BoltShield

Protection Caps for Bolts and Nuts

BoltShield protection caps are screw-on metal caps designed to protect stud bolts and nuts from thread damage, dirt and considerably help to prevent corrosion. BoltShield metal protection caps are the best bolt thread protection and bolt & nut protection for all industrial applications. By using BoltShield caps you will extend the life of bolts and nuts and make maintenance and repair procedures easier and faster. Commonly installed on heat exchangers, reactors and process equipment, BoltShield operates at temperatures up to 550°C and over, where common plastic caps would melt.

  • Two different models available – either caps protecting bolt thread (TR Type) or both bolt and nut (TD Type)
  • Available in standard sizes from M21 to M100 – other sizes and coatings upon request
  • Available in different materials such as aluminium, stainless steel, carbon steel and zing electroplated carbon steel

Description

 

Metric
Size A B C D1 D2
M12 12 24 14 18 18
M14 14 29 16 20 21
M16 16 31 18 22 24
M18 18 34 21 23 27
M20 20 39 23 25 30
M22 22 40 25 32 33
M24 24 45 29 34 36
M27 27 51 30 37 38
M30 30 55 33 40 42
M33 33 61 36 46 48
M36 36 65 39 48 53
M39 39 70 42 52 57
M42 42 77 46 59 62
M45 45 83 49 64 67
M48 48 88 53 67 72
M52 52 94 56 72 77
M56 56 102 60 84 85
M64 64 113 69 91 94
M68 68 119 73 98 105
M72 72 125 77 100 105
M76 76 131 81 105 114
M80 80 136 85 107 114
M90 90 159 95 126 133
M100 100 183 105 144 150
Imperial
Size A B C D1 D2
1/2″ 12,7 27 15 20 20
5/8″ 16 34 19 22 24
3/4″ 19 39 22 23 30
7/8″ 22,3 44 26 33 33
1″ 25,5 48 29 37 38
1 1/8″ 28,6 55 33 40 42
1 1/4″ 31,8 60 36 44 48
1 3/8″ 35 65 39 48 53
1 1/2″ 38,2 70 42 53 57
1 5/8″ 41,3 77 46 59 62
1 3/4″ 44,5 83 49 64 67
1 7/8″ 47,7 88 53 67 72
2″ 51 94 56 72 77
2 1/4″ 57,2 105 62 80 85
2 1/2″ 63,5 114 69 91 94
2 3/4″ 70 125 75 99 105
3″ 76,3 136 81 107 114
3 1/4″ 82,7 152 87 116 123
3 1/2″ 89,2 160 94 126 133
3 3/4″ 95,4 172 100 135 138
4″ * 102 183 107 152 151
4 1/4″ * 108 * * * 162
4 1/2″ * 114,5 * * * 172
4 3/4″ * 121 * * * 181
5″ * 127,2 * * * 190
5 1/4″ * 133,5 * * * 199
5 1/2″ * 140 * * * 207
5 3/4″ * 146,2 * * * 222
6″ * 152,5 * * * 229

*) Only available as TR models.

Brand

BoltShield

BoltShield

BoltShield® is a line of metal caps designed and developed by Tornilastra Srl in order to protect bolts and nuts against accidental thread damage and dirt, and to prevent corrosion. By using BoltShield caps the life of bolts and nuts can easily be extended, after which the maintenance and repair procedures become much easier and faster. Widely used in refineries, petrochemical plants, LNG plants, offshore platforms and steel structures, the BoltShield caps are perfect solution in protecting bolts and nuts on valves, pipelines, traffic sign posts, bridges, wind turbines and several other applications. Visit manufacturer's website >>
BoltShield

Product Sheet

Product Sheet (in Finnish) [PDF]


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