Hoses-Grommets-&-Clamps > Automotive-Brake-Lines-&-Fittings

Brake Line Fittings - 3/16" Domestic

Brake Line Fittings

Brake Line Fittings Brake Line Fittings Brake Line Union

Tube nuts, unions, and adapters have uses across different types of automotive lines. Use a tube nut to create a connection by placing it over the brake line with the threads out to the side that will be flared. A union is for joining two lines together. Be sure to match the thread and flare of your connecting lines. Adapters are used to connect your line to the port if there is a difference. With adapters, match the female side to your brake line, and match the male side to the port connection. All styles available are sold individually so you can get exactly what you need.


  • Available: Tube nuts, Unions, & Adapters.
  • Fittings sold individually.
Item Description Price
1+ I Ext. Price I 5+ Ext. Price I I 10+ Ext. Price I
Qty in
Package 		In Stock Add to Cart
1239010 Steel Tube Nut, Long, 3/16" (3/8-24 Inverted) (5 MIN)
0.62700 3.13 I 0.57800 2.89 I 0.50100 2.50
5 EA ✓
1239011 Steel Tube Nut, 3/16" (7/16-24 Inverted) (5 MIN)
1.00100 5.00 I 0.94600 4.73 I 0.79 3.95
5 EA ✓
1239012 Steel Tube Nut, 3/16" (3/8-24 Inverted) (5 MIN)
0.49400 2.47 I 0.45600 2.28 I 0.39500 1.98
5 EA ✓
1239103 Brass Brake Line Union, 3/16" (3/8-24 Inverted) (5 MIN)
1.19900 6.00 I 1.10600 5.53 I 1.02700 5.13
5 EA ✓

Brake Line Fittings - 1/4" Domestic

Brake Line Fittings

Brake Line Fittings Brake Line Fittings Fittings

Tube nuts, unions, and adapters have uses across different types of automotive lines. Use a tube nut to create a connection by placing it over the brake line with the threads out to the side that will be flared. A union is for joining two lines together. Be sure to match the thread and flare of your connecting lines. Adapters are used to connect your line to the port if there is a difference. With adapters, match the female side to your brake line, and match the male side to the port connection. All styles available are sold individually so you can get exactly what you need.


  • Available: Tube nuts, Unions, & Adapters.
  • Fittings sold individually.
Item Description Price
1+ I Ext. Price I 5+ Ext. Price I I 10+ Ext. Price I
Qty in
Package 		In Stock Add to Cart
1239016 Steel Tube Nut, Long, 1/4" (7/16-24 Inverted) (5 MIN)
0.81100 4.06 I 0.76600 3.83 I 0.72700 3.63
5 EA ✓
1239013 Steel Tube Nut, 1/4" (7/16-24 Inverted) (5 MIN)
0.62300 3.12 I 0.57500 2.88 I 0.49800 2.49
5 EA ✓
1239104 Brass Brake Line Union, 1/4" (7/16-24 Inverted) (5 MIN)
1.19100 5.96 I 1.09900 5.50 I 1.02100 5.10
5 EA ✓

Brake Line Fittings - 5/16"-3/8" Domestic

Brake Line Fittings

Brake Line Fittings Line Fittings Brake Line Fittings Brake Line Union Line Fittings

Tube nuts, unions, and adapters have uses across different types of automotive lines. Use a tube nut to create a connection by placing it over the brake line with the threads out to the side that will be flared. A union is for joining two lines together. Be sure to match the thread and flare of your connecting lines. Adapters are used to connect your line to the port if there is a difference. With adapters, match the female side to your brake line, and match the male side to the port connection. All styles available are sold individually so you can get exactly what you need.


  • Available: Tube nuts, Unions, & Adapters.
  • Fittings sold individually.
Item Description Price
1+ I Ext. Price I 5+ Ext. Price I I 10+ Ext. Price I
Qty in
Package 		In Stock Add to Cart
1239014 Steel Tube Nut, 5/16" (1/2-20 Inverted) (5 MIN)
0.81100 4.06 I 0.76600 3.83 I 0.64 3.20
5 EA ✓
1239105 Brass Brake Line Union, 5/16" (1/2-20 Inverted) (5 MIN)
1.51100 7.55 I 1.36600 6.83 I 1.23200 6.16
5 EA ✓
1239015 Steel Tube Nut, 3/8" (5/8-18 Inverted) (5 MIN)
0.78600 3.93 I 0.70800 3.54 I 0.63700 3.19
5 EA ✓
1239106 Brass Brake Line Union, 3/8" (5/8-18 Inverted) (5 MIN)
2.56700 12.84 I 2.42200 12.11 I 2.02900 10.14
5 EA ✓

Brake Line Fittings - International

Brake Line Fittings

Brake Line Fittings Brake Line Union Fittings

Tube nuts, unions, and adapters have uses across different types of automotive lines. Use a tube nut to create a connection by placing it over the brake line with the threads out to the side that will be flared. A union is for joining two lines together. Be sure to match the thread and flare of your connecting lines. Adapters are used to connect your line to the port if there is a difference. With adapters, match the female side to your brake line, and match the male side to the port connection. All styles available are sold individually so you can get exactly what you need.


  • Available: Tube nuts, Unions, & Adapters.
  • Fittings sold individually.
Item Description Price
1+ I Ext. Price I 5+ Ext. Price I I 10+ Ext. Price I
Qty in
Package 		In Stock Add to Cart
1239040 Japanese Std Steel Tube Nut, 3/16" (M10 x 1.0 Inverted) (5 MIN)
0.88800 4.44 I 0.79900 4.00 I 0.72 3.60
5 EA Call
1239109 Japanese Std Steel Brake Line Union, 3/16" (M10 x 1.0 Inverted) (5 MIN)
4.12 20.60 I 3.80300 19.02 I 3.53200 17.66
5 EA ✓
1239039 European Std Steel Tube Nut, 3/16" (M10 x 1.0 Bubble) (5 MIN)
1.14800 5.74 I 1.05900 5.29 I 0.98400 4.92
5 EA ✓
1239108 European Std Steel Brake Line Union, 3/16" (M10 x 1.0 Bubble) (5 MIN)
3.99900 20.00 I 3.69100 18.45 I 3.19900 15.99
5 EA ✓

Brake Line Fittings - Adapters

Brake Line Adapters

Brake Line Adapters Brake Line Fittings

Tube nuts, unions, and adapters have uses across different types of automotive lines. Use a tube nut to create a connection by placing it over the brake line with the threads out to the side that will be flared. A union is for joining two lines together. Be sure to match the thread and flare of your connecting lines. Adapters are used to connect your line to the port if there is a difference. With adapters, match the female side to your brake line, and match the male side to the port connection. All styles available are sold individually so you can get exactly what you need.


  • Available: Tube nuts, Unions, & Adapters.
  • Fittings sold individually.
Item Description Price
1+ I Ext. Price I 5+ Ext. Price I I 10+ Ext. Price I
Qty in
Package 		In Stock Add to Cart
1239219 Brass Adapter, 1/4", Female (7/16-24 Inverted), Male (1/2-20 Inverted) (5 MIN)
5.00600 25.03 I 4.62 23.10 I 4.29 21.45
5 EA ✓
1239220 Brass Adapter, 3/16", Female (3/8-24 Inverted), Male (1/2-20 Inverted) (5 MIN)
4.70800 23.54 I 4.34600 21.73 I 4.03500 20.18
5 EA ✓
1239222 Brass Adapter, 3/16", Female (3/8-24 Inverted), Male (7/16-24 Inverted) (5 MIN)
2.77400 13.87 I 2.60800 13.04 I 2.18400 10.92
5 EA ✓
1239225 Brass Adapter, 1/4" Female (7/16-24 Inverted), Male (9/16-18 Inverted) (5 MIN)
4.19200 20.96 I 3.96400 19.82 I 3.30200 16.51
5 EA ✓
1239228 Brass Adapter, 3/16", Female (3/8-24 Inverted), Male (9/16-18 Inverted) (5 MIN)
4.19200 20.96 I 3.96400 19.82 I 3.30200 16.51
5 EA ✓
Prop65 Warning