Threadlocking

Application of thread locker in lab

Reliable Thread Lockers

Nuts N’ Bolts^® thread lockers secure threaded assemblies and resist loosening due to vibration and thermal expansion. These products cure anaerobically, in the absence of oxygen, for fast and reliable bonding. low, medium, and high strength versions are available as well as wicking grades which can be applied without disassembly. These tried and trusted products are used around the world and are specified in critical industries including defense and aerospace applications.

Custom Thread Locker Formulas

Hernon Manufacturing ™ maintains a library of over 5000 unique formulas of adhesives and sealants but occasionally a specialty application calls for a change to one of our established formulas or even the creation of an entirely new product. Hernon’s in-house laboratory offers custom formula creation, complete with extensive product testing and sampling. If you have an application bonding unique materials or in a unique environment, contact Hernon today to learn more about designing a custom formula.

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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® 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® 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. Each batch of Nuts N’ Bolts® 223 is tested to the lot requirements of CID-A-A 59720 Grade AVV, MIL-S22473E Grade AVV, and to the detail requirements of ASTM D5363 (AN0124).

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. Each batch of Nuts N’ Bolts® 225 is tested to the lot requirements of CID-A-A 59720 Grade AV, MIL-S-22473E (Grade AV), and to the detail requirements of ASTM D5363 (AN0123).

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. Each batch of Nuts N’ Bolts® 227 is tested to the lot requirements of MIL-S-22473E (Grade A), and to the detail requirements of ASTM D5363 (AN0121).

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. Each batch of Nuts N’ Bolts® 230 is tested to the lot requirements of MIL-S-22473E (Grade B), and to the detail requirements of ASTM D5363 (AN0131).

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. Each batch of Nuts N’ Bolts 232 is tested to the detailed requirements of ASTM D5363 (AN0141) which replaced MIL-S-22473E (Grade C) specifications.

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® 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. Each batch of Nuts N’ Bolts® 236 is tested to the lot requirements of MIL-S-22473E (Grade CV), and to the detail requirements of ASTM D5363 (AN0142).

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. Each batch of Nuts N’ Bolts® 237 is tested to the lot requirements of MIL-S-22473E (Grade D), and to the detail requirements of ASTM D5363 (AN0122).

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. Each batch of Nuts N’ Bolts® 240 is tested to the lot requirements of MIL-S-22473E (Grade E), and to the detail requirements of ASTM D5363 (AN0151).

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. Each batch of Nuts N’ Bolts® 246 is tested to the lot requirements of MIL-S-22473E (Grade HV), and to the detail requirements of ASTM D5363 (AN0162).

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. Each batch of Nuts N’ Bolts® 248 is tested to the lot requirements of MIL-S-22473E (Grade H), and to the detail requirements of ASTM D5363 (AN0161).

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. Each batch of Nuts N’ Bolts® 410 is tested to the lot requirements of ASTM D5363 (AN0241) and meets the requirements of obsolete MIL-S-46163A (Type III Grade P).

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. Each batch of Nuts N’ Bolts® 420 is tested to the lot requirements of ASTM D5363 (AN0311) and complies with MIL-S-46163A (Type II Grade M).

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. Each batch of Nuts N’ Bolts 423 is tested to the lot requirements of ASTM D5363 (AN0321), and to the detail requirements of MIL-S-46163A (Type II Grade N).

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® 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. UL Classification – File MH14222 Classified by Underwriters Laboratories Inc.® as to fire hazard only. Adhesive/Sealant 427 classed 20 to 30 between kerosene and paraffin oil in respect to fire hazard. Flash point (closed cup) 102.8ºC (217ºF). For use in devices handling gasoline petroleum oils, natural gas (pressure not over 300 psig), butane and propane not exceeding 2 in. pipe size. 29R9. Performance Testing Each batch of Nuts N’ Bolts® 427 is tested to the lot requirements of MIL-S-46163A (Type I Grade K), and to the detail requirements of ASTM D5363 (AN0221).

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. Nuts N’ Bolts® 429 meets the requirements of ASTM D5363 (AN0211) which replaced MIL-S-46163A (Type I Grade L) specifications.

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. Each batch of Nuts N’ Bolts® 431 is tested to the lot requirements of MIL-S-46163A (Type III Grade R), and to the detail requirements of ASTM D5363 (AN0261).

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® 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.

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.

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.

Threadlocking

Reliable Thread Lockers

Custom Thread Locker Formulas

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