333613: Mechanical Power Transmission Equipment Manufacturing
The code for makers of gears, speed reducers, couplings, clutches, plain bearings, and sprockets that move power from a motor to a load.
NAICS 333613 in numbers
Obligated by fiscal year
Who buys
Who won
Where the work is done
Award size bands (count)
Set-aside mix (count)
Coming up for recompete
| Ends | Incumbent | Buyer | Last value |
|---|---|---|---|
| Oct 2, 2026 | PERCIPIENT MANUFACTURING, LLC | DLA LAND AND MARITIME | $45.0K |
| Oct 2, 2026 | U.S.A. SPARES INC. | DLA LAND AND MARITIME | $13.2K |
| Jan 20, 2027 | MILLENNIUM AEROSPACE AND DEFENSE | DLA LAND AND MARITIME | $10.9K |
| Jan 22, 2027 | MILLENNIUM AEROSPACE AND DEFENSE | DLA LAND AND MARITIME | $10.9K |
Open right now under NAICS 333613
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What this code covers
Census defines 333613 as plants that make mechanical power transmission equipment other than the kinds built for motor vehicles and aircraft. The definition lists plain bearings, clutches other than vehicle and electromagnetic control types, couplings, joints, and drive chains. Industry usage adds gears, speed reducers, sprockets, pulleys, and shafts.
For defense that means shipboard reduction gear components and couplings, winch and hoist drives, antenna and turret drive parts, gearboxes for ground support and test equipment, and plain bearings and bushings bought by stock number. Ball and roller bearings sit in 332991. Vehicle and aircraft drivetrain parts have their own codes, though notices do not always follow that line.
What federal buyers typically ask for
DLA Land and Maritime posts most of the volume: plain bearings, bushings, gears, sprockets, couplings, and shafts by national stock number, often on long-term contracts. Navy supply activities and shipyards post reduction gear and coupling components for ship overhauls. Depots post gearbox and drive parts for repair lines.
Gears carry a quality grade and inspection requirement with charts, and the drawing usually names the material, heat treat, case depth, and hardness. Expect material and heat treat certs, magnetic particle inspection on steel gears, first article for a new source, and a certificate of conformance. Plain bearings cite a material specification for the bronze, steel, or composite liner. Steel and nickel alloy content brings the DFARS specialty metals clause. Critical ship and aviation drive parts often carry an approved source list. Drawings are commonly export controlled.
Small business set-asides are common on bushings, sprockets, and standard couplings. Critical gearing tends to go unrestricted to approved sources.
PSC codes that often pair with this NAICS
| PSC | Name | Why it matters |
|---|---|---|
| 3020 | Gears, Pulleys, Sprockets, and Transmission Chain | The core class for gearing and sprockets. |
| 3010 | Torque Converters and Speed Changers | Speed reducers and gearboxes. |
| 3040 | Miscellaneous Power Transmission Equipment | Couplings, clutches, and shafts. |
| 3120 | Bearings, Plain, Unmounted | Sleeve bearings and bushings. |
| 3130 | Bearings, Mounted | Pillow blocks and flanged units. |
| J030 | Maintenance and repair of mechanical power transmission equipment | Gearbox overhaul services. |
Group 30 is power transmission and group 31 is bearings. Watch both.
Before you bid
Check the gear quality grade and the inspection it requires. A grade that calls for charted inspection on equipment you do not own means an outside lab on every lot, and that has to be in your price.
Related guides
- For specialty suppliersHow LastAwarded fits a gear shop.
- Award historyWho won each stock number last.
- Recompete radarLong-term contracts coming due.
See who was last awarded in your NAICS
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