Fin-Fix
Unheaded (UNDFINFIX) Headed (HDFINFIX)
| Metric and Unified Dimensions | Brass / Self Colour | ||||||||
| Thread Size | Metric | M2* | M2.5* | M3 | M3.5 | M4 | M5 | M6 | M8* |
| Unified* | 2.56 UNC* | - | 4.40 UNC* | 6.32 UNC* | 8.32 UNC* | 10.24 UNC* | 1/4-20 UNC* | 5/16-18 UNC* | |
| 10.32 UNF* | 1/4-20 UNF* | 5/16-24 UNC* | |||||||
| L mm | 4.0 | 4.8 | 4.8 | 6.4 | 7.9 | 9.5 | 12.7 | 12.7 | |
| W mm | 3.7 | 4.5 | 4.5 | 5.3 | 6.1 | 7.0 | 8.6 | 10.2 | |
| T mm | 0.45 | 0.58 | 0.58 | 0.74 | 0.89 | 1.07 | 1.32 | 1.32 | |
| H mm | 4.8 | 5.5 | 5.5 | 6.4 | 7.1 | 7.9 | 9.5 | 11.0 | |
| N mm | 3.1 | 3.9 | 3.9 | 4.7 | 5.5 | 6.3 | 7.9 | 9.5 | |
| Recommended Hole Size mm (-0.0/+0.1) | 3.2 | 4.0 | 4.0 | 4.8 | 5.6 | 6.4 | 8.0 | 9.6 | |
| Minimum Wall Thickness mm | 1.6 | 2.0 | 2.0 | 2.4 | 2.8 | 3.2 | 4.0 | 4.8 | |
* Non preferred - Please contact our sales team to enquire for availability.
Unified variations can be manufactured with either fine or coarse threads. Please state when enquiring.
All data is correct to the best of our knowledge, however Lancaster Fastener cannot be held responsible for any errors or omissions.
Fin-Fix - Information for designers
The Fin-Fix is a press-in insert designed for post mould installation into thermoplastics. The combination of fins and knurls provides good levels of pull out and torque resistance.
Advantages
Simple, press-in installation
Free running female thread
Good pull out and torque resistance
Installation Data
The Fin-Fix should be installed with a press that can provide a steady squeezing action to prevent damage to the mating boss.
