ND Microspheres® Epoxy


ND Microspheres Epoxy Series threadlocking products are microencapsulated, epoxy based, room temperature curing adhesives that can be applied to male or female threaded fasteners of virtually all sizes, configurations, materials and finishes. Pre-Applied to fasteners, ND Microspheres Epoxy arrives dry to the touch and ready for assembly.

How it Works

ND Microspheres Epoxy Series products contain a microencapsulated epoxy resin that is suspended in a hardener. The force of thread engagement crushes the microscopic capsules of epoxy resin, mixing the reactant components, and initiating a chemical reaction which locks the parts together. This product series provides consistent and predictable torque values and requires no heat or primers for curing.



ND Microspheres Epoxy Series products are compatible with most fastener sizes, configurations, materials and finishes.

Exceptional Locking

Extensive testing indicates that the ND Microspheres Epoxy Series provides two to four times greater breakaway torque than conventional ``plastic`` fastener locking devices.

Resists Chemicals

The cross-linked molecular structure of ND Microspheres Epoxy Series products make them some of the most resistant types of adhesives. Oil, gasoline, salt spray, acids, solvents, and water have virtually no effect on parts when introduced after a final cure has been achieved.

Low Prevailing On Torque

Compared to patch threadlockers, ND Microspheres Series products assemble easily with common hand tools.

Long Shelf Life

The ND Microspheres Epoxy Series has an on part life of 2 years* and will remain inert until a cure is activated by engagement with a mating thread.

Surpasses IFI Standards

ND Microspheres Epoxy Series products meet or exceed all torque requirements of IFI 125, IFI 525, as well as automotive adhesive coated fastener performance specifications.


  • Saves Time: Fasteners coated with ND Microspheres can be automatically fed through standard feeding devices – speeding up your process and improving productivity.
  • Saves Money: The bulk pre-application of ND Microspheres to fasteners is less expensive than hand applying bottled thread locking compounds at the point of assembly. It also eliminates the need for costly lock washers, cotter pins or castellated nuts.
  • Quality Control: Pre-Applied ND Microspheres fasteners are coated to specification, ensuring consistent performance, unlike the variation from hand applying bottled products.
  • Reliability: Under most operating conditions, ND Microspheres are unaffected by vibration or reversal of stress and greatly reduces the need to re-tighten fasteners.


  • Under typical conditions, ND Microspheres Epoxy Series product have a fixture time of 4 hours with a full cure in 72 hours.
  • ND Microspheres Epoxy materials are normally applied one to three threads back from the end of a fastener to assure ease of starting.
  • ND Microspheres Epoxy 593 DPC is available in powder form which, once reconstituted with the recommended solvent, exhibits the same properties as factory supplied liquid material.
  • It is recommended that ND Microspheres Epoxy Series products are not reused.
  • As with all our Pre-Applied products, ND Industries can apply ND Microspheres Epoxy to your fasteners at any one of our regional service centers, or we can supply you with completed pre-applied fasteners.
    *Shelf life of un-activated part is 2 years when stored in a dry, cool environment.

ND Microspheres Epoxy Competes With


Engine Applications, Wheel Bearings, Automotive Locking Applications, Automotive Body/Frame Bolts, Suspension Areas, Brakes, Rear-End, Transmissions

Compatible Fasteners

External Threads:Internal Threads:Rivets:
Banjo Bolts, Hex Bolts, Flange Bolts, Wheel Bolts, Machine Screws, Cap Screws, Wood Screws, Sheet Metal Screws, Self Drilling Screws, Shoulder Bolts, Fully Threaded Studs, Double Ended Studs, Singled Ended Studs, Press-In Captive Studs, Carriage Bolts, Lag Bolts, Socket Screws, Set Screws, Eye Bolts, Eye Lags, J-Bolts, U-Bolts, Elevator Bolts, Hangar Bolts, Perforated Base Studs, Through Hole Weld Studs.Flange Nuts, Hex Body Clinch Nuts, Prevailing Torque Nuts, Floating Nuts, Hollow Bolts, Insert Nuts, Lock Nuts, Weld Nuts, Barrel Nuts, Chicago Bolts, Jam Nuts, Wing Nuts, Square Nuts, Self-Locating Projection Weld Nuts (WN/WNS), Spot Weld Nuts, Projection Weld Nuts, Bridge Spot Weld Nuts, Tab Spot Weld Nuts, Square Projection Weld Nuts, Flange Weld Projection Nuts, Stamped Flange Weld Nuts, Spot Weld Cage Nuts.N/A

Don’t see your parts on this list? We process thousands of different types of fasteners and depending on the quantity will gladly look at whether we can accommodate yours as well.

Technical Data

ProductColorCompetes WithPrimary UsePrevailing on Torque*Breakaway Torque*Temp MinTemp MaxBase SolventLubricity
593SBlue, Yellow, Pink, Green, Red3M™ Fastener Adhesive 2353, 2353Y & 4844, ThreeBond® 2430Heavy Duty Lock0.55 Nm30 Nm-65°F (-54°C)300°F (150°C)TolueneMedium
Eco-Loc® (593SA)Blue*Eco-Loc is a performance offset, but in a water based formula. 3M™ Fastener Adhesive 2353 & 4844, ThreeBond® 2446Heavy Duty Lock0.54 Nm24 Nm-65°F (-54°C)300°F (150°C)WaterMedium
1193SOrange or Neutral3M™ Fastener Adhesive 2451 & 2510, ThreeBond® 2440Heavy Duty LockMinimalExceeds IFI 125 & IFI 525-65°F (-54°C)300°F (150°C)TolueneMedium

Data provided is for Liquid Slurry utilizing Toluene as solvent. DPC (Dry Powder Concentrate) version is available to applicators. Eco-Loc is a trademark of ND Industries Inc.

* On clean, dry, or dry phosphated surfaces.

3M™ is a trademark of 3M Company, USA. Threebond® is a registered trademark of Threebond Holdings CO., LTD Corporation, Japan.


Particular formulations of ND Microspheres Epoxy meet or exceed the performance requirements of the following specifications and/or standards:

Spec ForSpec NumberND ProcessND Material
American Axel MFG.MS-2408ND Microspheres Epoxy1193S
Axletech InternationalSTF 02-450ND Microspheres Epoxy593S
Bendix (Allied Signal)ES-1821ND Microspheres Epoxy593S
BobcatMS119ND Microspheres Epoxy593S
Bosch NormN 38 AND Microspheres Epoxy593SB
Caterpiller1E2486ND Microspheres Epoxy593S
Dana642ND Microspheres Epoxy593S
DanaES-PS-0614ND Microspheres Epoxy1193S
DanaPS-612ND Microspheres Epoxy1193S
Detroit Diesel80K15ND Microspheres Epoxy593S
DINDIN 267 Part 27ND Microspheres EpoxyMicrospheres Epoxy
EatonPS-005ND Microspheres Epoxy593S
Fiat ChryslerMS-CC76 Type A & CND Microspheres EpoxyEpoxy series
Fiat ChryslerPF-6616ND Microspheres EpoxyEpoxy series
FordESA-M2G200-AND Microspheres Epoxy593SB
FordESB-M2G200-BND Microspheres Epoxy1193S
FordESS-M11P24-A1ND Microspheres Epoxy1193S
FordESS-M11P24-A2ND Microspheres Epoxy593S, 1193S
FordWSS-M11P45-A1ND Microspheres Epoxy593S, 593DPC
FordWX-200ND Microspheres Epoxy593S (Green)
General MotorsGM6175MND Microspheres Epoxy593S,1193S, 294S
General MotorsGME00151ND Microspheres Epoxy593S, 294S
General MotorsGMW 14657B  ND Microspheres Epoxy593S, 1193S, 294S
Harley DavidsonEG805-34900ND Microspheres Epoxy593S, 1193S
Hyundai/KIAMS-721-39ND Microspheres Epoxy1193S
IFIIFI-125ND Microspheres EpoxyMicrospheres Epoxy
IFIIFI-525ND Microspheres EpoxyMicrospheres Epoxy
John DeereRES 10432ND Microspheres Epoxy1193S
Meritor (Rockwell)Q-29ND Microspheres Epoxy593S YELLOW
Meritor (Rockwell)Q-43ND Microspheres Epoxy593S
SteelcaseES 3-86-29AND Microspheres Epoxy593SB
TRWTMS-P-10559ND Microspheres Epoxy1193S
TRWTPS-C-20,089ND Microspheres Epoxy1193S

Safety, Technical & Product Data Sheets

Process NameMaterialSafety Data Sheet (Applied)Technical Data Sheet (Applied)Process Data Sheet
ND Microspheres® Epoxy593SBND Microspheres 593SB (Applied)Microspheres Epoxy 593 - TDS (Applied)ND Microspheres Epoxy - PDS
ND Microspheres® Epoxy593SA (Eco-Loc®)Microspheres Epoxy 593SA (Eco-Loc) - TDS (Applied)ND Microspheres Epoxy - PDS
ND Microspheres® Epoxy1193SND Microspheres 1193S (Applied)Microspheres Epoxy 1193 - TDS (Applied)ND Microspheres Epoxy - PDS
Increase product quality while saving time and money with Pre-Applied adhesives and sealants.