Heat-Fix
Unheaded (UNDHEAFIX) Headed (HDHEAFIX)
| Metric and Unified Dimensions | Brass / Self Colour | ||||||||
| Thead 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* | 1/4-28 UNF* | 5/16-24 UNF* | |||||||
| L mm | 3.9 | 5.8 | 5.8 | 7.1 | 8.1 | 9.5 | 12.7 | 12.7 | |
| W mm | 3.5 | 4.4 | 4.4 | 5.2 | 6.1 | 6.9 | 8.5 | 10.0 | |
| T mm | 0.51 | 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 | 11.1 | |
| 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 | 1.4 | 1.8 | 1.8 | 2.1 | 2.4 | 2.8 | 3.6 | 5.0 | |
* 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.
Heat-Fix - Information for designers
The Heat-Fix has been designed for post mould installation into notch-sensitive thermoplastics using heat. The rounded knurls alleviate stress in the mating boss.
Advantages
Designed specifically for notch-sensitive plastics
Symmetrical design for automated installation
High pull out and torque resistance
Installation Data
The Heat-Fix is installed using heat and you must ensure that the insert softens, but does not melt the plastic which helps avoid flash forming around the top of the insert.
