McMaster-Carr

Choose a Category

	Color Color

	Green		Red
	Blue		Brown
	Orange		Yellow
	Purple

	Container Type Container Type

	Bottle		Aerosol Can

	Locking Strength Locking Strength

High

Medium

Low

	Type Type

Threadlocker

Retaining Compound

Primer

	For Use On For Use On

	Specifications Met Specifications Met

Mil. Spec.

ASTM

NSF/ANSI

	Container Size Container Size

	Consistency Consistency

Thin Liquid

Thick Liquid

	Begins to Harden Begins to Harden

	Removal Method Removal Method

Hand Tool

Hand Tool and Heat

	Clarity Clarity

Semi-Clear

Opaque

	Maximum Temperature Maximum Temperature

300° F

350° F

	Viscosity Viscosity

	For Maximum Thread Diameter For Maximum Thread Diameter

1/4"

3/4"

	Breakaway Torque Breakaway Torque

	Maximum Gap Size Filled Maximum Gap Size Filled

0.004"

0.005"

0.006"

	Shear Strength Shear Strength

2,000 lbs./sq. in.

3,000 lbs./sq. in.

Not Rated

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28 Products

About Structural Adhesives

Prevent threaded fasteners from loosening due to shock and vibration. These threadlockers begin to harden once coated surfaces are threaded together and exposure to air is blocked. Primer (sold separately) cleans the surface and decreases the time to reach full strength. It is recommended when working with aluminum, stainless steel, and titanium; black-oxide finishes; and cadmium and zinc coatings.

Threadlockers with medium locking strength require a hand tool to unthread.

Threadlockers with high locking strength require both heat and a hand tool to unthread.

Container
Size, oz.	Type	Begins to Harden	Reaches Full Strength	Temp. Range, °F	For Max. Thread Dia.	Consistency	Viscosity, cP	Breakaway Torque, in.-lbs.	Color		Each
Medium Locking Strength
Threadlockers
0.34	Bottle	30 min.	24 hrs.	-65° to 300°	3/4"	Thin Liquid	120	100	Blue	00000000	000000
1.69	Bottle	30 min.	24 hrs.	-65° to 300°	3/4"	Thin Liquid	120	100	Blue	00000000	00000
8.45	Bottle	30 min.	24 hrs.	-65° to 300°	3/4"	Thin Liquid	120	100	Blue	00000000	000000
High Locking Strength
Threadlockers
0.34	Bottle	20 min.	24 hrs.	-65° to 300°	3/4"	Thick Liquid	3,550	200	Red	00000000	00000
0.34	Bottle	60 min.	24 hrs.	-65° to 300°	2"	Thick Liquid	7,000	250	Red	00000000	00000
1.69	Bottle	20 min.	24 hrs.	-65° to 300°	3/4"	Thick Liquid	3,550	200	Red	00000000	00000
1.69	Bottle	60 min.	24 hrs.	-65° to 300°	2"	Thick Liquid	7,000	250	Red	00000000	00000
8.45	Bottle	20 min.	24 hrs.	-65° to 300°	3/4"	Thick Liquid	3,550	200	Red	00000000	000000
8.45	Bottle	60 min.	24 hrs.	-65° to 300°	2"	Thick Liquid	7,000	250	Red	00000000	000000

Heavy Duty Threadlockers

To withstand demanding, high-vibration applications such as motor and pump housings, these threadlockers have high breakaway torque. They begin to harden once coated surfaces are threaded together and exposure to air is blocked.

Primer (sold separately) cleans the surface and decreases the time to reach full strength. It is recommended when working with aluminum, stainless steel, and titanium; black-oxide finishes, and cadmium and zinc coatings.

Container
Size, oz.	Type	Begins to Harden	Reaches Full Strength	Temp. Range, °F	For Max. Thread Dia.	Consistency	Viscosity, cP	Breakaway Torque, in.-lbs.	Color	Specifications Met		Each
High Locking Strength
Threadlockers
1.69 oz.	Bottle	60 min.	24 hrs.	-65° to 350°	1"	Thin Liquid	520	300	Red	ASTM D5363, MIL-S-46163 Grade K Type I	00000000	000000

Threadlockers for Drinking Water

Threadlockers begin to harden once coated surfaces are threaded together and exposure to air is blocked.

Container
Size, oz.	Type	Begins to Harden	Reaches Full Strength	Temp. Range, °F	For Max. Thread Dia.	Consistency	Viscosity, cP	Breakaway Torque, in.-lbs.	Color	Specifications Met		Each
Medium Locking Strength
Threadlockers
1.69	Bottle	5 min.	24 hrs.	-65° to 350°	3/4"	Thick Liquid	1,800	150	Blue	ASTM D5363, MIL-S-46163 Grade N Type II, NSF/ANSI 61	00000000	000000

Adjustable Threadlockers

These threadlockers give a secure hold, but can be easily adjusted with hand tools. They can be removed without damaging countersunk fasteners, set screws, and other small fasteners. These threadlockers begin to harden once coated surfaces are threaded together and exposure to air is blocked.

Container
Size, oz.	Type	Begins to Harden	Reaches Full Strength	Temp. Range, °F	For Max. Thread Dia.	Consistency	Viscosity, cP	Breakaway Torque, in.-lbs.	Color		Each
Low Locking Strength
Threadlockers
1.69	Bottle	30 min.	24 hrs.	-65° to 300°	1/4"	Thick Liquid	2,950	30	Purple	00000000	000000

Wicking Threadlockers

Apply these threadlockers on fasteners that are already installed—their thin consistency allows them to flow into small gaps. They begin to harden once coated surfaces are threaded together and exposure to air is blocked.

Threadlockers with medium locking strength require a hand tool to unthread.

Container
Size, oz.	Type	Begins to Harden	Reaches Full Strength	Temp. Range, °F	For Max. Thread Dia.	Consistency	Viscosity, cP	Breakaway Torque, in.-lbs.	Color		Each
Medium Locking Strength
Threadlockers
1.69	Bottle	10 min.	24 hrs.	-65° to 350°	1/4"	Thin Liquid	20	100	Green	00000000	000000

Retaining Compounds for Close-Fitting Parts

Fill gaps up to 0.01" to secure unthreaded cylindrical metal parts such as shafts, bearings, and press-fit assemblies. These retaining compounds begin to harden once coated surfaces are pressed together, blocking exposure to air.

Container
Size, oz.	Type	Max. Gap Size Filled	Begins to Harden	Reaches Full Strength	Temp. Range, °F	Consistency	Viscosity, cP	Shear Strength, lbs./sq. in.	Color		Each
Low Locking Strength
Retaining Compounds
1.69	Bottle	0.005"	30 min.	24 hrs.	-65° to 300°	Thin Liquid	20	Not Rated	Brown	00000000	000000
1.69	Bottle	0.005"	30 min.	24 hrs.	-65° to 300°	Thin Liquid	20	Not Rated	Purple	00000000	00000
1.69	Bottle	0.005"	30 min.	24 hrs.	-65° to 300°	Thin Liquid	170	Not Rated	Brown	00000000	00000
1.69	Bottle	0.005"	30 min.	24 hrs.	-65° to 300°	Thin Liquid	170	Not Rated	Purple	00000000	00000
1.69	Bottle	0.005"	30 min.	24 hrs.	-65° to 300°	Thin Liquid	170	Not Rated	Yellow	00000000	00000
Medium Locking Strength
Retaining Compounds
1.69	Bottle	0.004"	30 min.	24 hrs.	-65° to 300°	Thin Liquid	150	Not Rated	Yellow	00000000	00000
1.69	Bottle	0.005"	30 min.	24 hrs.	-65° to 300°	Thin Liquid	20	Not Rated	Blue	00000000	00000
1.69	Bottle	0.005"	30 min.	24 hrs.	-65° to 300°	Thin Liquid	170	Not Rated	Blue	00000000	00000
High Locking Strength
Retaining Compounds
1.69	Bottle	0.004"	30 min.	24 hrs.	-65° to 300°	Thin Liquid	20	Not Rated	Green	00000000	00000
1.69	Bottle	0.005"	20 min.	24 hrs.	-65° to 350°	Thin Liquid	300	2,000	Green	00000000	00000
1.69	Bottle	0.005"	30 min.	24 hrs.	-65° to 300°	Thin Liquid	20	Not Rated	Red	00000000	00000
1.69	Bottle	0.005"	30 min.	24 hrs.	-65° to 300°	Thin Liquid	60	Not Rated	Orange	00000000	00000
1.69	Bottle	0.005"	30 min.	24 hrs.	-65° to 300°	Thin Liquid	170	Not Rated	Red	00000000	00000
1.69	Bottle	0.006"	20 min.	24 hrs.	-65° to 350°	Thin Liquid	600	3,000	Green	00000000	00000

Primers for Threadlockers, Retaining
Compounds, and Acrylic Adhesives

To speed cure time on coated fasteners, aluminum, stainless steel, or titanium, apply these primers before using threadlocker or retaining compound. They also work with no-mix acrylic adhesives.

Container
Size	Type	Drying Time	Consistency	Viscosity, cP	Color	Specifications Met		Each
Primers
4.25 oz.	Aerosol Can	1 min.	Thin Liquid	Not Rated	Green	MIL-S-22473E	00000000	000000

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