MP-31 · JOINTS AND FASTENERS

Washer Bearing Pressure

Calculate nominal washer bearing pressure from clamp load, inner diameter, outer diameter, and entered allowable pressure.

Preliminary design support. Your inputs and results stay in this browser.

INPUTS

Next decision: Screen bolted joint external load

Want to learn more? Fits and Retained Joints: Threads, Pins, Washers and Interference

WHAT THIS SCREEN ANSWERS

Washer contact pressure affects how clamp load enters a softer joint surface. The annular bearing area is calculated from the entered inner and outer diameters, then compared with clamp load. The simple model is a way to expose the governing question early.

A real washer can bend, embed, bridge a slot, or distribute load unevenly across a finished surface. Confirm washer geometry, material, hardness, joint surface, hole condition, and installation details. Its effect belongs in the next comparison.

Washer contact pressure affects how clamp load enters a softer joint surface. A real washer can bend, embed, bridge a slot, or distribute load unevenly across a finished surface. Where input provenance is weak, treat the result as a question to close.

The annular bearing area is calculated from the entered inner and outer diameters, then compared with clamp load. Confirm washer geometry, material, hardness, joint surface, hole condition, and installation details. The decision remains specific to this application because washer contact pressure affects how clamp load enters a softer joint surface. Turn the remaining unknowns into a short verification list.