Product Description
TORNILOCK® T-90 is a wicking grade anaerobic threadlocker — also referred to as a capillary threadlocker — with medium strength, specially formulated to lock and seal threads and for the maintenance of cylindrical components. Provides high resistance to heat, vibration, water, gases, oils, hydrocarbons, and numerous chemicals.
Penetrates by capillary action without disassembly
The TORNILOCK® T-90 is a green anaerobic threadlocker with an ultra-low 15 cps viscosity that penetrates pre-assembled threads by capillary action. Locks and seals fasteners without disassembling the unit.
Seals hairline cracks and porous metal parts
Specifically formulated to seal hairline cracks, porous metal parts, and pre-assembled cylindrical components. Prevents corrosion and leakage in joints where other threadlockers cannot reach.
Post-assembly application up to M5 / ½"
Handling time 20 minutes, full cure in 24 hours. Ideal for set screws and post-assembly adjustments in vibrating machinery. Meets MIL-S-46163A Type III Grade R and MIL-S-22473E Letter Grade AA.
Benefits
Direct technical benefits of T-90 in production and maintenance.
Wicking action: penetrates pre-assembled fasteners.
Ultra-low viscosity (15 cps) enables post-assembly application without disassembly.
Seals hairline cracks and porous metal parts.
Prevents corrosion and leaks in joints and porous surfaces.
Meets military specifications:
- MIL-S-46163A Type III Grade R
- MIL-S-22473E Grade AA
Suitable for fasteners with:
Diameter
Ideal for small fasteners up to 1/2 in. (M12) diameter.
Materials
Works in thin bond gaps. Formulated to provide controlled friction and torque/tension ratio during assembly.
Temperature
Fasteners exposed to a range of −67°F to +302°F.
Applications
› Wicking penetration into pre-assembled fasteners, acting as a medium-strength threadlocker without requiring disassembly.
› Sealing of hairline cracks, nuts, and small fasteners. Seals and bonds porous metal parts.
› Set screws and post-assembly adjustments. Locks fasteners after final adjustments on vibrating machinery or moving components.
› Application Method
Surfaces must be dry, clean, and free of contaminants. Apply sufficient threadlocker to fill the threads. TORNILOCK® T-90 works best in thin bond gaps and is formulated to provide controlled friction and torque/tension ratio during assembly.
Industries
Designed for post-assembly applications where wicking action enables locking without disassembly.
Electronics & Instrumentation
Sealing hairline cracks, set screws, precision adjustments on sensitive equipment.
MRO / Maintenance
Post-assembly locking, field repair without disassembly, preventive maintenance.
Manufacturing
Sealing porous metal parts, locking fasteners after final adjustments.
Automotive
Vibrating components, small fasteners, machinery where post-adjustment locking is required.
Cure Performance
Curing speed varies depending on temperature and material. Tensile strength of M10 screws — carbon steel, oil-coated steel, and zinc-plated steel.
Torque Values (ISO 10964)
Break Torque
88 in·lb
3/8 in. (M10) carbon steel fastener
Prevail Torque
257 in·lb
3/8 in. (M10) carbon steel fastener
Pre-torque Break
30 in·lb
At 44 in·lb, ISO 10964
Max. Pre-torque Prevail
40 in·lb
At 44 in·lb, ISO 10964
Technical Data
Property | Value |
Handling time | 20 minutes |
Working time | 1 – 3 hours |
Full cure time | 24 hours |
Break torque, ISO 10964 (3/8 in. / M10 carbon steel fastener) | 85 lbf·in |
Prevail torque, ISO 10964 (3/8 in. / M10 carbon steel fastener) | 250 lbf·in |
Pre-torque break at 44 in·lb (5 N·m), ISO 10964 | 30 N·m |
Max. pre-torque prevail at 44 in·lb (5 N·m), ISO 10964 | 40 N·m |
Compressive strength | Steel pins and collars >5.4 N/mm² (>780 psi) |
Temperature range | −67°F to +302°F |
Description | Specification |
Composition | Methacrylate ester |
Color | Green |
Viscosity | 15 cps @ 77°F — Brookfield RVT, spindle 3 @ 20 rpm |
Specific gravity | 1.07 |
Maximum thread diameter | 1/2 in. (M12) |
Gap fill | 0.0027 in |
Flash point | >212°F |
Solvent content | None |
Shelf life (unopened) | 2 years |
Thermal expansion coeff. | 80×10⁻⁶ K⁻¹ (ASTM D 696) |
Thermal conductivity coeff. | 0.10 W/(m·K) (ASTM C 177) |
Specific heat | 0.30 kJ/(kg·K) |
Chemical | Temperature | 500 hours | 1000 hours |
Acetone | 72°F | 95% | 95% |
Ethanol | 72°F | 95% | 95% |
Motor oil | 257°F | 85% | 50% |
Gasoline | 72°F | 90% | 90% |
Brake fluid | 72°F | 90% | 85% |
Water / Glycol | 189°F | 90% | 90% |
Military Specification Compliance
- MIL-S-46163A Type III Grade R
- MIL-S-22473E Grade AA
Available Sizes
Standard sizes of TORNILOCK® T-90 from field MRO to industrial production scale.
0.34 fl oz
Field repair, light MRO, hairline crack sealing.
1.7 fl oz
Workshops, scheduled maintenance, low-to-medium volume production.
8.5 fl oz
Assembly lines, serial production, high continuous volume.
1 lb
Production plants, automatic dispensers, high industrial consumption.
Frequently Asked Questions
Common technical questions about TORNILOCK® T-90.
Wicking action is the product's ability to self-penetrate extremely small spaces thanks to its ultra-low viscosity of 15 cps. This allows T-90 to be applied to pre-assembled fasteners without disassembly — the liquid flows between thread crests by capillary action.
Per the TDS, handling time is 20 minutes, working time 1 to 3 hours, and full cure in 24 hours at 72°F on 3/8 in. (M10) carbon steel. On passive substrates such as zinc-plated steel, cure is significantly slower — use an activator to accelerate the process.
Yes. T-90 is medium strength, but localized heating and hand tools are recommended for disassembly. Break torque: 85 in·lb (10 N·m), though prevail torque is significantly higher at 257 in·lb (29 N·m), indicating persistent resistance after initial break.
Yes. T-90 is specifically formulated to seal and bond porous metal parts and hairline cracks. Its ultra-low viscosity (15 cps) allows it to penetrate micropores and micro-cracks that other threadlockers cannot reach.
T-90 meets MIL-S-46163A Type III Grade R (military specification for medium-strength anaerobic threadlockers) and MIL-S-22473E Grade AA. These certifications are required in defense applications and some OEM sectors.
TORNILOCK® T-90 operates in a range of −67°F to +302°F, making it suitable for fastener locking in high-temperature environments in most industrial applications. Its specialty is wicking action (15 cps): it penetrates pre-assembled fasteners without disassembly. For applications exceeding +302°F, consult the technical team for the appropriate high-temperature formulation.
Yes. T-90's wicking action (15 cps) is particularly suited for post-assembly applications such as spark plugs, where applying a threadlocker before assembly is not practical. As a true capillary threadlocker, apply T-90 at the thread-fastener interface after installation and allow capillary action to draw the product between the threads automatically. Handling time: 20 minutes.