Copper Nickel (CuNi) Screwed Fittings

Copper Nickel Screwed / Threaded Fittings are commonly used in small-bore piping systems for shipbuilding, desalination plants, and more, where resistance to biofouling, chloride corrosion, and stress corrosion cracking are essential. 

Stirlings stocks 90/10 Copper Nickel Screwed Fittings, manufactured to BSP Thread sizes. 

Stirlings supplies Nipple, Socket and Hex Plug Fittings in sizes 12.00mm (0.25 inch) to 76.10mm (2.5 inches). Everything currently in stock is specified in the tables below.   

For alternate Copper Nickel Screwed Fitting types, please contact us. 

● Stocked Item ○ Market Available

Anything not currently in stock/Market Available can be obtained via indent. 

  

Nipples 

 

Outside diameter of pipe ØE L Theoretical  
nominal actual Thread mm Weight Availability
inch mm (BSP)   Kg/piece  
          FBCNTN
0.25 12 0.25” 35 0.04 ●
0.38 16 0.38” 35 0.04 ○
0.5 20 0.5” 35 0.04 ●
0.75 25 0.75” 40 0.07 ●
1 30 1” 40 0.11 ●
1.25 38 1.25” 50 0.14 ●
1.5 44.5 1.5” 50 0.21 ●
2.0 57 2” 55 0.35 ●
2.5 76.1 2.5” 75 0.68 ●

  

Socket 

 

● Stocked Item ○ Market Available

 

 
ØD Form B
Thread (BSP) ØA C L Theoretical Avail
  mm mm mm Weight  
        Kg/piece  
          FBCNS
0.25 20 12 20 0.03 ●
0.38 25 12 20 0.05 ●
0.50 30 14 23 0.08 ●
0.50 30 14 50 0.17 ○ 
0.50 30 14 75 0.25 ○ 
0.50 30 14 100 0.34 ○ 
0.50 30 14 125 0.44 ○ 
0.75 38 16 25 0.14 ●
0.75 38 16 50 0.28 ○ 
0.75 38 16 75 0.42 ○ 
0.75 38 16 100 0.56 ○ 
0.75 38 16 125 0.70 ○ 
1 45 18 28 0.19 ●
1 45 18 50 0.35 ○ 
1 45 18 75 0.52 ○ 
1 45 18 100 0.70 ○ 
1 45 18 125 0.88 ○ 
1.25 55 20 30 0.29 ○
1.5 60 22 32 0.37 ●
2 75 23 40 0.68 ●

 

Hex Plug 

 

● Stocked Item ○ Market Available

 

 
Nominal Actual E Thread B C C A/f Theoretical Avail
Inch  mm BSPT mm mm mm Weight  
            Kg/piece  
              FBCNP
0.25   0.25         ●
0.375   0.375         ●
0.50 16 0.5 8 18 19 0.17 ●
0.75 25 0.75 10 18 24 0.30 ●
1 30 1 10 21 30 0.55 ●
1.25 38 1.25 14 22 41 0.95 ●
1.5 44.5 1.5 16 22 41 1.10 ●
2 57 2 17 22 50 1.85 ●