Constructed from stainless steel for durability in demanding environments, this straight adapter connects a 1-1/16 - 12 SAE 37° male flare end to a 3/4-14 NPTF male thread, making it well-suited for hydraulic, instrumentation, and chemical processing systems. The Danfoss / Eaton Aeroquip 259-2021-12-12 Male Connector Male 1-1/16 - 12 SAE 37 Male 3/4-14 NPTF Stainless Steel is part of the 2021 Series straight adapter line, certified to SAE, ASA, and ASME standards. It is rated for a minimum working temperature of -65°F and supports operating pressures above standard SAE specifications. The stainless steel construction provides inherent corrosion resistance, and the adapter is available within a broad range of compatible styles for design flexibility across varied system configurations. No thread sealant is required for assembly.
SKU: 259-2021-12-12
Supplier Part Number (MPN): 259-2021-12-12
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Specifications
Alternate Part Numbers
Alternate Part NumberMINO-00925X09843
Application
Other - Hydraulic, instrumentation, and chemical processing systems
Certifications
SAE|ASA|ASME
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13554
End Gender 2
13556
End Size 1
0.75
End Type 1
NPT
End Type 2
NPTF
Features
Dura-Kote plating for superior corrosion resistance|Design flexibility with hundreds of styles to choose from|Higher operating pressures above SAE standards
ICC
Straight Adapters
Item Type
NPT Male / SAE 37° Male Straight Adapter
Language
English
Minimum Working Temperature
-65
Net Pack Quantity Units
EA
NMFC
50
Product Material
Stainless Steel
Product Width
1.13
Sub Brand
None
Supplier Part Number
259-2021-12-12
Product Weight
0.27 lbs
Product Questions & Answers (3)
Question by: Lee W on Apr 28, 2025, 3:48 PM
fitting's made of stainless steel, so I'm guessing it holds up pretty good in wet or chemical environments?
Answer by: Customer Support on Apr 29, 2025, 5:57 PM
Stainless steel was the right call for that kind of exposure. Corrosion is a real concern in chemical processing and instrumentation lines, and this material handles it far better than standard carbon steel fittings. The construction is rated down to negative 65 degrees Fahrenheit as well, so cold environments or outdoor wintertime use won't be a problem either.
Question by: Freddie H on Nov 15, 2025, 11:40 AM
Can this connector handle hydraulic systems, or is it more for instrumentation type stuff?
Answer by: Customer Support on Nov 17, 2025, 9:39 AM
It’s suitable for hydraulic, instrumentation, and chemical processing systems.
Question by: Dwight B on Aug 1, 2025, 9:46 PM
trying to swap out a straight adapter i’ve got, is this one the kind that goes from a 37 degree flare to a pipe thread?
Answer by: Customer Support on Aug 3, 2025, 6:04 AM
Built as a straight adapter, it connects an SAE 37° male flare on one end to a male NPTF pipe thread on the other, which is a common combo for hydraulic and instrumentation hookups.