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Dri-Loc®
Item #: Dri-Loc
Pre-Applied Adhesive Temperature Range: -65°F to +400°F; -54°C to + 204°C Reusability: Complies with IFI 125, and IFI 525 (single use) Dri-Loc® adhesives (from Loctite Corporation), applied to threaded parts, form a unique coating that converts ordinary fasteners into self-locking fasteners. Dry to the touch, Dri-Loc adhesives become an integral part of the fastener and stay inert until parts are used. During the assembly process, Dri-Loc adhesive is activated by assembly forces, releasing anaerobic adhesive which locks parts securely. Dri-Loc adhesives are applied to the full circumference of the fastener. Resin fills all voids in the threads when installed, and cures to form an excellent seal to both liquids and gases. (For pre-applied non-locking thread sealant, see Vibra-Seal®) Dri-Loc adhesives are designed for applications where specific shear strengths, temperature range and substrate types are necessary. All Dri-Loc adhesives harden in the absence of air on ferrous and nonferrous metals without primer, activators or heat. They exhibit controlled lubricity, low on torque and are dry to touch for ease of assembly with automatic or hand tools. For convenience, coatings are color coded to indicate strength range and for easy inspection. Bolts with diameters of 1/16” through ¾” and with shank lengths of 3/8” to 6” can be coated with our specially developed equipment.
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Performance Listed below are the standard Dri-Loc adhesive formuli. In addition, Long-Lok can formulate custom Dri-Loc adhesives to meet your application’s particular requirements for locking and sealing performance. These special formulations are created in response to your specific requirement. | Formula | Color Code | Strength Range | Shear Strength (psi) | Temperature Range | Sample Breakaway/Prevailing Torque Value (lb-in.) per Fastener Size | | 1/4-20 | 5/16-18 | 3/8-16 | 7/16-14 | 1/2-13 | 5/8-11 | | 200 | Yellow | High | 2400 | -65°-300°F -54°-149°C | 80/25 | 190/95 | 220/105 | 470/200 | 860/350 | 1140/520 | | 201 | Yellow | High | 2700 | -65°-400°F -54°C-204°C | 60/45 | 190/95 | 245/130 | 415/265 | 685/380 | 1200/900 | | 202 | Green | Medium | 2200 | -65°-300°F -54°-149°C | 63/45 | 160/65 | 200/105 | 385/160 | 600/300 | 820/380 | | 203 | Silver | Mild | 1800 | 50/30 | 120/60 | 160/75 | 280/130 | 480/140 | 540/340 | | 204 | Red | High | 3100 | 80/60 | 220/180 | 280/250 | 470/340 | 860/600 | 1500/1400 | | Torque Tension The tension in the fastener can be reasonably controlled by controlling the torque. For any given fastener the torque tension relationship can be stated as follows: T = KDF where T = Torque, lb.-in. (N•m) D = Nominal bolt diameter, in. (m) F = Tension or clamping force, lbs. (N) K is a universal constant for all sizes which can be established empirically. (You can find safe stresses for bolts in manufacturers’ fasteners specifications or tool engineers’ handbooks). Notes for Breakaway Torque, Shear Strength, and Prevailing Torque Data: - Values are typical of batches; individual components may vary as much as ±25%. Values listed are meant for comparative purposes only; consult with us before designing, specifying or purchasing Dri-Loc fasteners.
- Values obtained on Grade 5 bolts with phosphate and oil finish; Dri-Loc adhesive coating was cured for 72 hours at 70°F.
- For test data on other fastener sizes and finishes, please contact us.
Solvent Resistance | | % Retention of Dri-Loc Product Codes 200-204 | | Test Temperature | 200 | 201 | 202 | 203 | 204 | | Air Reference | 188°F | 100 | 100 | 100 | 100 | 100 | | Glycol/Water | 188°F | 100 | 100 | 95 | 40 | 100 | | Isopropyl Alcohol | 188°F | 100 | 100 | 100 | 65 | 95 | | Gasoline | 188°F | 100 | 95 | 100 | 70 | 100 | | 10W30 Oil | 188°F | 100 | 90 | 100 | 55 | 90 | | Phosphate Ester | 188°F | 100 | 90 | 100 | 100 | 100 | | Toluene | 188°F | 100 | 95 | 100 | 60 | 100 | | Air Reference | 75°F | 100 | 100 | 100 | 100 | 100 | | Water | 75°F | 100 | 100 | 100 | 100 | 100 | | 10W30 Oil | 300°F | 80 | 100 | 90 | 30 | 80 | | Automatic Transmission Fluid | 300°F | 75 | 100 | 85 | 35 | 80 | |
| Resin (anaerobic) | Dimethacrylate | Flashpoint (Cleveland open cup) | Above 200°F (93°C) | | On-Part Life at 68°F/20°C (±20°F/-7°C and 50% RH) | 4 years | | Toxicity | low | | Specific Gravity | 1.05 to 1.15 | | Cure Speed @ 70°F/21°C | 10-minute fixture; full cure in 72 hours | | On-torque | Low installation torque | | K Values for Dri-Loc® Adhesives | | K Value | Zinc Phosphate/oil | 0.11 | | Dri-Loc 200 | 0.12 | | Dri-Loc 201 | 0.15 | | Dri-Loc 202 | 0.13 | | Dri-Loc 203 | 0.11 | | Dri-Loc 204 | 0.18 | | Staining Dri-Loc adhesives are slightly acidic and may stain or discolor some metals. However, the effect on performance of the adhesive has been shown to be inconsequential. Dri-Loc adhesives are not recommended for use on copper or brass. Material Safety Skin Contact Excessive or repeated skin contact with the liquid anaerobic resin squeezed from Dri-Loc treated fasteners may cause dermatitis in sensitive persons. In case of skin contact, remove promptly by washing with mild soap and water. In case of skin reaction, discontinue contact with product. If skin reaction persists, see a physician. KEEP MATERIAL AWAY FROM CHILDREN. Material Safety Data Sheets Below are links to the Dri-Loc material data sheets on the Loctite Corporation web site. These are links to Loctite information, for which Loctite (not Long-Lok) is responsible.
Dri-Loc coated fasteners are produced to order by Long-Lok. We can process your supplied parts, or we can supply complete products, including the basic fastener. To order Dri-Loc coated fasteners, or to request a quote, please call us and speak directly with one of our Sales Engineers.
Commercial Standards: IFI 125 and IFI 525
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