Shop Superlok SFA Stainless Tube Stub - Female NPT

Series SFA Straight Male Tube Stub x Female NPT Adapters in 316 stainless steel (316SS) are high-quality fittings designed to connect a straight male tube stub to a female NPT (National Pipe Thread) threaded connection in hydraulic and pneumatic systems. Made from corrosion-resistant 316SS, these adapters are ideal for use in harsh environments such as chemical processing, marine, and food industries. The male tube stub side connects to a short section of straight tubing, typically made from stainless steel, which is the preferred material for hydraulic systems due to its strength and resistance to corrosion. The tubing is securely fastened to the adapter using a compression fitting, ensuring a leak-free connection. The female NPT side of the adapter features tapered threads that create a strong, tight seal when connected to other NPT-compatible components. NPT fittings are known for their ability to handle high-pressure applications, providing reliable and efficient connections in fluid systems.

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Straight Instrumentation TUBE STUB - FNPT Union

1/8" to 1" Nominal Tube OD

Stainless Steel

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Shop Superlok SFA Stainless Tube Stub - Female NPT

Click on the model number in the chart below to view that adapter. 


Product SKU Brand Material Nominal Tube Stub Female NPT Threads Lead Time Price
SFA 2-2N-S316 Superlok 316 Stainless Steel 1/8" (-2) 1/8-27 (-2N) 1-2 Weeks $6.99
SFA 2-4N-S316 Superlok 316 Stainless Steel 1/8" (-2) 1/4-18 (-4N) 1-2 Weeks $7.99
SFA 4-2N-S316 Superlok 316 Stainless Steel 1/4" (-4) 1/8-27 (-2N) Same Day $6.99
SFA 4-4N-S316 Superlok 316 Stainless Steel 1/4" (-4) 1/4-18 (-4N) Same Day $7.99
SFA 4-6N-S316 Superlok 316 Stainless Steel 1/4" (-4) 3/8-18 (-6N) Same Day $9.99
SFA 4-8N-S316 Superlok 316 Stainless Steel 1/4" (-4) 1/2-14 (-8N) Same Day $10.99
SFA 6-2N-S316 Superlok 316 Stainless Steel 3/8" (-6) 1/8-27 (-2N) 1-2 Weeks $7.99
SFA 6-4N-S316 Superlok 316 Stainless Steel 3/8" (-6) 1/4-18 (-4N) 1-2 Weeks $8.99
SFA 6-6N-S316 Superlok 316 Stainless Steel 3/8" (-6) 3/8-18 (-6N) Same Day $10.99
SFA 6-8N-S316 Superlok 316 Stainless Steel 3/8" (-6) 1/2-14 (-8N) Same Day $13.99
SFA 8-4N-S316 Superlok 316 Stainless Steel 1/2" (-8) 1/4-18 (-4N) Same Day $10.99
SFA 8-6N-S316 Superlok 316 Stainless Steel 1/2" (-8) 3/8-18 (-6N) Same Day $10.99
SFA 8-8N-S316 Superlok 316 Stainless Steel 1/2" (-8) 1/2-14 (-8N) Same Day $15.99
SFA 8-12N-S316 Superlok 316 Stainless Steel 1/2" (-8) 3/4-14 (-12N) Same Day $19.99
SFA 10-8N-S316 Superlok 316 Stainless Steel 5/8" (-10) 1/2-14 (-8N) 1-2 Weeks $17.99
SFA 12M-4N-S316 Superlok 316 Stainless Steel 12mm (-12M) 1/4-18 (-4N) 1-2 Weeks $11.99
SFA 12-8N-S316 Superlok 316 Stainless Steel 3/4" (-12) 1/2-14 (-8N) 1-2 Weeks $19.99
SFA 12-12N-S316 Superlok 316 Stainless Steel 3/4" (-12) 3/4-14 (-12N) 1-2 Weeks $19.99
SFA 12-16N-S316 Superlok 316 Stainless Steel 3/4" (-12) 1-11-1/2 (-16N) 1-2 Weeks $39.99
SFA 16-12N-S316 Superlok 316 Stainless Steel 1" (-16) 3/4-14 (-12N) 1-2 Weeks $34.55
SFA 16-16N-S316 Superlok 316 Stainless Steel 1" (-16) 1-11-1/2 (-16N) 1-2 Weeks $42.99
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See the chart below for additional Dimensional Detail & Pressure Ratings




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