ITP & MTP
The ITP & MTP bolt and nut protection caps are designed to protect bolts and nuts from thread damage and to
considerably help prevent corrosion. These screw-on metal caps have a special internal female thread matching
the bolt thread, that ensures a strong and secure fixing to the bolt. These protection caps are commonly installed on
heat exchangers and reactors operating at temperatures up to 550˚C and over, where common plastic caps would melt.
Ideal for use in refineries, petrochemical, LNG plants, offshore platforms and steel structures. The ITP caps are
available to suit imperial bolt thread sizes from ¾” to 4” and MTP caps are suitable for metric bolt thread sizes from
M16 to M100.
IMPERIAL SIZES
| MODEL NO. | BOLT SIZE | DIMENSIONS IN MM |
|---|
| A | B | C | D |
|---|
| ITP012 | 3/4″ | 19.0 | 39 | 22 | 23 |
| ITP014 | 7/8″ | 22.3 | 44 | 26 | 33 |
| ITP100 | 1″ | 25.5 | 48 | 29 | 37 |
| ITP102 | 1 1/8″ | 28.6 | 55 | 33 | 40 |
| ITP104 | 1 1/4″ | 31.8 | 60 | 36 | 44 |
| ITP106 | 1 3/8″ | 35.0 | 65 | 39 | 48 |
| ITP108 | 1 1/2″ | 38.2 | 70 | 42 | 53 |
| ITP110 | 1 5/8″ | 41.3 | 77 | 46 | 59 |
| ITP112 | 1 3/4″ | 44.5 | 83 | 49 | 64 |
| ITP114 | 1 7/8″ | 47.7 | 88 | 53 | 67 |
| ITP200 | 2″ | 51.0 | 94 | 56 | 72 |
| ITP204 | 2 1/4″ | 57.2 | 105 | 62 | 80 |
| ITP208 | 2 1/2″ | 63.5 | 114 | 69 | 91 |
| ITP212 | 2 3/4″ | 70.0 | 125 | 75 | 99 |
| ITP300 | 3″ | 76.3 | 136 | 81 | 107 |
| ITP304 | 3 1/4″ | 82.7 | 152 | 87 | 116 |
| ITP308 | 3 1/2″ | 89.0 | 160 | 94 | 126 |
| ITP312 | 3 3/4″ | 95.4 | 172 | 100 | 135 |
| ITP400 | 4″ | 102.0 | 183 | 107 | 152 |
METRIC SIZES
| MODEL NO. | BOLT SIZE | DIMENSIONS IN MM |
|---|
| A | B | C | D |
|---|
| MTP16 | M16 | 16 | 31 | 18 | 22 |
| MTP18 | M18 | 18 | 34 | 21 | 23 |
| MTP20 | M20 | 20 | 39 | 23 | 25 |
| MTP22 | M22 | 22 | 40 | 25 | 32 |
| MTP24 | M24 | 24 | 45 | 29 | 34 |
| MTP27 | M27 | 27 | 51 | 30 | 37 |
| MTP30 | M30 | 30 | 55 | 33 | 40 |
| MTP33 | M33 | 33 | 61 | 36 | 46 |
| MTP36 | M36 | 36 | 65 | 39 | 48 |
| MTP39 | M39 | 39 | 70 | 42 | 52 |
| MTP42 | M42 | 42 | 77 | 46 | 59 |
| MTP45 | M45 | 45 | 83 | 49 | 64 |
| MTP48 | M48 | 48 | 88 | 53 | 67 |
| MTP52 | M52 | 52 | 94 | 56 | 72 |
| MTP56 | M56 | 56 | 102 | 60 | 84 |
| MTP64 | M64 | 64 | 113 | 69 | 91 |
| MTP68 | M68 | 68 | 119 | 73 | 98 |
| MTP72 | M72 | 72 | 125 | 77 | 100 |
| MTP76 | M76 | 76 | 131 | 81 | 105 |
| MTP80 | M80 | 80 | 136 | 85 | 107 |
| MTP90 | M90 | 90 | 159 | 95 | 126 |
| MTP100 | M100 | 100 | 183 | 105 | 144 |
