Aqua Terra Backyard
Pentair 070428Z T-Bolt Replacement Stainless Steel for Clamp Ring, 1/4-20 x 3-1/2"
Pentair 070428Z T-Bolt Replacement Stainless Steel for Clamp Ring, 1/4-20 x 3-1/2"
Pentair 070428Z T-Bolt S.S. Purex Replacement
The Pentair 070428Z T-Bolt S.S. Purex is a stainless steel replacement clamp bolt used on select Pentair, Purex, and older stainless D.E. filter clamp assemblies. This part is commonly used when the original clamp T-bolt is stripped, corroded, bent, difficult to tighten, or no longer threads properly into the clamp nut hardware.
If your filter clamp band is still in usable condition but the bolt side of the tightening mechanism is worn out, the 070428Z can help restore the clamp hardware without replacing the entire clamp assembly.
Why Buy the Pentair 070428Z T-Bolt?
- Stainless steel replacement T-bolt for select compatible filter clamp assemblies
- Helps repair worn clamp hardware when the original bolt is stripped, rusted, or damaged
- Useful for older Purex/Pentair stainless filter setups where complete clamp assemblies may be difficult to source
- Pairs with compatible clamp spring and nut hardware when rebuilding the tightening side of the clamp
- OEM-style repair part for pool service professionals and homeowners maintaining older filter equipment
Product Details
| Brand | Pentair |
| Manufacturer Part Number | 070428Z |
| Product Type | Filter Clamp T-Bolt / Clamp Bolt |
| Material | Stainless Steel |
| Application | Select Pentair / Purex stainless D.E. filter clamp assemblies |
What Does the 070428Z T-Bolt Do?
The T-bolt is the threaded bolt that passes through the filter clamp hardware and allows the clamp nut and spring assembly to tighten the clamp band around the filter tank. When the T-bolt threads become damaged, the clamp may be difficult to tighten, may not tension evenly, or may no longer secure the filter properly.
Replacing the T-bolt can be the right repair when the clamp band itself is still in good condition, but the bolt side of the clamp hardware is worn out.
ATB Compatibility Note
Older stainless filter clamps can vary by model, age, and previous clamp upgrades. Before ordering, compare this T-bolt to your existing clamp bolt and confirm that your clamp uses the matching spring and nut hardware. If your clamp band is bent, cracked, stretched, or badly corroded, the full clamp assembly should be inspected before reusing the filter.
When Should This T-Bolt Be Replaced?
- The original T-bolt threads are stripped or damaged
- The brass clamp nut no longer threads on smoothly
- The bolt is bent, rusted, or difficult to remove
- The filter clamp is hard to tighten or loosen during service
- You are rebuilding the clamp hardware on a compatible older stainless D.E. filter
Common Repair Pairing
On compatible upgraded clamp setups, the Pentair 070428Z T-Bolt may be used along with the correct spring, washer, and clamp nut hardware. For example, if your existing clamp uses the Pentair 181010-style spring hardware and the T-bolt is also damaged, both the spring hardware and T-bolt may need to be replaced to complete the repair.
Important: The 070428Z is the T-bolt only. It does not replace the clamp band, spring kit, washers, or brass clamp nut unless those parts are included separately in your order.
Frequently Asked Questions
What is the Pentair 070428Z used for?
The Pentair 070428Z is a stainless steel T-bolt used on select Pentair and Purex filter clamp assemblies. It is part of the tightening hardware that helps secure the clamp band around the filter tank.
Does this include the spring and brass nut?
No. This listing is for the T-bolt only. If your spring, washers, or brass clamp nut are also worn out, those parts must be purchased separately or as part of the correct compatible clamp hardware kit.
Will this fit every Pentair filter clamp?
No. This T-bolt is made for select compatible clamp assemblies. Always compare it to your existing bolt and verify your filter model, clamp style, and hardware setup before ordering.
Can I use hardware store bolts instead?
No. Filter clamp hardware is used on a pressurized vessel and should not be replaced with generic hardware. Always use the correct replacement clamp hardware designed for your filter setup.
Order Pentair 070428Z from Aqua Terra Backyard
At Aqua Terra Backyard, we help pool owners and service professionals keep older equipment running with the right replacement parts. The Pentair 070428Z T-Bolt S.S. Purex is a practical repair part for compatible stainless D.E. filter clamp assemblies when the original T-bolt is worn, stripped, or no longer tightening correctly.
Need help confirming fitment? Compare your existing clamp bolt, filter model, and clamp hardware before ordering. If you are unsure, contact Aqua Terra Backyard with photos of your filter clamp and model label so we can help verify the correct repair path.
