NAICS 336120
Heavy Duty Truck Manufacturing
RampedUp holds 5,585,004 professional profiles classified to 2022 NAICS 336120 as of the build — 2.3% of all profiles carrying a NAICS classification. Of those, 2,791,830 carry a professional email address and 597,040 carry a mobile number. Ranked #9 of 370 codes.
What NAICS 336120 covers
This industry comprises establishments primarily engaged in (1) manufacturing heavy duty truck chassis and assembling complete heavy duty trucks, buses, heavy duty motor homes, and other special purpose heavy duty motor vehicles for highway use or (2) manufacturing heavy duty truck chassis only. Cross-References. Establishments primarily engaged in--
Official 2022 NAICS definition. Sector 33 — Manufacturing. Mapped in the RampedUp taxonomy to Motor Vehicle Manufacturing.
What the records carry
Field coverage for NAICS 336120, August 2026 build.
| Field on the record | Records | Share of 336120 | Share across all NAICS |
|---|---|---|---|
| Professional email | 2,791,830 | 50.0% | 50.8% |
| Personal email | 729,750 | 13.1% | 16.0% |
| Phone (any) | 5,219,792 | 93.5% | 89.3% |
| Mobile number | 597,040 | 10.7% | 13.4% |
| Primary contact record | 3,369,325 | 60.3% | 63.9% |
| All five present on one record | 182,354 | 3.3% | 4.5% |
Counts come from the RampedUp August 2026 build. RampedUp's crosswalk maps each 6-digit 2022 NAICS code to exactly one industry in its own taxonomy, so this is that industry's population viewed under the NAICS classification — not a separate tally.
Comparable NAICS codes
The codes ranked either side of 336120 by profile count.
| # | Code | Title | Profiles | Professional email |
|---|---|---|---|---|
| 7 | 541618 | Other Management Consulting Services | 6,091,540 | 3,010,525 |
| 8 | 923110 | Administration of Education Programs | 5,674,273 | 2,361,205 |
| 10 | 524298 | All Other Insurance Related Activities | 5,144,546 | 3,176,858 |
| 11 | 722310 | Food Service Contractors | 4,831,423 | 2,181,824 |
Questions about NAICS 336120
What is NAICS code 336120?
336120 — Heavy Duty Truck Manufacturing. This industry comprises establishments primarily engaged in (1) manufacturing heavy duty truck chassis and assembling complete heavy duty trucks, buses, heavy duty motor homes, and other special purpose heavy duty motor vehicles for highway use or (2) manufacturing heavy duty truck chassis only. Cross-References. Establishments primarily engaged in--
How many contacts does RampedUp have for NAICS 336120?
5,585,004 professional profiles as of the August 2026 build, which is 2.3% of all profiles carrying a NAICS classification. Counts come from the RampedUp August 2026 build. RampedUp's crosswalk maps each 6-digit 2022 NAICS code to exactly one industry in its own taxonomy, so this is that industry's population viewed under the NAICS classification — not a separate tally.
What contact details are available for NAICS 336120?
2,791,830 records carry a professional email address (50.0%), 729,750 a personal email address, 5,219,792 a phone number and 597,040 a mobile number.
Need this cross-filtered?
Exact counts for NAICS 336120 on its own. For this code combined with a title level, company size or a required field, ask and we will run it against the live file.