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Product Summary

Universal Fit, Hardline Tube Nut Fitting Fitting Type

  • These 3/8"-24 inverted flare nuts are for use with 3/16" steel brake line
  • Brake line will need to be double 45 degree flared using a flare tool such as part number 91089525 or 72851535
  • Premium steel construction for use in high pressure brake line applications
  • Zinc plated for corrosion resistance
  • Sold in a bag of 5
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Key Specs

MFG. Part #91031820
Fitting TypeHardline Tube Nut Fitting
AngleStraight
Fitting End A3/8-24 I.F. Male
Fitting End B3/16 Tube
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Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 91031820 Details

Steel 3/8"-24 IFM thread nuts for 3/16" brake line when double flared to 45°.

 
Used in conjunction with Inverted Flare Fittings,  Pipe To Inverted Flare Fittings, and -AN to Inverted Flare Fittings.

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Speedway Motors 91031820 Specifications

KEY SPECS
MFG. Part #91031820
BrandSpeedway Motors
Fitting TypeHardline Tube Nut Fitting
AngleStraight
Fitting End A3/8-24 I.F. Male
Fitting End B3/16 Tube
Thread Pitch3/8"-24
Material TypeSteel
FinishZinc
GENERAL
Inside Diameter0.190"
ColorNatural
Sold in QuantityBag
NotesFor use with 3/16" mild steel brake line. Bag of (5).

Ratings & Reviews

4.8

50 Reviews

Overall Assessment

The product demonstrates high quality, as customers repeatedly praise its perfect fit, no-leak performance, and nice finish. Users are excited about the product’s applicability for varying vehicles, sharing satisfaction in using it for repairs and rebuilds, specifically for brake lines and transmission. The product is easy-to-use and reliable; customers are confident of its longevity, highlighting its sturdiness and material quality, even in comparison to local parts stores. Encouragingly, many customers mention intentions to purchase again in future. Its affordability was also noted favourably, with one customer stating great savings compared to their local parts store. The overall consensus confirms the product’s superior functionality and value-for-money, making it an outstanding choice against competitor's products.

4.8

50 reviews

5

44

4

4

3

1

2

0

1

1

Most Liked Positive Review

5.0

Awesome customer service

I used this product to run a new braking system on my 1967 toyota FJ project. I purchased a 25 foot roll of 3/16 brake line, a pack of 3/16 line clamps, and these line nuts. The products fit great and the customer service and shipping were easy fast, simple, and pleasant.

Most Liked Negative Review

3.0

Flare Nuts

The flaring nuts worked fine as a replacement since my original rusted beyond all recognition. If these rust out they will most likely not be able to be removed but for replacement they are ok. Only slightly more economical than my local auto supply.

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I would by this product again

5.0

7 months ago

Homer

Shepherdsville Ky

Verified

Worked just fine

Would Recommend

THE PRODUCT WORKS GREAT AND DOES EXACTLY WHAT IS NEEDS TO DO

5.0

8 months ago

POP AND DAUGHTER

LOS ANGELES, CA

Verified

WE HAVE BOUGHT SERVERAL ITEMS FROM SPEEDWAY AND THEY ARE PROVING TO BE GREAT PRODUCTS IN OUR CUSTOM BUILD FRAME UP VAN PROJECT, WE MATED OUR ORIGINAL FORD 77 TO ANOTHER 2008 VAN. WE'VE PURCHASED A CPP UNIHBK-SB Universal Hydroboost Hydraulic Power Brake Booster, GUAGES, BRAKE LINES AND THE FITTINGS AND THEY'VE ALL WORKED FLAWLESSLY. THANK YOU VERY MUCH POP 84 AND DAUGHTER 62

Would Recommend

NO PARTS YET

1.0

9 months ago

BOBO

SC

Verified

RACE CAR

Would Not Recommend

yes I buy the brake line parts at Speedway

5.0

a year ago

Aljay

Waddell az

Verified

They are good quality and the product works as intended

Would Recommend

Great fittings

5.0

a year ago

Gearman

Marion, Iowa

Verified

Used in the brake system of my '32 roadster

Would Recommend

I will buy more of these!

5.0

a year ago

The Hun

Western NY

Verified

The heads of these accept SAE/USA dimension tools, which is rare to find these days.

Would Recommend

All good

5.0

a year ago

Tbob

AZ

Verified

Used to make brake lines for new MC install, no leaks.

Would Recommend

Yes

5.0

2 years ago

Mac

Des Moines Iowa

Verified

Work as they should.

Would Recommend

Keep the Products coming.

5.0

2 years ago

MuscleofMetal

Central TX

Verified

Worked out great, installation was easy.

Would Recommend

Iwould buy this again

5.0

2 years ago

Lonnie

Sequim ,WA

Verified

as expected

Would Recommend

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