Undercut anchor from TPMC is a key-locking anchor available in both push-through and pre-setting configurations. Designed for reliable load attachment in cracked and uncracked concrete, it works with a specialized undercut drill bit that creates a precise cylindrical hole with a conical undercut at the base. A setting tool pushes the sleeve into the conical undercut, creating a positive mechanical interlock that is virtually expansion-free.
FM Approved, it is ideal for pipe hangers, sway braces, seismic bracing, and sprinkler systems, providing superior holding strength and maximum safety, especially in cracked concrete.
Available sizes (Imperial)
| Nominal anchor diameter | Allowable load in concrete (lbs, Cracked) | Allowable load in concrete (lbs, Non-cracked) | Compatible pipe size | Ref. No. |
|---|---|---|---|---|
| 3/8″ | 1280 | 2450 | Up to 4″ | P8603 (ISO) |
| 1/2″ | 2560 | 3780 | Up to 8″ | P8604 (ISO) |
| 5/8″ | 3690 | 5260 | Up to 12″ | P8605 (ISO) |
| 3/4″ | 23580 | 28780 | Up to 12″ | P8606 (ISO) |
Note: Allowable loads are based on carbon steel material and are approximate values converted from tested metric data. Values are for reference only. Actual design loads must be verified according to applicable design codes (ACI 318, ETAG, etc.), concrete strength, embedment depth, edge distance, and spacing.
Available sizes (Metric)
| Nominal anchor diameter | Max rec. tension for concrete (kN, Cracked) | Max rec. tension for concrete (kN, Non-cracked) | Compatible pipe size | Ref. No. |
|---|---|---|---|---|
| M10 | 5.7 | 10.9 | Up to DN100 | P8623 (FM) |
| M12 | 11.4 | 16.8 | Up to DN200 | P8624 (FM) |
| M16 | 16.4 | 23.4 | Up to DN300 | P8625 (FM) |
| M20* | 104.9 | 128 | Up to DN300 | P8626 (ISO) |
Note:
1. Maximum recommended tension loads are based on carbon steel material in cracked and non-cracked concrete. Values are for reference only. Actual design loads must be verified according to applicable design codes (ACI 318, ETAG, etc.), concrete strength, embedment depth, edge distance, and spacing.
2. *M20 is self-undercut anchor, not pre-undercut anchor.
Email us at info@tpmcsteel.com or use the form below. Normally you will be replied within 2 hours during support hours.
