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Inch Series TAPTITE II® Screws and Bolts

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TAPTITE II® Thread Rolling Screws

TAPTITE II® thread rolling screws have the TRILOBULAR™ shape which reduces friction during thread forming, provides prevailing torque which exceeds the level of locking screws, and most importantly, inherently provides resistance to vibrational loosening.

To utilize the in-place cost savings and performance benefits of TAPTITE II® screws in large sizes in structural applications, the combination of CORFLEX®-I selective hardening is highly beneficial. CORFLEX®- I TAPTITE II® bolts can be used where high-strength grade-strength level bolts are required.

Reduced In-Place Cost!!

TAPTITE II® thread rolling screws reduce in-place fastener costs and provide vibration resistant assemblies. TAPTITE II® thread rolling screws are used to create strong, uniform load carrying internal threads into untapped nut members upon installation. When REMINC developed the original TAPTITE® TRILOBULAR™ shape thread rolling screw, it revolutionized the use of threaded fasteners in high production assembly. Assembly efficiency and joint performance, along with lower in-place fastening cost, have been the benefits of using TAPTITE® screws. TAPTITE II® screws and bolts continue these benefits along with meeting the quality and performance needs of the future.

Lower In-Place Fastening Costs

Only 15% of the total in-place cost of a fastening is the cost of the screw or bolt. TAPTITE II® screws and bolts lower the cost of the remaining 85%. The following is a list of some of the cost-savings advantages of using TAPTITE II® thread rolling screws.

  • Elimination of separate tapping operations and associated costs.
  • Built-in resistance to vibrational loosening eliminates the need for lock washers, adhesives, or plastic patches and plugs.
  • Generates stronger mating threads with uninterrupted grain flow due to work hardening of the nut for higher stripping resistance.
  • Accepts larger pilot hole variations than drilled and tapped holes.
  • Works in punched, drilled, cored and extruded holes in many different metals.
  • With use of CORFLEX® metallurgy, can be provided in grade strengths of high tensile bolts for use in structural applications in deep thread lengths of engagement.
  • No assembly line cross threading.
  • Prevailing torque often equals or exceeds locking screw standards.



Items  Request Information

  Item # Screw Size Max. C Dimension Min. C Dimension Max. D Dimension Min. D Dimension Max. Point Cp
item-1149 2-56 in 0.0875 in 0.0835 in 0.0840 in 0.0800 in 0.070 in
item-1150 3-48 in 0.1010 in 0.0970 in 0.0970 in 0.0930 in 0.081 in
item-1151 4-40 in 0.1145 in 0.1105 in 0.1095 in 0.1055 in 0.090 in
item-1152 5-40 in 0.1275 in 0.1235 in 0.1225 in 0.1185 in 0.103 in
item-1153 6-32 in 0.1410 in 0.1350 in 0.1350 in 0.1290 in 0.111 in
item-1154 8-32 in 0.1670 in 0.1610 in 0.1610 in 0.1550 in 0.137 in
item-1155 10-24 in 0.1940 in 0.1880 in 0.1860 in 0.1800 in 0.153 in
item-1156 10-32 in 0.1930 in 0.1870 in 0.1870 in 0.1810 in 0.163 in
item-1157 12-24 in 0.2200 in 0.2140 in 0.2120 in 0.2060 in 0.179 in
item-1158 1/4-20 in 0.2550 in 0.2490 in 0.2450 in 0.2390 in 0.206 in
item-1159 5/16-18 in 0.3180 in 0.3120 in 0.3070 in 0.3010 in 0.264 in
item-1160 3/8-16 in 0.3810 in 0.3750 in 0.3685 in 0.3625 in 0.320 in
item-1161 7/16-14 in 0.4445 in 0.4385 in 0.4305 in 0.4245 in 0.375 in
item-1162 1/2-13 in 0.5075 in 0.5015 in 0.4920 in 0.4860 in 0.432 in

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