FireNut is a jet fire protection designed for bolted connections to extend service life in the event of a fire. The easy to install FireNut resists both jet fire and pool fire and can be tailor-made to accommodate almost any bolt size. The rigid and tough design means FireNut has extremely good resistance to mechanical damage when installed.
FireNut can be made to fit any shape and size to suit individual project requirements. It provides high resistance and protection from blast, impact, jet fire, ozone, UV, most solvents, and seawater, and gives excellent HISC, corrosion, mechanical and wear protection.
Size | D3 [mm] | FireNut width[mm] |
Socket diameter[mm] |
FireNut height [mm] |
Nut height [mm] |
Socket height[mm] |
FireNut wall thickness[mm] |
---|---|---|---|---|---|---|---|
1/2 UNC - 13 |
13 | 40 | 26 | 41 | 20 | 14 | 10 |
5/8 UNC - 11 |
16 | 45 | 31 | 48 | 23 | 17 | 11 |
3/4 UNC - 10 |
19 | 51 | 37 | 54 | 25 | 20 | 12 |
7/8 UNC - 9 |
22 | 56 | 42 | 60 | 28 | 23 | 13 |
1 UNC - 8 |
25 | 62 | 48 | 83 | 48 | 28 | 14 |
1 - 1/8 UN8 |
29 | 67 | 53 | 90 | 51 | 31 | 15 |
1 - 1/4 UN8 |
32 | 73 | 59 | 96 | 54 | 34 | 16 |
1 - 3/8 UN8 |
35 | 78 | 64 | 102 | 57 | 37 | 17 |
1 - 1/2 UN8 |
38 | 84 | 70 | 109 | 60 | 40 | 18 |
1 - 5/8 UN8 |
41 | 89 | 75 | 115 | 64 | 43 | 19 |
1 - 3/4 UN8 | 44 | 95 | 81 | 121 | 67 | 47 | 20 |
1 - 7/8 UN8 | 48 | 100 | 86 | 128 | 70 | 50 | 21 |
2 UN8 | 51 | 106 | 92 | 134 | 73 | 53 | 22 |
2 - 1/4 UN8 |
57 | 117 | 103 | 147 | 79 | 59 | 23 |
2 - 1/2 UN8 | 64 | 128 | 114 | 159 | 86 | 66 | 24 |
2 - 3/4 UN8 | 70 | 139 | 125 | 172 | 92 | 72 | 26 |
3 UN8 | 76 | 150 | 136 | 185 | 98 | 79 | 28 |
3 - 1/2 UN8 | 89 | 172 | 158 | 210 | 111 | 91 | 30 |
Can be made to fit any shape or size
Maintenance free
Fire resistant for up to 2 hours
High resistance to mechanical damage
Hand mounted
Enables easy system inspection
New bolts
New nuts
Old bolts
Old nuts



