Brands H
- H-B Instruments
- H. G. Geiger
- H.K. Porter
- HAIMER
- HALDER
- Hallowell
- HALSEY TAYLOR
- Ham-let
- Hamilton
- HandM
- HandR Manufacturing
- Handy Rule
- Hanita
- Hankison
- Hanna Instruments
- Hanser Gardner
- Hansford
- Hanson
- Hargrave
- Harig
- Harley-Davidson
- Harrington Hoists Inc
- Harris Products
- Harris Welco
- Harrison
- Harvel Plastics
- Harvey's
- Hastings
- Haviland
- Hawg Air Vac
- Hawkeye
- HeadlineIt!
- Healer Products
- Heat Trak
- Heath/Zenith
- Heatstar
- Heck Industries
- Hedland
- Heimann
- Hein Warner
- Heinrich
- Heli-Coil
- Helly Hansen
- HERCULINER
- Heritage Cutlery
- Hermes
- Hertel
- Hexacon Electronics
- HexArmor
- Hi-Tech
- Hi-Tech Duravent
- Hi-Temp
- High Quality
- Hilman
- HLF Distributing
- Hobart Welding Products
- Hodell
- Hoffman
- Hoffman Speciality
- Holex
- Hollaender
- Holo-Krome
- Home Safeguard
- Hon
- Honeywell
- Hoover
- Hotcoat
- Hotwatt
- Hougen
- Hougen/Ogura
- Howard Leight
- HSI
- HSM of America
- HTC
- Hubbell
- Hubbell Killark
- Hubbell Lighting
- Hubbell Wiring Device-Kellems
- Hubbell Workplace
- HUCK
- Huco
- Hudson Extrusions
- Huot
- Husky
- Hyde Tools
- Hydro-Quick
- Hydrosol
- Hypro