Setobrick

LEGO part 6538b: Technic Axle Connector Ridged [with x Hole x Orientation]

Technic Connectors20 colours378 sets

LEGO part LEGO part 6538b: Technic Axle Connector Ridged [with x Hole x Orientation]

Specifications

Reference6538b
CategoryTechnic Connectors
MaterialABS plastic
Colours20
Sets378
Listed pieces2,194
First appearance1995
Latest appearance2014
Element (Black)4113805 · 4107083
Most common colourBlack
Main themesTechnic, Bionicle, Racers
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 6538b, Technic Axle Connector Ridged [with x Hole x Orientation], belongs to the Technic Connectors category. It exists in 20 colours and appears in 378 sets of our database, from 1995 to 2014, for a total of 2,194 listed pieces. Its most common colour is Black.

Number 6538b identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in black, it is 4113805.

Part 6538b through the years

The oldest set in our database that contains part 6538b is 8460 Pneumatic Crane Truck / Mobile Crane, released in 1995 in the Technic theme. No set in our database uses it after 2014, the year of 42025 Cargo Plane. To get it today, look for older sets or buy it second-hand.

Its peak year is 2006, with 53 sets containing it. The set with the most copies is 8289 Fire Truck: 59 copies, against an average of 5.8 per set.

It is spread across several themes, led by Technic (36%), Bionicle (11%) and Racers (7%). With 378 sets, it ranks no. 445 of 2,731 parts in our database and no. 18 of 74 in the Technic Connectors category.

Sets containing part 6538b, by period

PeriodSets
1995-199969
2000-2009289
2010-201420

Colours of part 6538b

2 colours appear in only one set: pearl sand blue (8012 Super Battle Droid) and pearl very light gray (8010 Darth Vader). One of its colours is transparent: trans-red.

Colour (element ID)SetsPiecesExample sets
Black4113805 · 41070831195421014382856210
Light Gray4113804 · 4100408116536848071638448
Light Bluish Gray421154352322828582757659
Tan4207456 · 4140453337010240804342009
Dark Bluish Gray6538199 · 4210672321141017976626212
Red412518928161844883868274
Yellow414050722781014378948653
Dark Gray41414261779450284668002
White4113803 · 410040714868480101348461
Blue4113807 · 41078021441846197488435
Trans-Red41636251251621177847257
Pearl Light Gray4177445 · 41772581031448197618623
Lime4265703 · 4154499822769172988935
Green4234660 · 4113806519847984468780
Dark Turquoise4112932416848284508509
Reddish Brown4211314313726088778875
Orange4252469 · 414032438976185378516
Brown4188921 · 41414252280027416
Pearl Sand Blue4172043128012
Pearl Very Light Gray4177082 · 4169194118010

Where to buy part 6538b

Setopedia shows no prices: they vary by colour, condition and seller. Amazon links are affiliate links.

Search part 6538b on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 6538b

Sets ranked by popularity that include at least one part 6538b, in any colour.

Related parts

Often found with part 6538b

Parts that share the most sets with part 6538b, based on set inventories.

More parts in the Technic Connectors category

All parts in the Technic Connectors category

Frequently asked questions

How many LEGO sets include part 6538b?

Part 6538b (Technic Axle Connector Ridged [with x Hole x Orientation]) appears in 378 sets listed on Setopedia, from 1995 to 2014, in any colour.

Which LEGO set contains the most copies of part 6538b?

Set 8289 Fire Truck, released in 2006, contains 59 copies, the highest count in our database. On average, a set containing part 6538b has 5.8.

Which colours does LEGO part 6538b come in?

20 colours are listed for part 6538b. The most common is Black, found in 119 sets.

What is the rarest colour of part 6538b?

According to our inventories, it is pearl very light gray, found in only 1 set (8010 Darth Vader).

What is the element ID of part 6538b in black?

In black, part 6538b has element ID 4113805 or 4107083. Number 6538b is the mould number, the same for every colour.

Is LEGO part 6538b still used in recent sets?

Not in our database: its last set dates from 2014 (42025 Cargo Plane). Look for it in second-hand sets or on BrickLink.

Where can I buy LEGO part 6538b individually?

Single parts 6538b 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.