Mfr. No. 271 Sealants | McMaster-Carr

The most commonly used threadlockers, these liquids prevent loosening due to vibration, bending, or improper torque. You only need a few drops to evenly coat threads. As you twist parts together, exposure to air is blocked and the threadlocker begins to harden.

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.

High Locking Strength—Keep fasteners firmly in place in motors, pumps, and other applications subjected to heavy shock and vibration. Breaking the bond of these threadlockers requires a propane torch, heat gun, or induction heater. As a result, they shouldn't be used in setups that you disassemble often.

Thin Liquid—Seep into tight spaces better than thick liquids, so they're best for fine threads.

Military Specification—Mil. Spec. threadlockers are manufactured and tested to strict U.S. military standards.

		Container										Each		Package
	Mfr. Model No.	Size, fl. oz.	Type	Begins to Harden, min.	Color	Breakaway Torque, in·lbf	Temp. Range, ° F	Consistency	Viscosity, cP	Mil. Spec.	Reaches Full Strength, hr.		Each	Pkg. Qty.		Pkg.
High Locking Strength







				Loctite®

				271	0.02	Single-Use Capsule	10	Red	250	-65 to 300	Thin Liquid	500	MIL-S-46163	24	91458A880	00000	100	91458A807	0000000


				271	0.34	Bottle	10	Red	250	-65 to 300	Thin Liquid	500	MIL-S-46163	24	91458A160	00000	10	91458A168	000000
				271	1.69	Bottle	10	Red	250	-65 to 300	Thin Liquid	500	MIL-S-46163	24	91458A190	00000	10	91458A173	000000
				271	8.45	Bottle	10	Red	250	-65 to 300	Thin Liquid	500	MIL-S-46163	24	91458A730	000000	10	91458A704	00000000
				271	33.8	Bottle	10	Red	250	-65 to 300	Thin Liquid	500	MIL-S-46163	24	1810A89	000000	—	———	0