Anaerobic Thread Locking Systems
Last edit date: 9/12/2023
Each Caltrans-authorized anaerobic thread locking system requires 3 components:
- CLEANER - to clean lubricant and oils from the threads of the stud and nut.
- PRIMER - to promote rapid curing of the anaerobic compound and to minimize migration of compound on threads.
- ANAEROBIC THREAD LOCKING ADHESIVE - to secure nut onto stud by filling the gap between nut and stud threads. Note: Anaerobic thread locking adhesive compounds will set only where no oxygen is available.
All components used in a single thread locking application shall be from one of the systems below and from the same thread locking adhesive manufacturer, following the Manufacturer’s Application Instructions for Caltrans-Authorized Anaerobic Thread Locking Systems.
| Manufacturer Information | Component | Trade Name | Part Number | Expiration Date | BABA Act Information* |
|---|---|---|---|---|---|
| Permabond International 480 South Dean Street Englewood, NJ 07631 |
Adhesive | Permabond HH120 | HH120 | 6/9/2028 | Unconfirmed |
| Cleaner & Primer | Perma-Lok Anaerobic Surface Conditioner | ASC10 | 6/9/2028 | Unconfirmed | |
| Saf-T-Lok 300 Eisenhower Lane North Lombard, IL 60148 |
Adhesive | Adhesive | T77 High Strength Permanent Thread Locker | 6/9/2028 | Unconfirmed |
| Cleaner & Primer | Primer T | 19166 | 6/9/2028 | Unconfirmed | |
| Hernon Manufacturing, Incorporated 121 Tech Drive Sanford, FL 32771 |
Adhesive | Hernon Nuts N' Bolts Anaerobic Adhesive | 429 | 3/1/2023 | Unconfirmed |
| Cleaner | Hernon Cleaner 62 | EF-62 | 3/1/2023 | Unconfirmed | |
| Primer | Hernon EF Primer 49 or 50 | EF-49, EF-50 | 3/1/2023 | Unconfirmed |