Permatex

Medium Strength Threadlocker Blue

Blue (24200) · US · not yet reviewed

Check your container: This countdown is for the Blue (24200) variant. Similar-looking versions may have different times.

How long does Permatex Medium Strength Threadlocker Blue take to dry?

Short answer

Set / hardened: 20 minutes after application.
Full cure: 1 day after application.
Do not load critical fasteners until the full-cure time has passed.
Used for automotive parts and fasteners, load-bearing bonds: elapsed time alone can’t confirm it’s ready. Inspect or test before loading.
Adhesive & glue

Bond-strength path

Assembly, handling and full load are different stages

1 · AssembleClean, fit and apply the Blue (24200) version correctly.
2 · HoldKeep the joint undisturbed through its set or clamp stage.
3 · LoadUse full cure—not surface firmness—before demanding use.

Calculate bond readiness

When was the bond assembled?
Conditions that affect drying
Where?
Thickness

Stated times

  • Set / hardened20 minutes
  • Full cure1 day

From Permatex data sheet · checked 2026-10-25. Anything not listed isn’t stated by the manufacturer.

Manufacturer website: permatex.com

Conditions & fine print
  • Stated conditions: 72°F (22°C)
  • Cure speed depends on the metal: active metals such as soft steel, brass and copper cure faster, while stainless steel, zinc, titanium and anodized surfaces need primer for the stated cure speed. Colder temperatures slow the cure.
  • Region US. Formulas can differ between countries; check your container.
  • Set / hardened: Steel nut and bolt test assemblies; cure speed depends on the metal and temperature.
  • Full cure: 24 hours at 72°F (22°C)
  • Entered from the manufacturer source; second review pending. Report outdated information
  • Actual results depend on preparation, thickness, ventilation, temperature, humidity, mixing and substrate.

Using this specific product

Permatex Medium Strength Threadlocker Blue is listed here as the Blue (24200) version for bolt, nut, and fastener. For bonding parts, the useful question is not simply whether the surface looks finished—it is whether the exact next-action milestone shown above has been reached.

Before you start

  • Confirm the package says Blue (24200); related versions can use different timing.
  • For bolt, nut, and fastener, pay particular attention to surface fit, cleanliness, clamping pressure and bond-line thickness.
  • Steel nut and bolt test assemblies; cure speed depends on the metal and temperature. 24 hours at 72°F (22°C).

How to check readiness

Test a noncritical offcut or wait for the stated load milestone before stressing the joint. Do not load critical fasteners until the full-cure time has passed. On 3/8-16 steel nut and bolt assemblies the joint sets (fixtures) in 20 minutes without primer, or 5 minutes using a primer. Reserve full cure for demanding use, chemicals, washing, immersion or load—not merely gentle handling.

Avoid this mistake

Handling strength and full load strength are different milestones.

Questions

How long does this product take to dry?

Permatex states: On 3/8-16 steel nut and bolt assemblies the joint sets (fixtures) in 20 minutes without primer, or 5 minutes using a primer. Conditions: Steel nut and bolt test assemblies; cure speed depends on the metal and temperature.. Full cure is attainable in 24 hours at room temperature, 72°F (22°C), or 1 hour at 200°F (93°C). Conditions: 24 hours at 72°F (22°C). These are the manufacturer’s stated times, not a guarantee.

How long does this product take to fully cure?

Permatex states: Full cure is attainable in 24 hours at room temperature, 72°F (22°C), or 1 hour at 200°F (93°C). Conditions: 24 hours at 72°F (22°C). These are the manufacturer’s stated times, not a guarantee.

What affects how long this product takes to dry or cure?

Cure speed depends on the metal: active metals such as soft steel, brass and copper cure faster, while stainless steel, zinc, titanium and anodized surfaces need primer for the stated cure speed. Colder temperatures slow the cure. Follow the product label for your conditions.

Similar products

All adhesives and glues