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LOCTITE 271 - 50ml (red, high strength threadlocker)

Product description:
LOCTITE 271 is designed for the permanent locking and sealing of threaded fasteners. The product cures when confined in the absence of air between close fitting metal surfaces and prevents loosening and leakage from shock and vibration. Typical applications include the locking and sealing of large bolts and studs (up to M25 ). This product is not recommended for use in pure oxygen and/or oxygen rich systems and should not be selected as a sealant for chlorine or other strong oxidizing materials. Further information on the product can be obtained from your local technical department:

Steps to achieve the best adhesive results:
1. For best results, clean all surfaces (external and internal) with a LOCTITE SF 7063 cleaning solvent and allow to dry.
2. If the material is an inactive metal or the cure speed is too slow, spray all threads with activator LOCTITE SF 7471 or LOCTITE SF 7649 and allow to dry.
3. Shake the product thoroughly before use.
4. To prevent the product from clogging in the nozzle, do not allow the tip to touch metal surfaces during application.
5. For Thru Holes, apply several drops of the product onto the bolt at the nut engagement area.
6. For Blind Holes, apply several drops of the product down the internal threads to the bottom of the hole.
7. For Sealing Applications, apply a 360° bead of product to the leading threads of the male fitting, leaving the first thread free. Force the material into the threads to thouroughly fill the voids. For bigger threads and voids, adjust product amount accordingly and apply a 360° bead of product on the female threads also.
8. Assemble and tighten as required.

9. Apply localized heat to nut or bolt to approximately 250 °C. Disassemble while hot.

10. Cured product can be removed with a combination of soaking in a LOCTITE SF 7200 solvent and mechanical abrasion such as a wire brush.

Store product in the unopened container in a dry location. Storage information may be indicated on the product container labeling.
Optimal Storage: 8 °C to 21 °C. Storage below 8 °C or greater than 28 °C can adversely affect product properties. Material removed from containers may be contaminated during use. Do not return product to the original container. Henkel Corporation cannot assume responsibility for product which has been contaminated or stored under conditions other than those previously indicated.

  • Thread size: to M36
  • Strength: high
  • Time to get full strength (22 °C):
    -Steel: 24 hours
    -Stainless steel: 72 hours
    -Brass: 2 hours
    -Zinc dichromate: 24 hours
  • Time to obtain initial strength (22 °C):
    -Steel: 15 minutes
    -Stainless steel: 2 hours
    -Brass: 15 minutes
    -Zinc dichromate: 2 hours
  • Breakaway Torque M10: 28 Nm
  • Working temperature : from -55 °C to +150 °C
  • Color: red

Full technical information can be found in the technical data sheet.