1/4" Metric Thread Brake Line Nuts and Fittings

You must know the proper tubing size for your application first!

You must use the same tube size that came installed on your vehicle.

All the nuts on this page are for 1/4" brake lines.

Displaying products 1 - 7 of 7 results
M8-4 - 12mm x 1.0 male steel nut with non-threaded lead - SAE flare or DIN flare
12mm x 1.0 male steel brake line tubing nut with non-threaded lead - SAE flare or DIN flare
Price: $3.50
M8-4 - 12mm x 1.0 male steel nut with non-threaded lead - SAE flare or DIN flare
12mm x 1.0 male steel nut with non-threaded lead, 20mm long overall Found on: Bosch ABS units, European trucks, Unimogs, etc. This nut works with both SAE (45 degree inverted/double) and DIN (bubble/ISO) flares Use with 1/4" brake line
#16 Nut Pack - 6 each of M8-4
M8-4 brake line nut pack
MSRP: $21.00
Price: $10.50
You Save: $10.50
#16 Nut Pack - 6 each of M8-4
6 pack of M8-4 12mm x 1.0 male steel nut with non-threaded lead, 20mm long These nuts work with both SAE (45 degree inverted/double) and DIN (bubble/ISO) flares Use with 1/4" tubing
M12-4 - 14mm x 1.5 male steel nut with non threaded lead - DIN flare
14mm x 1.5 male steel brake line tubing nut with non threaded lead - DIN flare
Price: $7.00
M12-4 - 14mm x 1.5 male steel nut with non threaded lead - DIN flare
14mm x 1.5 male steel nut with non threaded lead, 21mm long overall DIN flare (bubble/ISO) Late model domestic cars Use with 1/4" brake line
M15-4 - 12mm x 1.0 female nut - SAE flare
12mm x 1.0 female brake line nut - SAE flare
Price: $8.00
M15-4 - 12mm x 1.0 female nut - SAE flare
12mm x 1.0 female 20mm overall SAE flare (45 degree inverted/double) Use with 1/4" brake line
UM20-4 - 12mm x 1.0 female union - SAE flare
12mm x 1.0,  female brake line union - SAE flare
Price: $16.00
UM20-4 - 12mm x 1.0 female union - SAE flare
Union 12mm x 1.0, female union, 29mm long overall SAE flare (45 degree inverted/double) Use with 1/4"
TM20-4br - 3 way Tee - 12mm x 1.0 female tee - brass - SAE flare
3 way Tee - 12mm x 1.0 female brake line tee - brass - SAE flare
Price: $28.00
TM20-4br - 3 way Tee - 12mm x 1.0 female tee - brass - SAE flare
3 way Tee 12mm x 1.0, 29mm long overall 3 way female tee SAE flare (45 degree inverted/double) This tee is brass Use with 1/4" brake line
#21 Nut Assortment
Master metric brake line fittings asst. for 3/16” & 1/4” brake line
MSRP: $187.10
Price: $93.55
You Save: $93.55
#21 Nut Assortment
Master metric nut asst. for 3/16”/4.75mm & 1/4” brake line 56 pieces

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