Engineering lab · Interactive tool

Pin + Clevis Joint Calculator.

Screen single- or double-shear pin joints for average pin shear, projected bearing stress, and governing material margin.

Pin + clevis joint / average shear and bearing

Live calculation

01Joint geometry + load

02Allowables

Pin in a clevis jointA central lug sits between two clevis ears and is connected by a transverse pin.CLEVISLUGPINLOAD PATH
Average shear + projected bearingτ = F / (nA); σᵦ = F / (td)

Pin-joint results updated. Pin average shear 63.66 megapascals. Governing factor of safety 2.

Pin average shear63.66 MPaFoS 4.71
Lug bearing125 MPaFoS 2
Clevis bearing83.33 MPaFoS 3
Governing factor of safety2157.08 mm² shear area
Revision1.2
AuthorJared Maffucci
Last technical review23 July 2026
Input guardrailsFinite values; nonnegative magnitudes; physical geometry and material domains enforced
UsePreliminary engineering judgment only
Variable definitions
  • F: applied load
  • d: pin diameter
  • t: lug thickness
  • n: shear planes
  • S: material allowable
Hand-verified examples
  • 10 kN double shear: 125 MPa lug bearing and FoS 2.0
  • Invalid plane count: input is rejected
Change log · revision 1.2

Added visible variables, two verification examples, and an experience connection. Calculation method is unchanged.

Related engineering capability

A pin joint carries more than average shear

This model is a fast load-path screen for the pin, central lug, and clevis ears. It helps identify the element that deserves the next geometry or allowable iteration.

Detailed design must add pin bending, net-section and shear-out failure, edge distance, clearance, eccentricity, fatigue, wear, retention, and local contact behavior.

Before releasing the joint

  • Check pin bending and combined stress
  • Verify lug net section, shear-out, and edge distance
  • Resolve load sharing between clevis ears
  • Evaluate fatigue, wear, lubrication, and clearance growth
  • Define retention, assembly, inspection, and service strategy

Direct conversation

Review the product, the available evidence, and the decision blocking progress.

Send a concise, non-confidential brief. You will work directly with Jared from the first review through final handoff.

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