Breco 4 Series Couplers
The Breco 4 Series is the 3/8" body industrial interchange, a common air coupler size for shop and industrial systems. This collection includes Breco 4 Series couplers and plugs in brass, steel, and brass with steel sleeve, with NPT, hose barb, and push-on terminations. Filter by thread, material, and coupler or plug to find your part.
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Original price $ 19.69Original price $ 19.69 - Original price $ 19.69Original price $ 19.69Current price $ 15.79$ 15.79 - $ 15.79Current price $ 15.79
Breco B-3CM3-S, 3/8" Industrial Coupler x 3/8" Male NPT, 4 Series, Sleeve Guard, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-3CM3-S is a Steel 3/8" industrial coupler from the Breco 4 Series — a hig...
View full detailsOriginal price $ 19.69Original price $ 19.69 - Original price $ 19.69Original price $ 19.69Current price $ 15.79$ 15.79 - $ 15.79Current price $ 15.79Save 20% -
Original price $ 30.79Original price $ 30.79 - Original price $ 30.79Original price $ 30.79Current price $ 24.59$ 24.59 - $ 24.59Current price $ 24.59
Breco B-3CM4-S, 3/8" Industrial Coupler x 1/2" Male NPT, 4 Series, Sleeve Guard, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-3CM4-S is a Steel 3/8" industrial coupler from the Breco 4 Series — a hig...
View full detailsOriginal price $ 30.79Original price $ 30.79 - Original price $ 30.79Original price $ 30.79Current price $ 24.59$ 24.59 - $ 24.59Current price $ 24.59Save 20% -
Original price $ 35.39Original price $ 35.39 - Original price $ 35.39Original price $ 35.39Current price $ 28.29$ 28.29 - $ 28.29Current price $ 28.29
Breco B-3CPS3-S, 3/8" Industrial Coupler x 3/8" Push-On Hose Stem, 4 Series, Sleeve Guard, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-3CPS3-S is a Steel 3/8" industrial coupler from the Breco 4 Series — a hi...
View full detailsOriginal price $ 35.39Original price $ 35.39 - Original price $ 35.39Original price $ 35.39Current price $ 28.29$ 28.29 - $ 28.29Current price $ 28.29Save 20% -
Original price $ 22.69Original price $ 22.69 - Original price $ 22.69Original price $ 22.69Current price $ 18.09$ 18.09 - $ 18.09Current price $ 18.09
Breco B-3CS3-S, 3/8" Industrial Coupler x 3/8" Hose ID, 4 Series, Sleeve Guard, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-3CS3-S is a Steel 3/8" industrial coupler from the Breco 4 Series — a hig...
View full detailsOriginal price $ 22.69Original price $ 22.69 - Original price $ 22.69Original price $ 22.69Current price $ 18.09$ 18.09 - $ 18.09Current price $ 18.09Save 20% -
Original price $ 5.49Original price $ 5.49 - Original price $ 5.49Original price $ 5.49Current price $ 4.39$ 4.39 - $ 4.39Current price $ 4.39
Breco B-B3F2-S, 3/8" Industrial Plug x 1/4" Female NPT, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-B3F2-S is a Steel 3/8" industrial plug from the Breco 4 Series — a high-f...
View full detailsOriginal price $ 5.49Original price $ 5.49 - Original price $ 5.49Original price $ 5.49Current price $ 4.39$ 4.39 - $ 4.39Current price $ 4.39Save 20% -
Original price $ 19.89Original price $ 19.89 - Original price $ 19.89Original price $ 19.89Current price $ 15.89$ 15.89 - $ 15.89Current price $ 15.89
Breco B-B3F3-B, 3/8" Industrial Plug x 3/8" Female NPT, 4 Series, Brass
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-B3F3-B is a Brass 3/8" industrial plug from the Breco 4 Series — a high-f...
View full detailsOriginal price $ 19.89Original price $ 19.89 - Original price $ 19.89Original price $ 19.89Current price $ 15.89$ 15.89 - $ 15.89Current price $ 15.89Save 20% -
Original price $ 6.59Original price $ 6.59 - Original price $ 6.59Original price $ 6.59Current price $ 5.29$ 5.29 - $ 5.29Current price $ 5.29
Breco B-B3F3-S, 3/8" Industrial Plug x 3/8" Female NPT, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-B3F3-S is a Steel 3/8" industrial plug from the Breco 4 Series — a high-f...
View full detailsOriginal price $ 6.59Original price $ 6.59 - Original price $ 6.59Original price $ 6.59Current price $ 5.29$ 5.29 - $ 5.29Current price $ 5.29Save 20% -
Original price $ 39.49Original price $ 39.49 - Original price $ 39.49Original price $ 39.49Current price $ 31.59$ 31.59 - $ 31.59Current price $ 31.59
Breco B-B3F4-S, 3/8" Industrial Plug x 1/2" Female NPT, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-B3F4-S is a Steel 3/8" industrial plug from the Breco 4 Series — a high-f...
View full detailsOriginal price $ 39.49Original price $ 39.49 - Original price $ 39.49Original price $ 39.49Current price $ 31.59$ 31.59 - $ 31.59Current price $ 31.59Save 20% -
Original price $ 7.29Original price $ 7.29 - Original price $ 7.29Original price $ 7.29Current price $ 5.79$ 5.79 - $ 5.79Current price $ 5.79
Breco B-B3M2-S, 3/8" Industrial Plug x 1/4" Male NPT, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-B3M2-S is a Steel 3/8" industrial plug from the Breco 4 Series — a high-f...
View full detailsOriginal price $ 7.29Original price $ 7.29 - Original price $ 7.29Original price $ 7.29Current price $ 5.79$ 5.79 - $ 5.79Current price $ 5.79Save 21% -
Original price $ 8.39Original price $ 8.39 - Original price $ 8.39Original price $ 8.39Current price $ 6.69$ 6.69 - $ 6.69Current price $ 6.69
Breco B-B3M3-B, 3/8" Industrial Plug x 3/8" Male NPT, 4 Series, Brass
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-B3M3-B is a Brass 3/8" industrial plug from the Breco 4 Series — a high-f...
View full detailsOriginal price $ 8.39Original price $ 8.39 - Original price $ 8.39Original price $ 8.39Current price $ 6.69$ 6.69 - $ 6.69Current price $ 6.69Save 20% -
Original price $ 7.79Original price $ 7.79 - Original price $ 7.79Original price $ 7.79Current price $ 6.29$ 6.29 - $ 6.29Current price $ 6.29
Breco B-B3M3-S, 3/8" Industrial Plug x 3/8" Male NPT, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-B3M3-S is a Steel 3/8" industrial plug from the Breco 4 Series — a high-f...
View full detailsOriginal price $ 7.79Original price $ 7.79 - Original price $ 7.79Original price $ 7.79Current price $ 6.29$ 6.29 - $ 6.29Current price $ 6.29Save 19% -
Original price $ 7.09Original price $ 7.09 - Original price $ 7.09Original price $ 7.09Current price $ 5.69$ 5.69 - $ 5.69Current price $ 5.69
Breco B-B3M4-S, 3/8" Industrial Plug x 1/2" Male NPT, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-B3M4-S is a Steel 3/8" industrial plug from the Breco 4 Series — a high-f...
View full detailsOriginal price $ 7.09Original price $ 7.09 - Original price $ 7.09Original price $ 7.09Current price $ 5.69$ 5.69 - $ 5.69Current price $ 5.69Save 20% -
Original price $ 6.39Original price $ 6.39 - Original price $ 6.39Original price $ 6.39Current price $ 5.09$ 5.09 - $ 5.09Current price $ 5.09
Breco B-B3PS3-S, 3/8" Industrial Plug x 3/8" Push-On Hose Stem, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-B3PS3-S is a Steel 3/8" industrial plug from the Breco 4 Series — a high-...
View full detailsOriginal price $ 6.39Original price $ 6.39 - Original price $ 6.39Original price $ 6.39Current price $ 5.09$ 5.09 - $ 5.09Current price $ 5.09Save 20% -
Original price $ 9.59Original price $ 9.59 - Original price $ 9.59Original price $ 9.59Current price $ 7.69$ 7.69 - $ 7.69Current price $ 7.69
Breco B-B3S2-S, 3/8" Industrial Plug x 1/4" Hose ID, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-B3S2-S is a Steel 3/8" industrial plug from the Breco 4 Series — a high-f...
View full detailsOriginal price $ 9.59Original price $ 9.59 - Original price $ 9.59Original price $ 9.59Current price $ 7.69$ 7.69 - $ 7.69Current price $ 7.69Save 20% -
Original price $ 6.39Original price $ 6.39 - Original price $ 6.39Original price $ 6.39Current price $ 5.09$ 5.09 - $ 5.09Current price $ 5.09
Breco B-B3S3-S, 3/8" Industrial Plug x 3/8" Hose ID, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-B3S3-S is a Steel 3/8" industrial plug from the Breco 4 Series — a high-f...
View full detailsOriginal price $ 6.39Original price $ 6.39 - Original price $ 6.39Original price $ 6.39Current price $ 5.09$ 5.09 - $ 5.09Current price $ 5.09Save 20% -
Original price $ 7.09Original price $ 7.09 - Original price $ 7.09Original price $ 7.09Current price $ 5.69$ 5.69 - $ 5.69Current price $ 5.69
Breco B-B3S4-S, 3/8" Industrial Plug x 1/2" Hose ID, 4 Series, Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco B-B3S4-S is a Steel 3/8" industrial plug from the Breco 4 Series — a high-f...
View full detailsOriginal price $ 7.09Original price $ 7.09 - Original price $ 7.09Original price $ 7.09Current price $ 5.69$ 5.69 - $ 5.69Current price $ 5.69Save 20% -
Original price $ 21.89Original price $ 21.89 - Original price $ 21.89Original price $ 21.89Current price $ 17.59$ 17.59 - $ 17.59Current price $ 17.59
Breco D440, 3/8" Industrial Coupler x 1/4" Female NPT, 4 Series, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco D440 is a Brass/Steel 3/8" industrial coupler from the Breco 4 Series — a h...
View full detailsOriginal price $ 21.89Original price $ 21.89 - Original price $ 21.89Original price $ 21.89Current price $ 17.59$ 17.59 - $ 17.59Current price $ 17.59Save 20% -
Original price $ 26.29Original price $ 26.29 - Original price $ 26.29Original price $ 26.29Current price $ 21.09$ 21.09 - $ 21.09Current price $ 21.09
Breco D440BL, 3/8" Industrial Coupler x 1/4" Female NPT, 4 Series, Ball Lock, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco D440BL is a Brass/Steel 3/8" industrial coupler from the Breco 4 Series — a...
View full detailsOriginal price $ 26.29Original price $ 26.29 - Original price $ 26.29Original price $ 26.29Current price $ 21.09$ 21.09 - $ 21.09Current price $ 21.09Save 20% -
Original price $ 25.39Original price $ 25.39 - Original price $ 25.39Original price $ 25.39Current price $ 20.29$ 20.29 - $ 20.29Current price $ 20.29
Breco D442, 3/8" Industrial Coupler x 1/4" Hose ID, 4 Series, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco D442 is a Brass/Steel 3/8" industrial coupler from the Breco 4 Series — a h...
View full detailsOriginal price $ 25.39Original price $ 25.39 - Original price $ 25.39Original price $ 25.39Current price $ 20.29$ 20.29 - $ 20.29Current price $ 20.29Save 20% -
Original price $ 29.89Original price $ 29.89 - Original price $ 29.89Original price $ 29.89Current price $ 23.89$ 23.89 - $ 23.89Current price $ 23.89
Breco D442BL, 3/8" Industrial Coupler x 1/4" Hose ID, 4 Series, Ball Lock, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco D442BL is a Brass/Steel 3/8" industrial coupler from the Breco 4 Series — a...
View full detailsOriginal price $ 29.89Original price $ 29.89 - Original price $ 29.89Original price $ 29.89Current price $ 23.89$ 23.89 - $ 23.89Current price $ 23.89Save 20% -
Original price $ 26.39Original price $ 26.39 - Original price $ 26.39Original price $ 26.39Current price $ 21.19$ 21.19 - $ 21.19Current price $ 21.19
Breco D452, 3/8" Industrial Coupler x 5/16" Hose ID, 4 Series, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco D452 is a Brass/Steel 3/8" industrial coupler from the Breco 4 Series — a h...
View full detailsOriginal price $ 26.39Original price $ 26.39 - Original price $ 26.39Original price $ 26.39Current price $ 21.19$ 21.19 - $ 21.19Current price $ 21.19Save 20% -
Original price $ 30.29Original price $ 30.29 - Original price $ 30.29Original price $ 30.29Current price $ 24.19$ 24.19 - $ 24.19Current price $ 24.19
Breco D452BL, 3/8" Industrial Coupler x 5/16" Hose ID, 4 Series, Ball Lock, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco D452BL is a Brass/Steel 3/8" industrial coupler from the Breco 4 Series — a...
View full detailsOriginal price $ 30.29Original price $ 30.29 - Original price $ 30.29Original price $ 30.29Current price $ 24.19$ 24.19 - $ 24.19Current price $ 24.19Save 20% -
Original price $ 22.69Original price $ 22.69 - Original price $ 22.69Original price $ 22.69Current price $ 18.09$ 18.09 - $ 18.09Current price $ 18.09
Breco D460, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco D460 is a Brass/Steel 3/8" industrial coupler from the Breco 4 Series — a h...
View full detailsOriginal price $ 22.69Original price $ 22.69 - Original price $ 22.69Original price $ 22.69Current price $ 18.09$ 18.09 - $ 18.09Current price $ 18.09Save 20% -
Original price $ 27.09Original price $ 27.09 - Original price $ 27.09Original price $ 27.09Current price $ 21.69$ 21.69 - $ 21.69Current price $ 21.69
Breco D460BL, 3/8" Industrial Coupler x 3/8" Female NPT, 4 Series, Ball Lock, Brass/Steel
In stockReliable, leak-free 3/8" connections for air and fluid lines. The Breco D460BL is a Brass/Steel 3/8" industrial coupler from the Breco 4 Series — a...
View full detailsOriginal price $ 27.09Original price $ 27.09 - Original price $ 27.09Original price $ 27.09Current price $ 21.69$ 21.69 - $ 21.69Current price $ 21.69Save 20%
