What Are BOSTIK Born2Bond Threadlocking Anaerobic Adhesives?
BOSTIK Born2Bond threadlocking adhesives are single-component anaerobic liquid adhesives designed to fill and seal all voids between mating metal parts. Once cured, they create a cohesive connection that resists extreme vibration, temperature swings, and chemical exposure — without requiring a two-part mixing system or heat activation.
The line covers four distinct grades — TA-22, TA-43, TA-71, and TA-90 — spanning low to high strength and viscosities from 20 cP to 3,000 cP. This range allows a single product family to address virtually all threadlocking requirements in mechanical assembly, machine engineering, gear manufacturing, and engine or powertrain applications.
How Do TA-22, TA-43, TA-71, and TA-90 Compare in Strength?
Breakaway strength on steel is measured per ISO 10964. The four grades differ significantly:
- TA-22 (Low strength, Purple): 5 ft-lb breakaway — suited for fasteners that require periodic disassembly.
- TA-43 (Medium strength, Blue): 19 ft-lb breakaway — a general-purpose choice for most mechanical assemblies.
- TA-71 (High strength, Red): 25 ft-lb breakaway — permanent locking for high-vibration or critical joints.
- TA-90 (Medium strength, Green): 9 ft-lb breakaway — fast-fixture option where quick throughput matters.
Color-coding (purple, blue, red, green) matches the conventional anaerobic threadlocker industry standard, reducing misapplication risk on the shop floor.
What Viscosity Should You Choose for Your Application?
Viscosity determines how the adhesive wicks into thread gaps and how well it stays in place on vertical surfaces. Born2Bond offers four viscosity bands:
- TA-22: 900–1,500 cP — medium-bodied; good gap fill on coarser threads.
- TA-43: 2,500–3,000 cP — high viscosity; minimal migration, ideal for overhead or vertical assembly.
- TA-71: 400–600 cP — lower viscosity; fast wicking into tight thread clearances.
- TA-90: 20–55 cP — very low viscosity; penetrates pre-assembled fasteners by capillary action.
Matching viscosity to thread clearance and joint geometry prevents under-fill (leading to vibration loosening) and over-migration (contaminating adjacent surfaces).
How Fast Do Born2Bond Threadlockers Fixture?
Fixture time — the point at which parts can be handled without disturbing the bond — varies by grade:
- TA-22: 20 minutes
- TA-43: less than 15 minutes
- TA-71: 10 minutes
- TA-90: 7 minutes
TA-90’s 7-minute fixture time is the fastest in the line, making it the preferred choice for high-throughput production environments where line speed is a constraint. Full cure times depend on substrate, gap size, and temperature; consult the product TDS for complete cure schedules.
What Temperature Range Do Born2Bond Threadlockers Tolerate?
Three of the four grades — TA-22, TA-43, and TA-71 — are rated for -67°F to 356°F (-55°C to 180°C), making them suitable for engine and powertrain applications where thermal cycling is significant. TA-90 carries a narrower rating of -67°F to 302°F (-55°C to 150°C). When operating temperatures approach or exceed 300°F, TA-90 should not be the first choice; select TA-43 or TA-71 instead.
All four grades are compatible with both active and passive metals, expanding their applicability across steel, aluminum, brass, and zinc-plated fasteners commonly found in industrial equipment.
Why Use a Single Threadlocking Product Line for All Requirements?
Maintaining separate inventories of multiple threadlocker brands increases carrying cost, creates mis-pick risk, and complicates SDS compliance. The Born2Bond line consolidates four strength-viscosity profiles under one brand, one SDS family, and one supplier relationship. According to the source, this approach delivers reduced costs and reduced storage compared to holding multiple competing products.
Applications cited in the source include mechanical parts assembly, machine engineering, gear manufacturing, and engines and powertrains — sectors where unplanned fastener loosening generates unscheduled downtime and safety risk.
Summary
- BOSTIK Born2Bond offers four anaerobic threadlocker grades (TA-22, TA-43, TA-71, TA-90) covering low to high strength and 20–3,000 cP viscosity range.
- Breakaway strength on steel (ISO 10964) ranges from 5 ft-lb (TA-22) to 25 ft-lb (TA-71).
- Fixture times range from 7 minutes (TA-90) to 20 minutes (TA-22).
- TA-22, TA-43, and TA-71 are rated to 356°F (180°C); TA-90 is rated to 302°F (150°C).
- All grades suit active and passive metals; TDS and SDS are available on request from Bostik.
Products discussed in this episode
- Bostik Born2Bond TA-22 Threadlocking Adhesive – 50 ml Bottle
- Bostik Born2Bond TA-43 Threadlocking Adhesive
- BOSTIK Bostik Born2Bond TA-71 Threadlocking Adhesive – 50 ml Bottle
Browse all BOSTIK products on PE Energy Industrial Supply.