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Steel Bulkhead Locknut, 7/16-20 Thread

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Description & Features

This steel bulkhead locknut is an Eaton Aeroquip 210212 series spare part with 7/16-20 threads. It has an A dimension of 0.25 and a B dimension of 0.69.

The product's fluid compatibility information can be found through the provided document link.

SKU: 210212-4S

Supplier Part Number (MPN): 210212-4S

Alternate Part Numbers: C1BB83, MI-00317840, MINO-00015F64773

Specifications

A
0.25
Alternate Part Numbers
Alternate Part Number C1BB83, Alternate Part Number MI-00317840, Alternate Part Number MINO-00015F64773, Alternate Part Number MINO-00925X09551
B
0.69
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
Finish
None
Materials
Carbon steel
Series
210212
Supplier Part Number
210212-4S
Thread 2
7/16-20
Thread Sealant
No
Tube O.D.
0.25
Tube O.D.
0.25
Type
Locknut
Product Weight
0.02 lbs

Related Documents

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Product Questions & Answers (3)

Question by: Jerry L on Feb 9, 2026, 9:47 PM
got a bulkhead fitting that takes a 7/16-20 nut, is this the right locknut for it?
Answer by: Customer Support on Feb 11, 2026, 7:41 AM
The key detail is the thread. This locknut is 7/16-20 and it’s called out as a Danfoss and Eaton 210212 Series spare part bulkhead nut, so it matches bulkhead setups that use that series and thread size.
Question by: Cindy S on Dec 19, 2025, 7:58 AM
what thread size is this locknut, and is it the same part Eaton lists under the 210212 series?
Answer by: Customer Support on Dec 20, 2025, 9:34 AM
7/16-20 is the thread size on this one. It's cataloged under the Eaton Aeroquip 210212 series as a spare part bulkhead nut, with the catalog number C1BB83. So yes, it lines up with what Eaton lists for that series.
Question by: Clint S on Dec 15, 2025, 4:50 PM
Just want to make sure this will fit my setup. It's a 7/16-20 thread, right?
Answer by: Customer Support on Dec 16, 2025, 4:57 PM
That's correct. This is a bulkhead locknut with a 7/16-20 thread size, fitting standard Danfoss / Eaton 210212 Series applications.