L4×4×1/4 angle

Detailing dimensions and section properties from the AISC Shapes Database, 16th Edition. Values are shown to the nearest 1/16 in. as they appear on a shop drawing.

L4×4×1/4 has equal 4 in. legs, 1/4 in. thick.

At 6.6 lb per foot it is the lightest of the 7 L4×4 sizes, which run from 6.6 to 18.5 lb/ft.

For strong-axis bending its section modulus is Sx = 1.03 in³ and its moment of inertia Ix = 3 in⁴, with a plastic modulus Zx = 1.82 in³.

Detailing dimensions

Long leg4"
Short leg4"
Thickness (t)1/4"
k (detailing)5/8"

Section properties

Weight6.6 lb/ft
Area (A)1.93 in²
Ix3 in⁴
Sx1.03 in³
Zx1.82 in³
rx1.25 in
Iy3 in⁴
Sy1.03 in³
Zy1.82 in³
ry1.25 in
J0.0438 in⁴

Other L4×4 sizes

Same nominal size, different weight — useful when you are checking a substitution or a lighter section.

L4×4×5/16L4×4×3/8L4×4×7/16L4×4×1/2L4×4×5/8L4×4×3/4

All L4×4 sizes and dimensions →

Similar weight angles

Comparable 6.6 lb/ft sections in other angle sizes.

L5×3×1/46.6 lb/ft · Sx 1.51 in³L3-1/2×3×5/166.6 lb/ft · Sx 0.951 in³L3×2-1/2×3/86.6 lb/ft · Sx 0.803 in³L4×3-1/2×1/46.2 lb/ft · Sx 1.01 in³L5×3-1/2×1/47 lb/ft · Sx 1.55 in³L3-1/2×2-1/2×5/166.1 lb/ft · Sx 0.925 in³L3×3×5/166.1 lb/ft · Sx 0.699 in³L4×3×5/167.2 lb/ft · Sx 1.22 in³

Detailing values are rounded to the nearest 1/16 in. per the AISC Steel Construction Manual. Verify critical dimensions against the current Manual before fabrication. Need L4×4×1/4 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Angles · Steel Beam Size Chart

Interactive drawing