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SUS304 M4PANHEAD PHILIPS SCREW
Manufacturer Resources
Product Specs
- Product Group:
- Washroom/Bath Accessories
- Product Subgroup:
- Parts and Accessories
- Product Type:
- philips screw
- Parts and Accessories Type:
- Fastener
- Department:
- Plumbing
TOTO THP4391 – Frequently Asked Questions
1) What is TOTO part THP4391?
THP4391 is a TOTO replacement fastener, an M4 pan head Phillips screw in SUS304 stainless steel. It is a service part for TOTO washroom and bath fixtures, ordered by the TOTO part number rather than by a generic screw size.
2) Is the TOTO THP4391 screw stainless steel, and will it hold up in a wet washroom?
It is SUS304 stainless, the standard 18/8 austenitic grade used for plumbing fasteners because of its corrosion resistance in constantly wet and humid environments. That makes it appropriate for bath and washroom fixture service work where a plated carbon steel screw would rust.
3) Can I substitute a hardware store M4 screw for the TOTO THP4391?
The head style and thread are an M4 pan head Phillips, but TOTO sells this as a specific service part under THP4391 and the length and head diameter are matched to the fixture it came out of. If the original is damaged or lost, ordering the TOTO part number is the way to be sure the screw seats correctly rather than matching by thread size alone.
4) Does the TOTO THP4391 fastener come in different finishes or sizes?
No. THP4391 is a single-configuration TOTO part, sold one way in SUS304 stainless with an M4 pan head Phillips drive. There are no alternate lengths or finish options to specify when ordering.
How fast can I get the TOTO THP4391 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the TOTO THP4391 come with a warranty?
Absolutely. The TOTO THP4391 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the TOTO THP4391?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the TOTO THP4391 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.