| WIWrought Iron Creations, INC. | Huntsville | TX | — | ◇ UNVERIFIED |
| WSW S Tyler Incorporated | Gastonia | NC | — | ◇ UNVERIFIED |
| WTW - Technology, INC. | Houston | TX | — | ◇ UNVERIFIED |
| WMWulfkrik Metals Processing, LLC | Beaver | PA | — | ◇ UNVERIFIED |
| WCWulf's Custom Welding, LLC | Springfield | NE | — | ◇ UNVERIFIED |
| WCWulf's Custom Welding, LLC | Springfield | NE | — | ◇ UNVERIFIED |
| WLWyle Lab Electronic Enclosures | El Segundo | CA | — | ◇ UNVERIFIED |
| WIWyman-gordon Investment Castings | Ogden | UT | — | ◇ UNVERIFIED |
| WFWyoming Fire Fabrication Inc/dba Downey Welding | Shoshoni | WY | — | ◇ UNVERIFIED |
| WMWyoming Machinery Company: in | Gillette | WY | — | ◇ UNVERIFIED |
| WPWythe Precision Machine | Max Meadows | VA | — | ◇ UNVERIFIED |
| WBWyzer Biosciences | Auburndale | MA | — | ◇ UNVERIFIED |
| XTXactra Technologies, Inc. | Rochester | NY | — | ◇ UNVERIFIED |
| XFX Factor Machine & Design INC | Salem | OR | — | ◇ UNVERIFIED |
| XCXli Corporation | Rochester | NY | — | ◇ UNVERIFIED |
| XPXl Pattern Shop, INC. | Orrville | OH | — | ◇ UNVERIFIED |
| XX-mil,inc. | Mount Orab | OH | — | ◇ UNVERIFIED |
| XMXtreme Machine INC. | Millville | UT | — | ◇ UNVERIFIED |
| XTXxpress Transportation INC. | Oswego | NY | — | ◇ UNVERIFIED |
| YLY2 LLC | Hillsboro | OR | — | ◇ UNVERIFIED |
| YLY2 LLC | Pendleton | OR | — | ◇ UNVERIFIED |
| YMYachtfish Marine | Seattle | WA | — | ◇ UNVERIFIED |
| YVYadkin Valley Mechanical, INC. | Rural Hall | NC | — | ◇ UNVERIFIED |
| YMYamaha Marine Precision Propellers INC | Indianapolis | IN | — | ◇ UNVERIFIED |
| YFYates Foil USA INC | Bordentown | NJ | — | ◇ UNVERIFIED |
| YTYellowstone Track Systems, LLC | Sheridan | WY | — | ◇ UNVERIFIED |
| YTYellowstone Track Systems, LLC | Sheridan | WY | — | ◇ UNVERIFIED |
| YTYellowstone Track Systems, LLC | Sheridan | WY | — | ◇ UNVERIFIED |
| YOYe Olde Machine Shoppe CO. | Orem | UT | — | ◇ UNVERIFIED |
| YMYesterday's Machine Shop | Schenectady | NY | — | ◇ UNVERIFIED |
| YSYH Sheet Metal Co | Oakland | CA | — | ◇ UNVERIFIED |
| YAYoung and Daughters | Corinth | MS | — | ◇ UNVERIFIED |
| YCYoung Cimtech LLC | New Albany | IN | — | ◇ UNVERIFIED |
| YCYoung CORP Nordick Div | Woodinville | WA | — | ◇ UNVERIFIED |
| YAYoungers and Sons Manufacturing CO INC | Viola | KS | — | ◇ UNVERIFIED |
| YMYoung Machine CO. | Monticello | UT | — | ◇ UNVERIFIED |
| YIYulista Integrated Solutions, LLC. Gateway | Huntsville | AL | — | ◇ UNVERIFIED |
| ZMZala Machine Co., INC. | Hillsborough | NJ | — | ◇ UNVERIFIED |
| ZMZankowski Machine | Hazleton | PA | — | ◇ UNVERIFIED |
| ZTZebra Test Facility | Hyattsville | MD | — | ◇ UNVERIFIED |
| ZHZedwick Holdings, LLC | Owensboro | KY | — | ◇ UNVERIFIED |
| ZAZephyr Aircraft Engines INC | Zephyrhills | FL | — | ◇ UNVERIFIED |
| ZWZephyr Wind Services | Hutchinson | MN | — | ◇ UNVERIFIED |
| ZRZero Runout LLC | Kaukauna | WI | — | ◇ UNVERIFIED |
 Zero Tolerance, LLC | Fraser | MI | — | ◇ UNVERIFIED |
| ZTZeta Tool, L.l.c. | Troy | MI | — | ◇ UNVERIFIED |
| ZLZf Lemforder CORP | Lapeer | MI | — | ◇ UNVERIFIED |
| ZGZia-tech Gear Manufacturing INC. | Pittsburgh | PA | — | ◇ UNVERIFIED |
| ZIZip-jack Industries | Elmsford | NY | — | ◇ UNVERIFIED |
| ZMZ Metal Works, INC. | Stuart | FL | — | ◇ UNVERIFIED |
| ZMZ Metal Works, INC. | Stuart | FL | — | ◇ UNVERIFIED |
| ZMZ&m Machine, LLC | Willoughby | OH | — | ◇ UNVERIFIED |
| ZMZtech Mfg, LLC | Tempe | AZ | — | ◇ UNVERIFIED |
| ZIZurn Ind Llc/cast Metals Div | Erie | PA | — | ◇ UNVERIFIED |
| ZAZybek Advanced Products | Boulder | CO | — | ◇ UNVERIFIED |
