UNSPSC 23153418: Custom assembly fixtures or tooling

One-off devices built specifically for a particular production or assembly task

UNSPSC 23153418 Custom assembly fixtures or tooling is a Commodity code that covers custom-assembled mechanical equipment for municipal infrastructure, including water treatment control systems like flow controllers, butterfly valves, and adapter plates designed to fit existing equipment footprints and operational requirements. State and local governments procuring under this code buy specialized replacement assemblies for potable water treatment plants—equipment that must meet industry standards (AWWA, ASTM, NSF), match legacy systems' dimensional and actuator compatibility constraints, and be factory-tested to precise performance tolerances. The recent solicitation activity shows municipal utilities as the primary issuing bodies, with the City of Lubbock, Texas, as the repeat buyer in the sample block. Vendors supplying under the code must deliver fully assembled, tested units ready for installation, complete with technical documentation; the municipality typically handles site installation and labor.

Geographic activity is limited in the recent record to Texas, with the City of Lubbock posting two synchronized ITB notices (posted May 12 and May 27, 2026, both due May 27, 2026) for identical replacement water treatment equipment: ITB 26-19653-YB for a 16-inch venturi-type flow controller with 0–144 inches water column range and AWWA C504-compliant butterfly valve assembly for the North Water Treatment Plant. Both solicitations required factory assembly and testing to 0.5 percent flow-rate accuracy, cast iron body construction to ASTM A536 Grade 65-45-12 with Type 316 stainless steel throat liners, and compliance with existing EIM electric actuator mounting plates; equipment had to fit within 46.5 inches and include printed and digital operation manuals. The City offered a local-vendor price preference (within five percent of lowest non-resident bid for contracts under $500,000) and reserved the right to extend awards to Frenship Independent School District, Lubbock County, Lubbock Independent School District, and Texas Tech University through interlocal purchasing agreements. No budget or award value was disclosed.