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Hi-Low Fastener Inch

Hi-low is a high performance, duel lead thread forming screw for plastic & wood applications, designed with a unique high and low thread. The higher sharper thread has a steep flank angle for positive engagement, lower radial pressure and reduced boss failure. The screw is designed to increase you drive to strip out ratio improving your in-place fastener costs.
  • Reduce cracking, splitting and boss breakage
  • Increase pull-out strength
  • Lower driving, higher strip out torques

Hi-Low Fastener Inch

Hi-Low Fastener

Screw Size
High Thread Diameter
Low Thread Diameter
Point Diameter
Pilot Hole Diameter Flexural Modulus of Plastic
Pilot Hole Diameter Flexural Modulus of Plastic
Pilot Hole Thread Cutting Diameter Flexural Modulus of Plastic
 
D
B
P
Up to 200,000 P.S.I .
200,000-400,000 P.S.I.
200,000-400,000 P.S.I.
2-32
.084-.090
.069
.050-.058
.067
.070
.076
3-28
.095- .105
.078
.057- .065
.073
.078
.082
4-24
.105-.115
.086
.061-.070
.081
.086
.089
5-20
.119- .125
.100
.073- .082
.093
.995
.104
6-19
.135-.145
.108
.080-.090
.101
.110
.116
7-19
.148-.158
.130
.089- .100
.120
.125
.128
8-18
.160-.170
.130
.095-.105
.120
.128
.136
10-16
.185-.195
.145
.099-.110
.136
.144
.152
11-16
.198-.210
.150
.113- .125
.149
.156
.169
12-16
.210-.220
.167
.125-.137
.157
.166
.177
13-16
.220-.230
.180
.127-.139
.169
.180
.187
1/4-15
.250-.260
.200
.161-.175
.189
.201
.218
5/16-14
.307-.137
.250
.200-.212
.238
.250
.257
  • Description:
    A thread forming screw with a double-lead, consisting of a low and a high thread. The lower thread varies in height from 1/3 to 1/2 that of the high thread, which is sharper and flatter than a standard thread.
  • Applications:
    for use in plastic, nylon, wood or other low-density materials. Thread design reduces driving torques, enhances resistance to thread stripping, improves pullout strength and lessens risk of cracking the work piece.

Eagle Fastener Corporation

453 E. Dartmoor Drive
Crystal Lake, IL 60014

PO Box 1259, Crystal Lake, IL 60014

Phone 815-455-7177
Phone 800-323-6142
Fax 815-455-7205


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