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Threadlocking

Advanced Threadlocking Solutions for Secure Fastening

Hernon Manufacturing provides industry-leading threadlocking adhesives designed to prevent loosening, leakage, and failure in threaded assemblies. Our solutions range from low-strength threadlockers for easy disassembly to medium-strength threadlockers for general-purpose applications and high-temperature threadlockers for extreme conditions.

Engineered for precision and reliability, our military-spec threadlocking adhesives meet the highest industry standards, ensuring durable fastening for aerospace, automotive, and industrial applications. Whether you need the best threadlocker for vibration resistance or a high-temp threadlocker for extreme heat environments, Hernon has a solution tailored to your needs.

Why Choose Hernon’s Threadlocking Adhesives?

Prevents Loosening – Secures locking thread bolts and thread locking screws against vibration.
High-Temp & Military-Spec Options – Meets stringent industry standards.
Versatile Strength Levels – Choose from low-strength, medium-strength, or high-temperature threadlockers.
Industrial-Grade Performance – Trusted by aerospace, automotive, and manufacturing industries.

For unmatched durability and security, Hernon’s threadlocking adhesives provide the ultimate fastening solution. Explore Hernon’s Threadlocking Solutions Today!

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Nuts N' Bolts® 431

Nuts N’ Bolts® 431 is a wicking anaerobic used for preassembled equipment and structures where penetration into fastener connection points is required. This product allows very simple preventive maintenance by permitting thread locking without dismantling equipment. The product “wicks” into voids by capillary action. Use Nuts N’ Bolts® 431 to seal pores or pinhole porosity in welded seams, tanks, castings, or metal parts. The cured adhesive is a thermoset plastic suitable for temperatures up to 400°F (204°C), and exposure to most solvents.

Nuts N' Bolts® 128

Nuts N’ Bolts® 128 is a single component, low strength thread locker designed for locking plastic and metal fasteners. Fixture time is about 5 minutes and adhesive can be pre or post applied. Any excess adhesive on the surface will cure and will not migrate to the other parts. Nuts N’ Bolts® 128 can be used as a low strength thread locker, bonder or tamper proofer for metal, polyester, nylon and many other thermo plastics materials.

Nuts N' Bolts® 227

Nuts N’ Bolts® 227 is a single component, high strength, anaerobic compound used to lock and seal fine threaded nuts, bolts, and studs in a wide variety of applications.

Nuts N' Bolts® 230

Nuts N’ Bolts® 230 is a single component medium strength, anaerobic compound used to lock and seal fine threaded nuts, bolts and studs in a wide variety of applications where removal with ordinary hand tools is necessary.

Nuts N' Bolts® 232

Nuts N’ Bolts® 232 is a single component medium strength, anaerobic compound used to lock and seal fine threaded nuts, bolts and studs in a wide variety of applications where removal with ordinary hand tools is necessary.

Nuts N' Bolts® 234

Nuts N’ Bolts® 234 is a single component medium strength, anaerobic compound used to lock and seal coarse threaded nuts, bolts and studs in a wide variety of applications where removal with ordinary hand tools is necessary.

Nuts N' Bolts® 237

Nuts N’ Bolts® 237 is a single component, high strength, anaerobic compound used to lock and seal fine threaded nuts, bolts, and studs in a wide variety of applications.

Nuts N' Bolts® 240

Nuts N’ Bolts® 240 is a single component anaerobic compound used to lock and seal fine threaded nuts, bolts and studs in a wide variety of applications requiring easy removal or adjustment.

Nuts N' Bolts® 425

Nuts N’ Bolts® 425 is a single component anaerobic thread locking material, which is thixotropic and develops medium to high strength. The product cures when confined in the absence of air between close-fitting metal surfaces.

Nuts N' Bolts® 246

Nuts N’ Bolts® 246 is a single component anaerobic compound used to lock and seal coarse threaded nuts, bolts and studs in a wide variety of applications where removal with ordinary hand tools is necessary.

Nuts N' Bolts® 25203

Nuts N' Bolts® 25952

Nuts N' Bolts® 410

Nuts N’ Bolts® 410 is a single component, low viscosity anaerobic adhesive/sealant designed especially for wicking applications. It has the ability to penetrate porous structures and cracks by capillary action, filling voids as large as 0.005 in.

Nuts N' Bolts® 420

Nuts N’ Bolts® 420 is a single component anaerobic thread locking material, which is thixotropic and develops low strength for easy disassembly. The product cures when confined in the absence of air between close fitting metal surfaces.

Nuts N' Bolts® 428

Nuts N’ Bolts® 428 is a single component anaerobic threadlocking compound designed for heavy duty applications subject to operating temperatures to 450°F (232°C). The product delivers high strength locking and sealing on screws, nuts, bolts, studs and fittings. Excellent break-loose and prevailing torque values assure maximized resistance to transverse vibration loosening at elevated temperatures. Meets requirements of CID A-A-59720 Grade HT

Nuts N' Bolts® 429

Nuts N’ Bolts® 429 is a single component anaerobic thread locking adhesive. Nuts N’ Bolts® 429 is a high-strength adhesive for locking and sealing large bolts and studs 1inch and larger diameters. Curing occurs only when adhesive is confined between mating surfaces. The cured adhesive is suitable for temperatures up to 300°F (149°C) and exposure to most solvents.

ThreadPaste 432

Threadpaste 432 is a single component anaerobic thread-locking compound designed for heavy duty applications subject to operating temperatures to 450°F (232°C). The product delivers high strength locking and sealing on screws, nuts, bolts, studs and fittings. Excellent break-loose and prevailing torque values assure maximized resistance to transverse vibration loosening at elevated temperatures.

Nuts N' Bolts® 433

Weld Sealant 433 is a single component anaerobic penetrating adhesive and sealant. Utilizing capillary action, Weld Sealant 433 penetrates and seals porosities and cracks as large as 0.127 mm. Once confined away from air Weld Sealant 433 cures to a thermoset plastic. Sealant remaining on the surface will not cure and can be easily wiped clear. Benefits include retention of fluids and pressures as well as corrosion and contamination elimination. Temperature resistance is up to 400°F (204°C). Weld Sealant 433 is impervious to most solvents. Welds, castings and powder metal parts can be sealed to their rupture pressure.

Nuts N' Bolts® 434

Nuts N' Bolts® 434 is a thixotropic, 100% active anaerobic compound which solidifies with reliable and expected strength upon application to most fasteners. Particularly suitable for applications on less active substrates such as stainless steel and plated surfaces, where disassembly with hand tools is required for servicing. Nuts N' Bolts® 434 is easily applied. No mixing (single component), no curing outside the joint and no torque adjustments are necessary. Nuts N' Bolts® 434 offers increased profitability, having approximately 80% cost advantage over the cheapest mechanical methods as well as reducing inventories, maintenance, and the need for costly precision tolerances. Nuts N' Bolts® 434 can be used on up to 3/4inch bolts with light oil contamination.

Nuts N' Bolts® 427

Nuts N’ Bolts® 427 is a single component anaerobic thread locking material, which develops high strength. The product cures when confined in the absence of air between close fitting metal surfaces.

Nuts N' Bolts® 97860

Nuts N’ Bolts® 97860 is a wicking anaerobic used for preassembled equipment and structures where penetration into fastener connection points is required. This product allows very simple preventive maintenance by permitting thread locking without dismantling equipment. The product “wicks” into voids by capillary action. Use Nuts N’ Bolts® 97860 to seal pores or pinhole porosity in welded seams, tanks, castings, or metal parts. The cured adhesive is a thermoset plastic suitable for temperatures up to 400°F (204°C), and exposure to most solvents.

Nuts N' Bolts® 236

Nuts N’ Bolts® 236 is a single component medium strength, anaerobic compound used to lock and seal fine threaded nuts, bolts and studs in a wide variety of applications where removal with ordinary hand tools is necessary.

Nuts N' Bolts® 225

Nuts N’ Bolts® 225 is a single component, high strength, anaerobic compound used to lock and seal coarse threaded nuts, bolts, and studs in a wide variety of applications.

Nuts N' Bolts® 223

Nuts N’ Bolts® 223 is a single component, high strength, anaerobic compound used to lock and seal coarse threaded nuts, bolts, and studs in a wide variety of applications.

Nuts N' Bolts® 220

Nuts N’ Bolts® 220 is a single component, high strength, anaerobic compound used to lock and seal fine threaded nuts, bolts, and studs in a wide variety of applications.

Nuts N' Bolts® 248

Nuts N’ Bolts® 248 is a single component anaerobic compound used to lock and seal fine threaded nuts, bolts and studs in a wide variety of applications requiring easy removal or adjustment.

Nuts N' Bolts® 423

Nuts N’ Bolts® 423 is a single component anaerobic thread locking material, which is thixotropic and develops medium strength. The product cures when confined in the absence of air between close fitting metal surfaces and is particularly suitable for less active substrates such a stainless steel and plated surfaces.

SELF LOCKER 525

Hernon® 525 is a pre-applied, micro-encapsulated adhesive for threaded fasteners. Hernon® 525 stays on the bolt until the shearing action of an engaging nut applied to the coated bolt causes the capsules to break allowing the adhesive to cure. This material securely locks and seals against vibration loosening and fluid leakage. Typical Applications Locking & Sealing: • Head bolts • Truck Axle bolts • Transmission nuts • Pipe plugs and fittings Product Benefits • Improves reliability. • Prevents loosening of bolts due to vibration. • Seals against leakage. • Prevents threads from corroding. • Easily visible for inspection. • Pre-coated parts can be packaged and shipped in normal fashion. • Excellent solvent resistance. •Bonds to stainless steel bolts.

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Threadlocking

Advanced Threadlocking Solutions for Secure Fastening

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