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Steel Adapter, 3/4-14 Female NPT To 1-5/16-12 Male SAE O-Ring Boss (Straight Thread O-Ring), Straight

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Description & Features

Part of the Danfoss Power Solutions (Aeroquip) 2216 Series, this adapter connects 3/4-14 female NPT ports to 1-5/16-12 male SAE O-Ring Boss fittings in a straight configuration. The SAE O-Ring Boss end provides a reliable, leak-resistant seal through direct thread-to-O-ring contact, making it well suited for high-pressure hydraulic circuits. Constructed from steel, it is rated for a minimum working temperature of -40°F/°C, supporting use in demanding thermal environments.

This fitting is used across marine and military equipment, chemical processing, pulp and paper, food and beverage processing, and off-shore drilling applications. The Steel Adapter, 3/4-14 Female NPT To 1-5/16-12 Male SAE O-Ring Boss (Straight Thread O-Ring), Straight carries catalog number C1BC73 and is classified under UNSPSC code 40183100. No thread sealant is required on the O-Ring Boss end.

SKU: 2216-12-16S

Supplier Part Number (MPN): 2216-12-16S

Alternate Part Numbers: 2104-2216-16-12, C1BC73, MI-00320291, MINO-00015F65802

Specifications

A
1
Alternate Part Numbers
Alternate Part Number 2104-2216-16-12, Alternate Part Number C1BC73, Alternate Part Number MI-00320291, Alternate Part Number MINO-00015F65802, Alternate Part Number MINO-00925X09646
Application
Marine/Military, Chemical Processing, Pulp and Paper Industries, Food and Beverage Processing, Off-Shore Drilling
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13553
End Gender 2
13556
End Size 1
0.75
End Type 1
NPTF
End Type 2
SAE ORB
Minimum Working Temperature
-40
Supplier Part Number
2216-12-16S
Thread 1
3/4-14
Thread 2
1-5/16-12
Thread Sealant
No
Tube I.D. 1
0.89
Product Weight
0.10 lbs

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Product Questions & Answers (3)

Question by: Floyd P on Feb 13, 2026, 12:56 PM
Just want to make sure this adapter will fit my application. I've got a 3/4-14 female NPT connection and need to adapt it to a 1-5/16-12 male SAE O-ring boss. Is this the right part?
Answer by: Customer Support on Feb 14, 2026, 8:04 PM
Yes sir, that's exactly what this Eaton Aeroquip adapter is designed for - connecting a 3/4-14 female NPT to a 1-5/16-12 male SAE O-ring boss.
Question by: Shawn M on Mar 19, 2026, 7:24 AM
what industries is this adapter actually used in? trying to figure out if it fits our application before ordering
Answer by: Customer Support on Mar 20, 2026, 6:01 PM
Steel construction and a 3/4-14 female NPT to 1-5/16-12 male SAE O-ring boss configuration make this adapter a solid fit across several demanding environments. It's part of Eaton Aeroquip's 2216 Series and sees regular use in marine and military systems, chemical processing, pulp and paper use, food and beverage processing, and offshore drilling. If your application falls into any of those categories, you're in good shape with this one.
Question by: Merle B on Mar 24, 2026, 10:39 AM
got a hose with 3/4-14 female NPT on one end and i need to go into a male SAE o-ring boss, is this the right adapter?
Answer by: Customer Support on Mar 25, 2026, 1:52 PM
Fit comes down to the thread callouts, and this adapter is exactly that combo. One side is 3/4-14 female NPT and the other side is 1-5/16-12 male SAE O-ring boss in a straight adapter body.