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Brass Pipe & DOT Fittings

Brass Pipe & DOT Fittings

A comprehensive selection of brass pipe fittings and DOT-approved air brake fittings for trucks, trailers, and heavy equipment. Chem Nut Supply stocks push-in fittings, compression fittings, pipe thread fittings, and air brake components in the sizes most commonly needed for fleet maintenance and repair. Shop individual fittings or complete assortment kits.

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61-8 1/2 Compression Union Nuts

Chem Nut Supply
$1.08 - $1.08
$1.08
$1.08 - $1.08
$1.08
In stock

61-8 Compression Union Nuts — 1/2"The 61-8 1/2" compression union nuts provide secure, leak-free connections in hydraulic and pneumatic systems wit...

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$1.08 - $1.08
$1.08
$1.08 - $1.08
$1.08

62-2 1/8 Compression Union

Chem Nut Supply
$3.20 - $3.20
$3.20
$3.20 - $3.20
$3.20
In stock

62-2 Compression Union — 1/8"The 62-2 1/8" compression union joins two tubes or pipes of equal diameter with a secure, leak-resistant compression s...

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$3.20 - $3.20
$3.20
$3.20 - $3.20
$3.20

62-3 3/16 Compression Union

Chem Nut Supply
$4.10 - $4.10
$4.10
$4.10 - $4.10
$4.10
In stock

62-3 Compression Union — 3/16"The 62-3 3/16" compression union delivers reliable fluid transfer in hydraulic and pneumatic systems with a secure co...

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$4.10 - $4.10
$4.10
$4.10 - $4.10
$4.10

62-4 1/4 Compression Union

Chem Nut Supply
$3.72 - $3.72
$3.72
$3.72 - $3.72
$3.72
In stock

62-4 Brass Compression Union — 1/4"The 62-4 1/4" brass compression union joins two copper or plastic pipes of equal diameter with a watertight comp...

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$3.72 - $3.72
$3.72
$3.72 - $3.72
$3.72

62-5 5/16 Compression Union

Chem Nut Supply
$4.53 - $4.53
$4.53
$4.53 - $4.53
$4.53
In stock

62-5 Compression Union — 5/16"The 62-5 5/16" compression union provides secure, leak-free connections in hydraulic and pneumatic systems with a com...

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$4.53 - $4.53
$4.53
$4.53 - $4.53
$4.53

62-6 3/8 Compression Union

Chem Nut Supply
$5.92 - $5.92
$5.92
$5.92 - $5.92
$5.92
In stock

62-6 Compression Union — 3/8"The 62-6 3/8" compression union delivers reliable, leak-free fluid transfer in hydraulic and pneumatic systems with du...

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$5.92 - $5.92
$5.92
$5.92 - $5.92
$5.92

62-8 1/2 Compression Union

Chem Nut Supply
$8.68 - $8.68
$8.68
$8.68 - $8.68
$8.68
In stock

62-8 Compression Union — 1/2"The 62-8 1/2" compression union joins two pipes of equal diameter with a secure, leak-resistant compression seal — no ...

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$8.68 - $8.68
$8.68
$8.68 - $8.68
$8.68

62-10 5/8 Compression Union

Chem Nut Supply
$6.67 - $6.67
$6.67
$6.67 - $6.67
$6.67
Low stock

62-10 Compression Union — 5/8"The 62-10 5/8" compression union delivers reliable, leak-resistant fluid transfer in hydraulic and pneumatic systems ...

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$6.67 - $6.67
$6.67
$6.67 - $6.67
$6.67

62-12 3/4 Compression Union

Chem Nut Supply
$7.25 - $7.25
$7.25
$7.25 - $7.25
$7.25
Low stock

62-12 Brass Compression Union — 3/4"The 62-12 3/4" brass compression union joins two sections of tubing or pipe with a watertight compression seal ...

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$7.25 - $7.25
$7.25
$7.25 - $7.25
$7.25

105-3S 3/16 Inv Flare Nut - Steel

Chem Nut Supply
$0.46 - $0.46
$0.46
$0.46 - $0.46
$0.46
In stock

105-3S Steel Inverted Flare Nut — 3/16"The 105-3S 3/16" steel inverted flare nut delivers a secure, leak-resistant seal on standard 3/16" tubing an...

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$0.46 - $0.46
$0.46
$0.46 - $0.46
$0.46

105L-3 3/16 Brake Nut long

Chem Nut Supply
$0.64 - $0.64
$0.64
$0.64 - $0.64
$0.64
In stock

105L-3 Long Brake Nut — 3/16"The 105L-3 3/16" long brake nut is precision-engineered for reliable performance in hydraulic and pneumatic brake syst...

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$0.64 - $0.64
$0.64
$0.64 - $0.64
$0.64

105-4S 1/4 Inv Flare Nut - Steel

Chem Nut Supply
$0.39 - $0.39
$0.39
$0.39 - $0.39
$0.39
In stock

105-4S Steel Inverted Flare Nut — 1/4"The 105-4S 1/4" steel inverted flare nut features precision-machined threads and durable steel construction f...

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$0.39 - $0.39
$0.39
$0.39 - $0.39
$0.39

105L-4 1/4 Inv Flare Nut Long - Steel

Chem Nut Supply
$1.36 - $1.36
$1.36
$1.36 - $1.36
$1.36
In stock

105L-4 Steel Inverted Flare Nut Long — 1/4"The 105L-4 1/4" long steel inverted flare nut features a long-body configuration for secure, leak-free c...

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$1.36 - $1.36
$1.36
$1.36 - $1.36
$1.36

105-5 5/16 Inv Flare Nut - Brass

Chem Nut Supply
$0.62 - $0.62
$0.62
$0.62 - $0.62
$0.62
In stock

105-5 Brass Inverted Flare Nut — 5/16"The 105-5 5/16" brass inverted flare nut delivers superior holding power and a secure, leak-resistant seal fo...

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$0.62 - $0.62
$0.62
$0.62 - $0.62
$0.62

105-5S 5/16 Inv Flare Nut - Steel

Chem Nut Supply
$0.75 - $0.75
$0.75
$0.75 - $0.75
$0.75
In stock

105-5S Steel Inverted Flare Nut — 5/16"The 105-5S 5/16" steel inverted flare nut is crafted from durable steel for reliable high-pressure connectio...

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$0.75 - $0.75
$0.75
$0.75 - $0.75
$0.75

105-6 3/8 Brass Brake Nut

Chem Nut Supply
$1.15 - $1.15
$1.15
$1.15 - $1.15
$1.15
In stock

105-6 Brass Brake Nut — 3/8"The 105-6 3/8" brass brake nut is precision-engineered for reliable hydraulic and pneumatic brake system assembly with ...

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$1.15 - $1.15
$1.15
$1.15 - $1.15
$1.15

105-6S 3/8 Inv Flare Nut - Steel

Chem Nut Supply
$1.16 - $1.16
$1.16
$1.16 - $1.16
$1.16
In stock

105-6S Steel Inverted Flare Nut — 3/8"The 105-6S 3/8" steel inverted flare nut delivers precise fit and secure sealing in demanding hydraulic and p...

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$1.16 - $1.16
$1.16
$1.16 - $1.16
$1.16

300-3 3/16 Brake Union

Chem Nut Supply
$1.57 - $1.57
$1.57
$1.57 - $1.57
$1.57
In stock

300-3 Brake Union — 3/16"The 300-3 3/16" brake union delivers secure, leak-free hydraulic line connections for automotive braking systems with reli...

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$1.57 - $1.57
$1.57
$1.57 - $1.57
$1.57

300-4 1/4 Brake Union

Chem Nut Supply
$1.71 - $1.71
$1.71
$1.71 - $1.71
$1.71
In stock

300-4 Brake Union — 1/4"The 300-4 1/4" brake union is built to OEM standards for secure, leak-free hydraulic line connections in automotive braking...

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$1.71 - $1.71
$1.71
$1.71 - $1.71
$1.71

300-5 5/16 Brake Union

Chem Nut Supply
$2.25 - $2.25
$2.25
$2.25 - $2.25
$2.25
In stock

300-5 Brake Union — 5/16"The 300-5 5/16" brake union accommodates standard brake system tubing with a secure, leak-resistant seal for reliable hydr...

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$2.25 - $2.25
$2.25
$2.25 - $2.25
$2.25

300-6 3/8 Brake Union

Chem Nut Supply
$2.74 - $2.74
$2.74
$2.74 - $2.74
$2.74
In stock

300-6 Brake Union — 3/8"The 300-6 3/8" brake union delivers secure, leak-free hydraulic connections in automotive and industrial braking systems wi...

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$2.74 - $2.74
$2.74
$2.74 - $2.74
$2.74

210-34 Male Adapter 3/16 Tube 1/4 Male

Chem Nut Supply
$2.12 - $2.12
$2.12
$2.12 - $2.12
$2.12
In stock

210-34 Male Adapter — 3/16" Tube x 1/4" MaleThe 210-34 male adapter connects 3/16" tubing to 1/4" male ports with reliable, leak-resistant performa...

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$2.12 - $2.12
$2.12
$2.12 - $2.12
$2.12
Save 39% Save %

210-35 Male Adapter 3/16 Tube 5/16 Male

Chem Nut Supply
$2.54
$2.54 - $2.54
$2.54
$1.54
$1.54 - $1.54
$1.54
In stock

210-35 Brass Male Adapter — 3/16" Tube x 5/16" MaleThe 210-35 brass male adapter connects 3/16" tube inlets to 5/16" male thread outlets for reliab...

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$2.54
$2.54 - $2.54
$2.54
$1.54
$1.54 - $1.54
$1.54
Save 39% Save %

210-56 3/8-5/16 Inverted Seat to Inverted Male Adapter

Chem Nut Supply
$3.85 - $3.85
$3.85
$3.85 - $3.85
$3.85
Low stock

210-56 Inverted Seat to Inverted Male Adapter — 3/8" x 5/16"The 210-56 adapter enables reliable fluid transfer between 3/8" inverted seat and 5/16"...

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$3.85 - $3.85
$3.85
$3.85 - $3.85
$3.85