• 33mm Torque-Tight
  • 33mm Torque-Tight™
  • 33mm Torque-Tight™
1 15

Torque-Tight

33mm (1-5/16") Torque-Tight

$12.00 USD
$12.00 USD
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IND33MM-ORN-10

33mm Torque-Tight Loose Lug Nut Indicators

  • Fits all 33mm truck and trailer lug nuts
  • Installs by hand in seconds
  • UV-stable LDPE, engineered for harsh outdoor environments
  • Heat-stable material designed for high brake and hub temperature cycles
  • Instant visual detection during pre-trip and PM inspections

What Are Lug Nut Indicators?

Lug nut indicators, sometimes called wheel nut indicators, are small injection-molded pieces that press onto each lug nut. Their purpose is simple: show a driver or technician whether a nut has rotated during operation. Any movement is a sign of loosening, which can lead to wheel loss and serious safety risks.

How Torque-Tight Indicators Work

The 24-point design creates a precise interference fit over the lug nut’s hex head. The indicators stay firmly in place through vibration, weather, and heat but can still be installed or removed by hand.

Most fleets point indicators clockwise. If a nut begins backing off, the indicator rotates toward the outside of the wheel, making the issue easy to spot during walkarounds.

Why 33mm Is the Correct Size for Most Heavy Trucks

33mm is the standard lug nut size used on nearly every Class 8 tractor and commercial trailer in the United States, Canada, and Mexico.

33mm vs 22mm: Avoiding the Common Mix-Up

M22x1.5 refers to the stud size. The nut that threads on has a 33mm hex head—so 33mm is the correct indicator for almost every heavy truck.

How To Confirm Your Size

Use a socket. If a 33mm or 1-5/16" socket fits your lug nuts, these indicators are the correct size.

Size Guide

  • Kenworth, Peterbilt, Freightliner, International
  • Mack, Volvo, Western Star
  • Most hub-piloted commercial trailers
  • Any M22x1.5 stud with a 33mm hex nut

Built for DOT & FMCSA Walkaround Inspections

Torque-Tight indicators provide an instant visual check during pre-trip inspections, supporting fleet compliance with FMCSA 392.7 and standard walkaround procedures.

Pack Size Guide

Pack Size Recommended Use
10 piece Single truck or test fit
100 piece Standard axle sets or small fleet needs
1000 piece Fleet rollout
4000 piece Large fleet implementation and stocking

 

Specifications

  • Indicator size: 33mm
  • Material: LDPE (low-density polyethylene)
  • Color: UV Stable
  • Thickness: 1/8 inch
  • Design: 24-point pressed-fit pattern
  • Temperature resistance: −40°F to over 250°F
  • Warranty: 2 years
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Why Fleets Choose Torque-Tight

  • Made in the USA with consistent molding quality
  • Injection-molded for precise fit and long life
  • Color is molded through the part, never painted
  • UV-stable polyethylene resists fading and cracking
  • 1/8 inch thick for durability and secure fit
  • Two-year warranty

How Drivers & Technicians Use Them

  1. Install all indicators pointing the same direction.
  2. During pre-trip, look for any indicator rotated outward.
  3. Any rotation indicates a lug nut requiring immediate service.

Temperature & Environment Performance

Torque-Tight indicators are molded from a high-performance LDPE resin designed for long-term outdoor use. The material remains stable across brake heat cycles, winter cold, UV exposure, and chemical contact.

  • Operating environment: −40°F to over 250°F
  • Short-duration heat tolerance well above typical brake drum temperatures
  • UV-stable colorant prevents fading
  • Resistant to oils, grease, salt, and de-icer chemicals

Why We Don’t Use Biodegradable Plastics

Some indicator brands use biodegradable or oxo-degradable plastics. These materials are not recommended for heavy truck environments because they can lose strength when exposed to sunlight, heat, vibration, and road chemicals.

A wheel-end safety device should not degrade outdoors. Torque-Tight indicators use an engineering-grade LDPE chosen for durability, long service life, and consistent performance.

Fleet / Bulk Ordering Information

  • Bulk pricing & custom colors available for 5,000+ piece orders
  • Packing options for axle sets, small fleets, and full fleet deployment
  • W9 available on request
  • Purchase orders accepted for approved accounts

Let customers speak for us

from 19 reviews
Very fast delivery

Very fast delivery helped us get our customer their trailer back sooner than
we predicted.

Marty Nussbaum
1" Torque-Tight
1" Torque-Tight
Excellent customer service

They went above and beyond to assure my order went out same day for overnight delivery. Super friendly and helpful!!

Anonymous
33mm (1-5/16") Torque-Tight
33mm (1-5/16") Torque-Tight
Works as expected

Works as expected. No complaints.

Anonymous
21mm Torque-Tight
21mm Torque-Tight
Good idea

That's a great idea, who would ever think something so small could be so valuable

Herman
22mm (7/8") Torque-Tight
22mm (7/8") Torque-Tight
Perfect

Easy to install, simple, and quick. Best way to save thousands of dollars in tires.

Kevin Krentz
4-Pack Skid-Stopper Trailer Wheel Skid Indicators with M22x1.5 Jam Nuts
4-Pack Skid-Stopper Trailer Wheel Skid Indicators with M22x1.5 Jam Nuts
Black replacement

Thanks for finding the black torque tight flags. I had bought the whole set for my bus conversion and lost or (?) one, thanks again tom...

Tom Vannozzi
1-1/2" (38mm) Torque-Tight
1-1/2" (38mm) Torque-Tight
great product

We use these on f 550 and they are the only loose wheel indicators that we have found that we can still check torque on the lug nuts without removing the indicators. And they stay on no matter what kind of areas we drive through.

cris Kendrick
21mm Torque-Tight
21mm Torque-Tight
Fast

Super fast shipping...item as describe...thanks

Cesar Chavez
4-Pack Skid-Stopper Trailer Wheel Skid Indicators with M22x1.5 Jam Nuts
4-Pack Skid-Stopper Trailer Wheel Skid Indicators with M22x1.5 Jam Nuts

They do what they are intended to do!

Jim Brock
33mm (1-5/16") Torque-Tight
33mm (1-5/16") Torque-Tight
Work as Intended

Easy application, easiest thing I purchased for my mechanic to do.

Keith Lester
4-Pack Skid-Stopper Trailer Wheel Skid Indicators with M22x1.5 Jam Nuts
4-Pack Skid-Stopper Trailer Wheel Skid Indicators with M22x1.5 Jam Nuts

QUICK SHIPPING AND QUALITY FIT

Patrick Alford
33mm (1-5/16") Torque-Tight
33mm (1-5/16") Torque-Tight

22mm (7/8") Torque-Tight™

SHAWN RILEY
22mm (7/8") Torque-Tight
22mm (7/8") Torque-Tight
Perfect Service

Excelent service !

Luis Rivera
33mm (1-5/16") Torque-Tight
33mm (1-5/16") Torque-Tight
Lug Nut Indicators

Easy to use, fit perfectly, and the best part - everyone on my team loved the idea of using them right away. They made their life easier (less crouching) and safer.

Fast shipping, good price, and made in USA, I'll definitely keep buying from Torque-Tight for my fleet!

Jeff T.
33mm (1-5/16") Torque-Tight
33mm (1-5/16") Torque-Tight

Excelente producto y servicio

Luis Rivera
21mm Torque-Tight
21mm Torque-Tight