Back to Air Valves & Manifolds
Browse
AIR BRAKE & WHEEL View all
Browse AIR BRAKE & WHEEL
AIR BRAKE & WHEEL View all
Steel Inverted Flare Nut - 3/8in SAE Air Brake Line Fitting - Replaces Tectran S141-6 Tramec S41IFS-6 177.87416-S
Steel Inverted Flare Nut - 3/8in SAE Air Brake Line Fitting - Replaces Tectran S141-6 Tramec S41IFS-6 177.87416-S
Automann

Steel Inverted Flare Nut - 3/8in SAE Air Brake Line Fitting - Replaces Tectran S141-6 Tramec S41IFS-6 177.87416-S

In stock
SKU: 177.87416-S
$0.53
  • Ships same dayOn in-stock orders
  • 30-day money-backShop with confidence
  • Secure checkoutEncrypted payment
We acceptAmazon American Express Apple Pay Diners Club Discover Google Pay Mastercard Shop Pay Visa

If you have a large order and would like to get a discount, please fill out this form.

Fitment

Fits these trucks

Universal - air brake systemsAir-brake and air-line connections on trucks, tractors and trailers3/8in SAE inverted flare tube joints
Always confirm your year, make & model before ordering.
Part numbers

OEM & interchange numbers

5 cross-refs
Tectran S141-6 Tectran S1416 Tramec S41IFS-6 Tramec S41IFS6 105X6
Direct 1-to-1 replacement for every number above. Tap any number to copy.
Overview

The nut is the part that gets rounded off, stripped or left behind, and a tube is useless without it. This Steel Inverted Flare Nut distributed by FleetPro Parts & Tires is the 3/8in SAE inverted flare nut that clamps a flared tube into its seat on truck and trailer air-brake and air-line connections. A nut that will not pull up - because the threads are chewed, the hex is rounded, or somebody substituted the wrong size - leaves a joint that seeps every time the system charges, and a seeping joint is the slow leak nobody finds until the truck will not build pressure. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel repair shops, and owner-operators nationwide.

A Nut That Backs Off Again: The 3/8in SAE Inverted Flare Nut Advantage

This nut is steel, not brass, and that is the point of the part. Steel takes the wrench without the hex corners deforming, so the nut can be pulled up to a real seat and backed off again at the next repair instead of rounding on the first pass. The 3/8in SAE inverted flare form is the standard on heavy-truck air lines: the nut drives the flared tube end into the matching inverted seat and the metal-to-metal cone does the sealing, with no thread sealant, no O-ring and nothing to age out.

Keep a few in the box - the nut costs almost nothing and the tube it saves does not. This Automann fitting is a direct replacement for highly searched industry numbers including Tectran S141-6, Tramec S41IFS-6 and 105X6, and it supersedes Automann 177.87416S.

Vehicle Fitment & Compatibility

This steel air-line fitting uses a universal design intended for the following commercial applications:

  • Make/Model: Universal - Class 8 tractors and trailers
  • System: Air brake systems; air-brake and air-line connections on trucks, tractors and trailers
  • Connection: 3/8in SAE inverted flare
  • Component Group: Air Brake & Wheel / Air System Manifolds & Valves

Direct Replacement & Cross-Reference Numbers:

This Automann flare nut serves as a direct replacement for the following part numbers:

  • Tectran Interchange: S141-6, S1416
  • Tramec Interchange: S41IFS-6, S41IFS6
  • Additional Interchange: 105X6
  • Automann Supersedes: 177.87416S
  • Automann Distributor #: 177.87416-S

Technical Specifications

  • Component Type: Inverted flare nut
  • Size: 3/8in SAE inverted flare
  • Material: Steel
  • Application: Universal - air brake systems
  • Warranty: 1-Year FleetPro Warranty
  • UPC: 889626761959
  • Product Level: Fleet Standard Aftermarket
  • Brand: Automann (Distributed by FleetPro Parts & Tires)
Key features
  • Steel Hex Holds Up: Steel takes the wrench without the corners deforming, so the nut pulls up to a real seat and backs off again instead of rounding on the first pass.
  • Standard 3/8in SAE Inverted Flare: The common heavy-truck air line form, so it matches the seat already on the vehicle.
  • Metal-to-Metal Seal: The flared cone does the sealing, with no thread sealant, no O-ring and nothing to age out.
  • Cheap Insurance: A rounded or missing nut scraps an otherwise good tube, so a spare in the box saves the line.
  • Wide Interchange: Covers Tectran S141-6, Tramec S41IFS-6 and 105X6 from one part number.
Specifications
Component Type
Inverted flare nut
Size
3/8in SAE inverted flare
Material
Steel
Application
Universal - air brake systems
Supersedes
177.87416S
Condition
New
Warranty
1-Year FleetPro Warranty
UPC
889626761959
Product Level
Fleet Standard Aftermarket
Questions
Will this fit my truck?
This part fits Universal - air brake systems, Air-brake and air-line connections on trucks, tractors and trailers, 3/8in SAE inverted flare tube joints. Always confirm your year, make and model before ordering.
What part numbers does it replace?
Yes. It is a direct replacement that interchanges with Tectran S141-6, Tectran S1416, Tramec S41IFS-6, Tramec S41IFS6, 105X6.
How fast does it ship?
In-stock orders placed before 12 PM Central on business days ship the same day from our Hanover Park, IL warehouse, and typically arrive in 2 to 5 business days anywhere in the USA.
What's your return policy?
Unused items in original packaging can be returned within 30 days, backed by our 30-day money-back guarantee. If we ship the wrong part, we cover the return label and send the correct one.