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NPT-to-NPT Straight Coupling 3/8 in End B Diameter Threaded Fittings

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    • 3/8" 150 Female (NPT) Full Coupling 304 Stainless Steel Coupler SS050341304 - Image 1 of 4
    • 3/8" 150 Female (NPT) Full Coupling 304 Stainless Steel Coupler SS050341304 - Image 2 of 4
    • 3/8" 150 Female (NPT) Full Coupling 304 Stainless Steel Coupler SS050341304 - Image 3 of 4
    • 3/8" 150 Female (NPT) Full Coupling 304 Stainless Steel Coupler SS050341304 - Image 4 of 4

    3/8" 150 Female (NPT) Full Coupling 304 Stainless Steel Coupler SS050341304

    Brand New
    $8.95
    Free shipping
    589 sold
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  • 33250-06-06 3/8" Brass Female Pipe Union NPT - Image 1 of 1

    33250-06-06 3/8" Brass Female Pipe Union NPT

    $13.50
    Free shipping
    Only 1 left!
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    • 3/4” X 3/8” NPT Female Coupling 304 Stainless Coupler *Lot Of 14* Unused Surplus - Image 1 of 4
    • 3/4” X 3/8” NPT Female Coupling 304 Stainless Coupler *Lot Of 14* Unused Surplus - Image 2 of 4
    • 3/4” X 3/8” NPT Female Coupling 304 Stainless Coupler *Lot Of 14* Unused Surplus - Image 3 of 4
    • 3/4” X 3/8” NPT Female Coupling 304 Stainless Coupler *Lot Of 14* Unused Surplus - Image 4 of 4

    3/4” X 3/8” NPT Female Coupling 304 Stainless Coupler *Lot Of 14* Unused Surplus

    $76.46
    or Best Offer
    $11.95 shipping
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    • Qty (10) Parker 222P-6-4 Brass Reducing Adapter 3/8” FNPT To 1/4” MNPT, USA - Image 1 of 4
    • Qty (10) Parker 222P-6-4 Brass Reducing Adapter 3/8” FNPT To 1/4” MNPT, USA - Image 2 of 4
    • Qty (10) Parker 222P-6-4 Brass Reducing Adapter 3/8” FNPT To 1/4” MNPT, USA - Image 3 of 4
    • Qty (10) Parker 222P-6-4 Brass Reducing Adapter 3/8” FNPT To 1/4” MNPT, USA - Image 4 of 4

    Qty (10) Parker 222P-6-4 Brass Reducing Adapter 3/8” FNPT To 1/4” MNPT, USA

    $29.95
    Free shipping
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  • Banjo Threaded Polypropylene Pipe Coupling, 3/8" NPT Female - CPLG038 - Image 1 of 4

    Banjo Threaded Polypropylene Pipe Coupling, 3/8" NPT Female - CPLG038

    Brand New
    $8.99
    Free shipping
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  • FITOK 316 SS Hex Coupling 3/8 Female NPT, 5300 psi, SS-PCG-NS6 - Image 1 of 2

    FITOK 316 SS Hex Coupling 3/8 Female NPT, 5300 psi, SS-PCG-NS6

    Brand New
    $14.59
    Free shipping
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  • 2-Pk Brass Fitting 3/8 Flare Male x 3/8 Flare FIP Thread Tube Adapter - Image 1 of 2

    2-Pk Brass Fitting 3/8 Flare Male x 3/8 Flare FIP Thread Tube Adapter

    $14.95
    or Best Offer
    Free shipping
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  • Turned 316 Stainless Steel Pipe Reducer Female 1-1/2" NPT to Female 3/8" NPT - Image 1 of 1

    Turned 316 Stainless Steel Pipe Reducer Female 1-1/2" NPT to Female 3/8" NPT

    $15.00
    Free shipping
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  • ASP 304 Stainless Steel Pipe Union Class 1M Female 3/8" NPT to Female 3/8" NPT - Image 1 of 2

    ASP 304 Stainless Steel Pipe Union Class 1M Female 3/8" NPT to Female 3/8" NPT

    $15.00
    Free shipping
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  • EVERBILT LFA-177 3/8 in. Threaded Flare x 1/2 FIP Brass Adapter Coupling Fitting - Image 1 of 4

    EVERBILT LFA-177 3/8 in. Threaded Flare x 1/2 FIP Brass Adapter Coupling Fitting

    Brand New
    $9.95
    Free shipping
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  • 3/8" 3000 (3M) Female (NPT) Full Coupling 304 Stainless Steel SS050321304 - Image 1 of 4

    3/8" 3000 (3M) Female (NPT) Full Coupling 304 Stainless Steel SS050321304

    Brand New
    $10.54
    Free shipping
    50 sold
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  • SS-443 316 Stainless Steel Pipe Reducer Female 1-1/2" NPT to Female 3/8" NPT - Image 1 of 1

    SS-443 316 Stainless Steel Pipe Reducer Female 1-1/2" NPT to Female 3/8" NPT

    $10.50
    Free shipping
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  • THREADED STEEL CLOSE NIPPLE 3/8" NPT 1" LONG LOT OF 3 NNB - Image 1 of 4

    THREADED STEEL CLOSE NIPPLE 3/8" NPT 1" LONG LOT OF 3 NNB

    $11.97
    or Best Offer
    Free shipping
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  • Qty(20) Plumbing coupling fitting 1/8"NPT Female x 1/8"NPT Female. NPT-t-NPT - Image 1 of 4

    Qty(20) Plumbing coupling fitting 1/8"NPT Female x 1/8"NPT Female. NPT-t-NPT

    Brand New
    $44.08
    Was: $48.98was - US $48.98
    Free shipping
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  • Stainless Steel 304 Fitting Reducing Coupling Class 150 1/2" X 3/8"... - Image 1 of 2

    Stainless Steel 304 Fitting Reducing Coupling Class 150 1/2" X 3/8"...

    Brand New
    $6.09
    $4.59 shipping
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  • 3/8" 3000 (3M) Threaded (NPT) Full Coupling A105 Forged Steel FS050321 - Image 1 of 4

    3/8" 3000 (3M) Threaded (NPT) Full Coupling A105 Forged Steel FS050321

    Brand New · Unbranded
    $9.38
    Free shipping
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  • 3/4" to 3/8” Female NPT Threaded Reducer Reducing Coupling Stainless Socket - Image 1 of 4

    3/4" to 3/8” Female NPT Threaded Reducer Reducing Coupling Stainless Socket

    $2.50
    $8.75 shipping
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  • Lot of 13, 3/8" NPT, Female 3-Piece Brass Pipe Union Couplings - Image 1 of 3

    Lot of 13, 3/8" NPT, Female 3-Piece Brass Pipe Union Couplings

    $59.95
    $8.75 shipping
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  • Stainless Steel 316 Fitting Reducing Coupling Class 150 1-1/2" X 3/8" NPT - Image 1 of 2

    Stainless Steel 316 Fitting Reducing Coupling Class 150 1-1/2" X 3/8" NPT

    Brand New
    $13.90
    $7.90 shipping
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  • 3/8" Galvanized Coupler NPT - Image 1 of 1

    3/8" Galvanized Coupler NPT

    Brand New
    $3.24
    $4.80 shipping
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  • Stainless Steel 316 Fitting Reducing Coupling Class 150 1-1/4" X 3/8" NPT - Image 1 of 2

    Stainless Steel 316 Fitting Reducing Coupling Class 150 1-1/4" X 3/8" NPT

    Brand New
    $10.90
    $7.90 shipping
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  • LOT OF 4 Full Coupling 3/8"NPT female 304 Stainless Steel Coupler 3/8 in. FNPT - Image 1 of 3

    LOT OF 4 Full Coupling 3/8"NPT female 304 Stainless Steel Coupler 3/8 in. FNPT

    Brand New
    $12.00
    $5.02 shipping
    ⁣5⁣⁣⁣⁣⁣D⁣⁣⁣ ⁣⁣X⁣E⁣⁣ ⁣⁣8⁣O⁣ ⁣K⁣A⁣ ⁣H⁣⁣R⁣ ⁣B⁣⁣
  • 3/8" Threaded Union 304 Stainless Steel - Image 1 of 4

    3/8" Threaded Union 304 Stainless Steel

    Brand New · Unbranded
    $6.35
    $4.80 shipping
    W⁣⁣H⁣ ⁣⁣E⁣⁣F⁣⁣⁣ ⁣H⁣⁣F⁣ ⁣4⁣0⁣ ⁣D⁣5⁣⁣⁣⁣⁣ ⁣⁣⁣ ⁣
  • Stainless Steel 304 Fitting Reducing Coupling Class 150 1-1/4" X 3/8“ Female NPT - Image 1 of 2

    Stainless Steel 304 Fitting Reducing Coupling Class 150 1-1/4" X 3/8“ Female NPT

    Brand New
    $9.90
    $7.95 shipping
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  • 1/2” X 3/8” NPT Female Coupling 304 Stainless Coupler *Lot Of 10* Unused Surplus - Image 1 of 4

    1/2” X 3/8” NPT Female Coupling 304 Stainless Coupler *Lot Of 10* Unused Surplus

    $59.46
    or Best Offer
    $11.95 shipping
    ⁣5⁣⁣⁣⁣Q⁣ ⁣⁣⁣⁣⁣V⁣F⁣⁣⁣ ⁣⁣T⁣X⁣ ⁣7⁣H⁣ ⁣⁣⁣R⁣G⁣⁣
  • Stainless Steel 316 Fitting Reducing Coupling Class 150 3/4" X 3/8" NPT - Image 1 of 2

    Stainless Steel 316 Fitting Reducing Coupling Class 150 3/4" X 3/8" NPT

    Brand New
    $7.19
    $4.59 shipping
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  • 1/4 FNPT x 3/8 FNPT 316ss Hex Reducing Coupling Cajon Swagelok SS-6-HRCG-4 - Image 1 of 1

    1/4 FNPT x 3/8 FNPT 316ss Hex Reducing Coupling Cajon Swagelok SS-6-HRCG-4

    Brand New · Swagelok
    $17.60
    Was: $22.00was - US $22.00
    $4.80 shipping
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  • FITOK 316 SS Hex Reducing Coupling 1/2 × 3/8 FNPT, 4900 psi, SS-PCG-NS8-NS6 - Image 1 of 2

    FITOK 316 SS Hex Reducing Coupling 1/2 × 3/8 FNPT, 4900 psi, SS-PCG-NS8-NS6

    Brand New
    $17.52
    Free shipping
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  • 2 NEW Swagelok SS-6-HCG, 316SS Hex Straight Coupling, 3/8" NPT TO 3/8 NPT Female - Image 1 of 3

    2 NEW Swagelok SS-6-HCG, 316SS Hex Straight Coupling, 3/8" NPT TO 3/8 NPT Female

    $24.95
    $9.30 shipping
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  • Stainless Steel 304 Fitting Reducing Coupling Class 150 1" X 3/8"... - Image 1 of 2

    Stainless Steel 304 Fitting Reducing Coupling Class 150 1" X 3/8"...

    Brand New
    $8.19
    $6.59 shipping
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  • Stainless Steel 304 Fitting Reducing Coupling Class 150 3/4" X 3/8" Female NPT - Image 1 of 2

    Stainless Steel 304 Fitting Reducing Coupling Class 150 3/4" X 3/8" Female NPT

    Brand New
    $6.90
    $4.59 shipping
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  • Stainless Steel 304 Fitting 3/8" Inch Full Coupling Class 150 Heavy Duty - Image 1 of 1

    Stainless Steel 304 Fitting 3/8" Inch Full Coupling Class 150 Heavy Duty

    Brand New
    $5.39
    $4.59 shipping
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  • Stainless Steel 316 Fitting Reducing Coupling Class 150 2" X 3/8" NPT - Image 1 of 2

    Stainless Steel 316 Fitting Reducing Coupling Class 150 2" X 3/8" NPT

    Brand New
    $21.90
    $8.90 shipping
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  • 1/2 FPT x 3/8 FPT, Heavy Duty Brass Reducing Coupling - New - Image 1 of 4

    1/2 FPT x 3/8 FPT, Heavy Duty Brass Reducing Coupling - New

    Brand New · Swagelok
    $7.00
    or Best Offer
    $8.75 shipping
    ⁣⁣E⁣⁣⁣⁣⁣⁣⁣Z⁣ ⁣3⁣⁣⁣⁣⁣J⁣⁣ ⁣W⁣⁣A⁣⁣ ⁣3⁣W⁣ ⁣⁣
  • Stainless Steel 304 Fitting Reducing Coupling Class 150 2" X 3/8" Female NPT - Image 1 of 2

    Stainless Steel 304 Fitting Reducing Coupling Class 150 2" X 3/8" Female NPT

    Brand New
    $18.90
    $8.90 shipping
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  • Stainless Steel 316 Fitting 3/8" Inch Full Coupling Class 150 Heavy Duty - Image 1 of 1

    Stainless Steel 316 Fitting 3/8" Inch Full Coupling Class 150 Heavy Duty

    Brand New
    $5.89
    $4.69 shipping
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  • STRAIGHT BRASS FITTING (3/8” NPTF, .455" ID, .670” DIA., 1.04” LG.) X111H - Image 1 of 4

    STRAIGHT BRASS FITTING (3/8” NPTF, .455" ID, .670” DIA., 1.04” LG.) X111H

    $8.99
    or Best Offer
    $5.00 shipping
    ⁣F⁣J⁣ ⁣⁣⁣V⁣⁣4⁣⁣⁣⁣ ⁣⁣B⁣⁣H⁣⁣⁣⁣ ⁣Y⁣4⁣⁣⁣ ⁣⁣⁣
  • 3/8" FPT x 1/4" MPT Reducing Adapter, Parker 222P-6-4 - Lot of 5, New - Image 1 of 4

    3/8" FPT x 1/4" MPT Reducing Adapter, Parker 222P-6-4 - Lot of 5, New

    Brand New · Parker
    $12.00
    or Best Offer
    $11.95 shipping
    ⁣⁣⁣T⁣R⁣ ⁣L⁣2⁣⁣ ⁣⁣Q⁣⁣M⁣⁣⁣⁣ ⁣⁣⁣⁣M⁣0⁣ ⁣⁣1⁣⁣⁣
  • Reducer Pipe Adapter 1/2 Female Npt to 3/8 Male Npt Brass Fitting Water Air Gas - Image 1 of 2

    Reducer Pipe Adapter 1/2 Female Npt to 3/8 Male Npt Brass Fitting Water Air Gas

    Brand New · Unbranded
    $15.00
    or Best Offer
    $7.60 shipping
    J⁣9⁣⁣⁣ ⁣⁣M⁣F⁣ ⁣0⁣⁣⁣⁣0⁣ ⁣3⁣⁣⁣N⁣ ⁣⁣Z⁣N⁣⁣ ⁣⁣⁣⁣
  • (Ships Fast) 3/8" NPT Female Full Coupling | 3000 (3M) 304 Stainless Steel - Image 1 of 3

    (Ships Fast) 3/8" NPT Female Full Coupling | 3000 (3M) 304 Stainless Steel

    Brand New
    $12.95
    Free shipping
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  • 10 Piece Package SWAGELOK Equivalent to SS-6-HRCG-4, 1/4" FNPT x 3/8" FNPT - Image 1 of 1

    10 Piece Package SWAGELOK Equivalent to SS-6-HRCG-4, 1/4" FNPT x 3/8" FNPT

    Brand New
    $130.00
    or Best Offer
    Free shipping
    S⁣S⁣ ⁣⁣⁣N⁣⁣⁣G⁣⁣ ⁣6⁣⁣⁣⁣M⁣⁣⁣⁣⁣⁣⁣⁣ ⁣K⁣⁣⁣⁣
  • 1/2 FNPT X 3/8 FNPT Adapter / Union - Image 1 of 3

    1/2 FNPT X 3/8 FNPT Adapter / Union

    Brand New
    $15.79
    $18.11 shipping
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  • Stainless Steel 304 Fitting Reducing Coupling Class 150 1-1/2" X 3/8" Female NPT - Image 1 of 2

    Stainless Steel 304 Fitting Reducing Coupling Class 150 1-1/2" X 3/8" Female NPT

    Brand New
    $11.90
    $7.95 shipping
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