Nickel Plated Brass Thread Reducers Metric to MetricThreads


Nickel Plated Brass M40 x 1.5 to M20 x 1.5 Thread Reducers

Sealcon # RM-4020-BR
Color Nickel
Hummel # 1.077.4020.50
Hummel RSD-Ms
Cable Range

Thread Type
Male (A)
M40 x 1.5
Female (B)
M20 x 1.5
Height (H)
.47" (12 mm)
Thread Length (T)
.31" (8 mm)
Wrench Flat (W)
1.69" (43 mm)


Is your thread size off by one size? These Reducers will solve that threading problem. Reducers will allow you to convert holes which fit PG, NPT & Metric threads to a smaller female thread of the same thread type to fit your application needs. Thread Reducers are available in Gray Nylon, Nickel Plated Brass and Stainless Steel.

Technical Data


  • Fittings: Nickel Plated Brass
  • Form Seal:
  • Optional O-Ring: Buna-N, FPM or Silicone
  • Optional Seal Ring: Polyethylene or Fiber-Reinforced Plastic

Operating Temperature will vary based off selected O-Ring and the material of the product it is applied to.


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