LEGO part 27938: Technic Worm Gear Short

Specifications
| Reference | 27938 |
|---|---|
| Category | Technic Gears |
| Material | ABS plastic |
| Colours | 1 |
| Sets | 23 |
| Listed pieces | 40 |
| First appearance | 2017 |
| Latest appearance | 2025 |
| Element (Dark Bluish Gray) | 6170153 |
LEGO part 27938, Technic Worm Gear Short, belongs to the Technic Gears category. It exists in 1 colours and appears in 23 sets of our database, from 2017 to 2025, for a total of 40 listed pieces. Its most common colour is Dark Bluish Gray.
Number 27938 identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in dark bluish gray, it is 6170153.
Part 27938 through the years
The oldest set in our database that contains part 27938 is 42062 Container Yard, released in 2017 in the Technic theme. It is still in use: the most recent set featuring it, 10360 Shuttle Carrier Aircraft, dates from 2025.
Its peak year is 2021, with 5 sets containing it. The set with the most copies is 75313 AT-AT: 8 copies, against an average of 1.7 per set.
The part is closely tied to the Technic theme: 74% of the sets that contain it belong to it. With 23 sets, it ranks no. 2,524 of 2,731 parts in our database and no. 44 of 46 in the Technic Gears category.
Sets containing part 27938, by period
| Period | Sets | |
|---|---|---|
| 2017 | 3 | |
| 2018 | 4 | |
| 2019 | 2 | |
| 2020 | 2 | |
| 2021 | 5 | |
| 2022 | 2 | |
| 2023 | 2 | |
| 2024 | 1 | |
| 2025 | 2 |
Where to buy part 27938
Setopedia shows no prices: they vary by colour, condition and seller. Amazon links are affiliate links.
Sets that include part 27938
Sets ranked by popularity that include at least one part 27938, in any colour.
42128Heavy Duty Tow Truck2021 · 2,017 piecesView the set
42144Material Handler2022 · 835 piecesView the set
42131Cat D11 Bulldozer2021 · 3,854 piecesView the set- 10318Concorde2023 · 2,083 piecesView the set
60351Rocket Launch Center2022 · 1,010 piecesView the set
42098Car Transporter2019 · 2,493 piecesView the set
75313 AT-AT2021 · 6,785 pieces
42158 NASA Mars Rover Perseverance2023 · 1,132 pieces
3D42116 Skid Steer Loader2021 · 139 pieces
3D42105 Catamaran2020 · 405 pieces
42180 Mars Crew Exploration Rover2024 · 1,599 pieces
3D42113 Bell Boeing V-22 Osprey2020 · 1,636 pieces
42097 Compact Crawler Crane2019 · 920 pieces
3D42062 Container Yard2017 · 631 pieces
3D42060 Roadwork Crew2017 · 365 pieces
3D42081 Volvo Concept Wheel Loader ZEUX2018 · 1,167 pieces
3D42071 Dozer Compactor2018 · 171 pieces
3D42079 Heavy Duty Forklift2018 · 592 pieces
3D42061 Telehandler2017 · 260 pieces
10360 Shuttle Carrier Aircraft2025 · 2,417 pieces
42201 Deep-Sea Research Submarine2025 · 413 pieces
45400 BricQ Motion Prime2021 · 568 pieces
45806 INTO ORBIT Challenge Kit2018 · 1,910 pieces
Often found with part 27938
Parts that share the most sets with part 27938, based on set inventories.
More parts in the Technic Gears category
3648a Technic Gear 24 Tooth [Old Style - Three axle holes]29 sets
76244 Technic Gear 24 Tooth Clutch with Dark Bluish Gray Center28 sets
57519 Technic Tread Sprocket Wheel Large 10 Tooth27 sets
6542a Technic Gear 16 Tooth with Clutch [Toothed]26 sets
50163 Technic Turntable Large Type 2, 24/56 Tooth with Black Outside Gear Section [Complete Assembly]25 sets
6542b Technic Gear 16 Tooth with Clutch [Smooth]24 sets
57520pr0001 Technic Tread Sprocket Wheel Small with Glatorian Game Print21 sets
81346 Technic Gear 20 Tooth with Clutch on Both Sides20 sets
Frequently asked questions
How many LEGO sets include part 27938?
Part 27938 (Technic Worm Gear Short) appears in 23 sets listed on Setopedia, from 2017 to 2025, in any colour.
Which LEGO set contains the most copies of part 27938?
Set 75313 AT-AT, released in 2021, contains 8 copies, the highest count in our database. On average, a set containing part 27938 has 1.7.
Which colours does LEGO part 27938 come in?
1 colours are listed for part 27938. The most common is Dark Bluish Gray, found in 23 sets.
What is the element ID of part 27938 in dark bluish gray?
In dark bluish gray, part 27938 has element ID 6170153. Number 27938 is the mould number, the same for every colour.
Is LEGO part 27938 still used in recent sets?
Yes: it appears in sets released in 2025, such as 10360 Shuttle Carrier Aircraft.
Where can I buy LEGO part 27938 individually?
Single parts 27938 can be ordered on Pick a Brick (lego.com) in colours currently produced, or on BrickLink for older colours. The part is also included in the sets listed on this page.

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