333921 — Elevator and Moving Stairway Manufacturing
Description
This U.S. industry comprises establishments primarily engaged in manufacturing elevators and moving stairways (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Illustrative Examples
- Automobile lifts (i.e., garage-type, service station) manufacturing
- Escalators manufacturing
- Moving walkways manufacturing
- Passenger and freight elevators manufacturing
Exclusions & Cross-References
- Establishments primarily engaged in manufacturing commercial conveyor systems and equipment are classified in
- U.S. Industry 333922, Conveyor and Conveying Equipment Manufacturing.
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3534 - Elevators and Moving Stairways (via SIC1987:3534→NAICS1997:333921→2002:333921→2007:333921→2012:333921→2017:333921→2022:333921)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC 3960 — Freight Elevators
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 333921 valid in 2022? ▾
Yes, 333921 is a valid 6-digit 2022 NAICS national industry code representing 'Elevator and Moving Stairway Manufacturing' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 333921? ▾
The Small Business Administration (SBA) has established a small business size standard of 1,000 employees for NAICS code 333921 (Elevator and Moving Stairway Manufacturing), calculated based on employees.
What is the legacy SIC equivalent for NAICS 333921? ▾
According to official Census Bureau concordance tables, NAICS code 333921 (Elevator and Moving Stairway Manufacturing) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 3534 - Elevators and Moving Stairways.
Related Pages & Tools
Further regulatory reference links for NAICS code 333921:
- Sector 31-33 Directory Hub — List of related industries in the Manufacturing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 333921 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Elevator and Moving Stairway Manufacturing).
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.