Captive Panel Retainers Installation Guide

Review the below information to properly install various captive panel retainers, including knurled shank retainers, panel screw retainers, and press fit retainers of either style.

Installation of Captive Panel Retainers

Knurled Shank Retainers – Press Fit Only

Press Fit Only
American Standard Sizes: All Dimensions are in Inches

SHANK DIA. “B”.198.228.280
.366
.414
.479
“X” DIA.
.188
.218
.270
.356
.404
.469


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CAD model & drawing of round head captive screw with self-sealing washer & retainer

Panel Screw Retainers – Non Press Fit Styles Only

American Standard Sizes: All Dimensions are in Inches:

SHANK DIA. “B”.188.218.250.270.356.404.406.433
“X” DIA..191.221.257.272.359.407.407.437
“Y” DIA..252.282.318.333.420.468.468.498

Rule of thumb for “Y” countersink: Y = X + .045 min. or 0.78 max

Panel retainer illustration

Knurled Shank Retainers – Press Fit Only

Press Fit Only
Metric Sizes: All Dimensions are in Millimeters

SHANK DIA. “B”55.87.19.3
“X” DIA.4.755.546.869.04

Panel Screw Retainers – Non Press Fit Styles Only

Metric Sizes: All Dimensions are in Millimeters

SHANK DIA. “B”6.311
“X” DIA.6.511.2
“Y” DIA.812.6

Rule of thumb for “Y” countersink: Y = X + 1.14 min. or 1.98 max

Panel retainer illustration

Have Questions?

If you have questions about captive panel retainers and other fasteners, contact an MW expert for more details.