ND Microspheres® Epoxy


ND Microspheres Epoxy is a pre-applied process in which microencapsulated, epoxy based, room temperature curing threadlocking adhesives are applied to male or female threaded fasteners of virtually all sizes, configurations, materials and finishes.

How it Works

After choosing ND Microspheres Epoxy processing, have your parts sent to one of ND’s service centers. ND will then apply a microencapsulated epoxy resin suspended in a hardener to fasteners. After drying, parts are shipped back to the customer ready for use. When installed, the forces of engagement crush the microscopic capsules of epoxy resin, mix the separate reactant components, and initiate a chemical reaction which locks the parts together.



ND Microspheres Epoxy processing is compatible with most fastener sizes, configurations, materials and finishes.

Exceptional Locking

Extensive testing indicates that ND Microspheres Epoxy processed fasteners provide two to four times greater breakaway torque than conventional ``plastic`` thread locking devices.

Resists Chemicals

Processed parts resist and seal against most automotive fluids. Oil, water, antifreeze, and gasoline have virtually no effect on performance once the final cure has been achieved.

Low Prevailing On Torque

Compared to patch threadlockers, ND Microspheres Epoxy fasteners have a lower on torque and assemble easily with common hand tools.

On-Part Life

Materials used for ND Microspheres Epoxy processing will remain inert until a cure is activated by thread engagement.

Surpasses IFI Standards

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


  • Saves Time: Processed fasteners can be automatically fed through standard feeding devices – speeding up your workflow and improving productivity.
  • Saves Money: ND Microspheres Epoxy processing 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, processed parts are unaffected by vibration or reversal of stress and greatly reduces the need to re-tighten fasteners.


  • Under typical conditions, have a fixture time of 4 hours with a full cure in 72 hours.
  • It is recommended that ND Microspheres Epoxy processed parts are not reused.
  • Typically the first one to three threads from the end of the fasteners are left free of material to assure ease of starting.
  • 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

MaterialColorCompetes WithPrimary UsePrevailing on Torque*Breakaway Torque*Temp MinTemp MaxLubricityFixture TimeFull Cure Time
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)Medium4 Hrs72 Hrs
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)Medium4 Hrs72 Hrs
1193SOrange or Neutral3M™ Fastener Adhesive 2451 & 2510, ThreeBond® 2440Heavy Duty Lock0.55 Nm30 Nm - Exceeds IFI 125 & IFI 525-65°F (-54°C)300°F (150°C)Medium4 Hrs72 Hrs
1193LEOrange or Sky Blue3M™ Fastener Adhesive 2451 & 2510, ThreeBond® 2440Heavy Duty Lock0.55 Nm30 Nm - Exceeds IFI 125 & IFI 525-65°F (-54°C)300°F (150°C)Medium4 Hrs72 Hrs
ElectrolocLight Bluen/aElectronic Fasteners0.22 Nm1.1 Nm-65°F (-54°C)300°F (150°C)Medium

Data provided is for Liquid Slurry utilizing Toluene as solvent. DPC (Dry Powder Concentrate) version is available to applicators. Eco-Loc is a registered 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 variations of the ND Microspheres Epoxy process meets or exceeds 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
Caterpillar1E2486ND 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 MotorsGMW14657B  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 & Process Data Sheets

Increase product quality while saving time and money with Pre-Applied adhesives and sealants.