: W 3-9/16", L 3-1/4", H 2-1/4"
Supplied with 3-1/2" 8 gauge type 316 stainless steel nails
Caution! Not recommended for installations that are not top supported
Note: Large pilot holes are for manufacturing purposes only. DO NOT use for installation of bolts!
Approved for use in ACQ lumber

  • Special Order** With Nails
  • BC40SSK
  • 3-1/2"
  • BC40SSK
  • 1+  $41.20/piece
    50+  $39.60/piece

4 x 4 Simpson Half Base with Nails 316SS

4 x 4 Simpson Half Base with Nails 316SS

BC40SS Half Post Base
Type 316 Stainless Steel for the ultimate in corrosion resistance
18 Gauge
Made in USA
Dimensions: W 3-9/16", L 3-1/4", H 2-1/4"
Supplied with 3-1/2" 8 gauge type 316 stainless steel nails
Caution! Not recommended for installations that are not top supported
Note: Large pilot holes are for manufacturing purposes only. DO NOT use for installation of bolts!
Approved for use in ACQ lumber


  • Description
  • Code
  • Nails Supplied
  • Price
  • Qty
  •  
  • 4 x 4 Simpson Post End Cap (pair L&R) 316SS
    4 x 4
    Post End Cap (pair)
    No Nails
  • ACE4SS
  • none
  • ACE4SS
  • 1+  $40.70/pr
    20+  $39.05/pr

4 x 4 Simpson Post End Cap (pair L&R) 316SS

4 x 4 Simpson Post End Cap (pair L&R) 316SS

AC/ACE Series Post Caps
Type 316 Stainless Steel for the ultimate in corrosion resistance
Two caps needed for each post
Sold in pairs
18 Gauge
Supplied with 3-1/2" x 8 gauge type 316 stainless steel nails
Made in USA
Approved for use in ACQ lumber

  • With Nails
  • ACE4SSK
  • 3-1/2"
  • ACE4SSK
  • 1+  $45.90/pr
    20+  $44.10/pr

4 x 4 Simpson Post End cap (pair L&R) + Nails 316SS

4 x 4 Simpson Post End cap (pair L&R) + Nails 316SS

AC/ACE Series Post Caps
Type 316 Stainless Steel for the ultimate in corrosion resistance
Two caps needed for each post
Sold in pairs
18 Gauge
Supplied with 3-1/2" x 8 gauge type 316 stainless steel nails
Made in USA
Approved for use in ACQ lumber


  • Description
  • Code
  • Nails Supplied
  • Price
  • Qty
  •  
  • 4 x 4 Simpson Post Cap (pair) 316SS
    4 x 4
    Post Cap (pair)
    No Nails
  • AC4SS
  • none
  • AC4SS
  • 1+  $57.75/pr
    10+  $55.50/pr

4 x 4 Simpson Post Cap (pair) 316SS

4 x 4 Simpson Post Cap (pair) 316SS

AC/ACE Series Post Caps
Type 316 Stainless Steel for the ultimate in corrosion resistance
Two caps needed for each post
Sold in pairs
18 Gauge
Supplied with 3-1/2" x 8 gauge type 316 stainless steel nails
Made in USA
Approved for use in ACQ lumber

  • With Nails
  • AC4SSK
  • 3-1/2"
  • AC4SSK
  • 1+  $67.30/pr
    10+  $64.70/pr

4 x 4 Simpson Post Cap (pair) + Nails 316SS

4 x 4 Simpson Post Cap (pair) + Nails 316SS

AC/ACE Series Post Caps
Type 316 Stainless Steel for the ultimate in corrosion resistance
Two caps needed for each post
Sold in pairs
18 Gauge
Supplied with 3-1/2" x 8 gauge type 316 stainless steel nails
Made in USA
Approved for use in ACQ lumber


  • Description
  • Code
  • Nails Supplied
  • Price
  • Qty
  •  
  • 6 x 6 Simpson Post Cap (pair) 316SS
    6 x 6
    Post Cap (pair)
    No Nails
  • AC6SS
  • none
  • AC6SS
  • 1+  $85.10/pr
    10+  $82.00/pr

6 x 6 Simpson Post Cap (pair) 316SS

6 x 6 Simpson Post Cap (pair) 316SS

AC/ACE Series Post Caps
Type 316 Stainless Steel for the ultimate in corrosion resistance
Two caps needed for each post
Sold in pairs
18 Gauge
Supplied with 3-1/2" x 8 gauge type 316 stainless steel nails
Made in USA
Approved for use in ACQ lumber

  • With Nails
  • AC6SSK
  • 3-1/2"
  • AC6SSK
  • 1+  $94.70/pr
    10+  $91.20/pr

6 x 6 Simpson Post Cap (pair) + Nails 316SS

6 x 6 Simpson Post Cap (pair) + Nails 316SS

AC/ACE Series Post Caps
Type 316 Stainless Steel for the ultimate in corrosion resistance
Two caps needed for each post
Sold in pairs
18 Gauge
Supplied with 3-1/2" x 8 gauge type 316 stainless steel nails
Made in USA
Approved for use in ACQ lumber


  • Description
  • Code
  • Nails Supplied
  • Price
  • Qty
  •  
  • Simpson LCE4SS Post Cap (pair) 316SS
    LCE4SS Post Cap (pair)
    No Nails
  • LCE4SS
  • none
  • LCE4SS
  • 1+  $58.20/pr
    20+  $55.90/pr

Simpson LCE4SS Post Cap (pair) 316SS

Simpson LCE4SS Post Cap (pair) 316SS

LCE Series Post Caps
Type 316 Stainless Steel for the ultimate in corrosion resistance
LCE4's universal design provides high capacity while eliminating the need for rights & lefts
For use with 4X or 6X lumber
Sold in pairs
20 Gauge
Supplied with 3-1/2" x 8ga type 316 stainless steel nails
Made in USA
Approved for use in ACQ lumber

  • With Nails
  • LCE4SSK
  • 3-1/2"
  • LCE4SSK
  • 1+  $66.40/pr
    20+  $63.75/pr

Simpson LCE4SS post cap + nails (pair) 316SS

Simpson LCE4SS post cap + nails (pair) 316SS

LCE Series Post Caps
Type 316 Stainless Steel for the ultimate in corrosion resistance
LCE4's universal design provides high capacity while eliminating the need for rights & lefts
For use with 4X or 6X lumber
Sold in pairs
20 Gauge
Supplied with 3-1/2" x 8ga type 316 stainless steel nails
Made in USA
Approved for use in ACQ lumber

  • Additional Information
  • Videos
  • Q&A
CA Residents: Prop 65 Warning

Fast and Easy Install of Post Bases with the Titen HD

SUGGESTED PRODUCTS

  • Titen HD® Heavy-Duty Screw Anchor Stainless Steel 316SS
    Titen HD® Heavy-Duty Screw Anchor Stainless Steel 316SS
    $3.50–$19.10
  • Full Round Head Connector Nails - 34°
    Full Round Head Connector Nails - 34°
    $164.15–$316.95
  • Joist Hanger Nails
    Joist Hanger Nails
    $21.45–$359.40
  • LUS Face Mount Joist Hangers - Stainless Steel
    LUS Face Mount Joist Hangers - Stainless Steel
    $10.80–$31.45

Reviews

Write a review

Mechanical technician at Kennedy Space Center
Jan 21, 2019  |  By Jack Gardner
Review star icon Review star icon Review star icon Review star icon Review star icon
Very satisfied with the hardware. I'm replacing all of my post bases that were installed twenty years ago at my house and are completely rusted out. No use for galvanized material in Florida.


Two Piece Post Caps
Apr 30, 2021  |  By David StLouis
Review star icon Review star icon Review star icon Review star icon Review star icon
These are hard to find and will be excellent for the tops of 4X6 (nominal 3-1/2 X 5-1/2) posts being replaced that under 3-1/2 wide inch beams. There appears to be no one-piece brackets for this type of installation. And the stainless steel will hold up to the coastal weather.


post base
Oct 5, 2023  |  By Gordon
Review star icon Review star icon Review star icon Review star icon Review star icon
Simpson products speak for themselves. Manasquan service was excellent as always.

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