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The LARSEN SUPPLY CO., INC. XS-552P is a brass faucet bibb screw used to secure faucet bibb washers in compression-style faucets and valves. Sized at 0.5 inches in length with an 8-32 thread designation, this screw provides the holding force needed to keep a bibb washer seated against the valve seat. It ships bagged in a package quantity of 10, making it a practical bench stock item for plumbers servicing residential and light commercial faucets. The S-6 classification corresponds to a standard slotted-head bibb screw profile common across many compression faucet assemblies.
This screw is used during routine faucet repair work, specifically when replacing bibb washers to stop dripping at compression faucets, hose bibbs, and sillcocks. Licensed plumbers and experienced DIYers stock these as part of a standard faucet repair kit. The bagged 10-count format supports service truck inventory and shop stock, reducing the need to source individual fasteners per job.
Designed as an OEM-style replacement bibb screw for compression-style faucets, hose bibbs, and sillcocks that use a 0.5 inch, 8-32 threaded bibb screw to retain the seat washer.
Installation is performed by licensed plumbers or qualified service technicians. Shut off the water supply and relieve line pressure before disassembling the faucet stem. Remove the old bibb screw and washer using a flathead screwdriver, replace both components, and reassemble in reverse order. Follow applicable IPC and local plumbing code requirements for faucet repair work.
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