ANSI Threadlockers | McMaster-Carr

	Color Color

	Blue
	Red
	Green

	Manufacturer Model Number Manufacturer Model Number

242

263

290

	For Use On For Use On

	Locking Strength Locking Strength

Medium

High

	Specifications Met Specifications Met

ASTM

Mil. Spec.

NSF/ANSI

	Removal Method Removal Method

Hand Tool

Hand Tool and Heat

	For Maximum Thread Diameter For Maximum Thread Diameter

1/2"

3/4"

	Begins to Harden Begins to Harden

5 min.

10 min.

20 min.

	Maximum Temperature Maximum Temperature

300° F

360° F

	Breakaway Torque Breakaway Torque

70 in.-lbs.

90 in.-lbs.

275 in.-lbs.

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Viscosity Viscosity

40 cP

500 cP

1,150 cP

	For Use With For Use With

Beverage

Food

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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.

	Container
Mfr. Model No.	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
Loctite® Threadlockers
242	8.45	Bottle	10 min.	24 hrs.	-65° to 300°	3/4"	Thin Liquid	1,150	70	Blue	ASTM D5363, MIL-S-46163A	000000000	0000000

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.

263 bonds oily fasteners and does not require primer. Those that meet NSF/ANSI 61 are good for use with drinking water systems.

	Container
Mfr. Model No.	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
Loctite® Threadlockers
263	8.45 oz.	Bottle	5 min.	24 hrs.	-65° to 360°	1"	Thin Liquid	500	275	Red	NSF/ANSI 61	000000000	0000000

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

	Container
Mfr Model No.	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
Loctite® Threadlockers
290	8.45	Bottle	20 min.	24 hrs.	-65° to 300°	1/2"	Thin Liquid	40	90	Green	ASTM D5363, MIL-S-46163A, NSF/ANSI 61	000000000	0000000