Constructed from carbon steel with Dura-Kote plating, this locknut delivers reliable corrosion resistance in demanding hydraulic and fluid connector assemblies. The Danfoss / Eaton ADP Bulkhead Lock Nut belongs to the 210212 Series and is engineered to secure bulkhead fittings at operating pressures above standard SAE thresholds, making it well suited for high-pressure industrial hydraulic systems.
Part of the Eaton Aeroquip line, this component is available across hundreds of fitting styles, supporting broad design flexibility in custom or complex assemblies. Carbon steel construction keeps the part durable under mechanical stress, while the corrosion-resistant finish supports service life in harsh or exposed environments.
SKU: 210212-16S
Supplier Part Number (MPN): 210212-16S
Alternate Part Numbers: C1BB82, MI-00317896, MINO-00015F64781
Loading related products…
Specifications
Alternate Part Numbers
Alternate Part NumberC1BB82, Alternate Part Number MI-00317896, Alternate Part Number MINO-00015F64781
Color
None
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
Features
Dura-Kote plating for superior corrosion resistance|Design flexibility with hundreds of styles to choose from|Higher operating pressures above SAE standards
Finish
None
ICC
Nuts
Language
English
Materials
Carbon steel
Net Pack Quantity Units
EA
NMFC
50
Product Width
1.62
Series
210212
Sub Brand
None
Supplier Part Number
210212-16S
Type
Locknut
Product Weight
0.12 lbs
Product Questions & Answers (3)
Question by: Rick P on Mar 29, 2025, 12:40 PM
what's the finish on this locknut, and will it hold up if it's gonna be sitting in a wet or real humid environment?
Answer by: Customer Support on Mar 31, 2025, 6:09 AM
Carbon steel construction with Dura-Kote plating gives this nut solid corrosion resistance, so humid or moisture-heavy conditions are well within what it's built to handle. That plating is specifically what sets it above bare steel hardware in environments where rust is a real concern.
Question by: Brent S on Apr 22, 2025, 6:13 PM
Got a 210212-16S bulkhead nut that’s seen better days, is this the right lock nut to swap in?
Answer by: Customer Support on Apr 23, 2025, 7:53 PM
For a straight replacement, this is the 210212 Series ADP bulkhead lock nut with supplier part number 210212-16S, so it matches that series and part number callout.
Question by: Stan B on Oct 12, 2025, 2:26 PM
Will this lock nut work with standard Aeroquip fittings, or is it only for Danfoss stuff?
Answer by: Customer Support on Oct 13, 2025, 3:08 PM
It's an Eaton Aeroquip part, so it's made to work with their ADP series fittings. You'll want to double-check the sizing to be sure.
