2L4×4×3/8 double 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.

2L4×4×3/8 has equal 4 in. legs, 3/8 in. thick, in contact back to back.

At 19.6 lb per foot it is one of the 21 2L4×4 sizes, which run from 13.2 to 37 lb/ft.

For strong-axis bending its section modulus is Sx = 3 in³ and its moment of inertia Ix = 8.64 in⁴, with a plastic modulus Zx = 5.38 in³.

Detailing dimensions

Long leg4"
Short leg4"
Thickness (t)3/8"

Section properties

Weight19.6 lb/ft
Area (A)5.72 in²
Ix8.64 in⁴
Sx3 in³
Zx5.38 in³
rx1.23 in
Iy16 in⁴
Sy4 in³
Zy6.46 in³
ry1.67 in

Other 2L4×4 sizes

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

2L4×4×1/42L4×4×1/4×3/82L4×4×1/4×3/42L4×4×5/162L4×4×5/16×3/82L4×4×5/16×3/42L4×4×3/8×3/82L4×4×3/8×3/42L4×4×7/162L4×4×7/16×3/82L4×4×7/16×3/42L4×4×1/22L4×4×1/2×3/82L4×4×1/2×3/42L4×4×5/82L4×4×5/8×3/82L4×4×5/8×3/42L4×4×3/42L4×4×3/4×3/82L4×4×3/4×3/4

All 2L4×4 sizes and dimensions →

Similar weight double angles

Comparable 19.6 lb/ft sections in other double angle sizes.

2L3-1/2×3-1/2×7/1619.6 lb/ft · Sx 2.64 in³2L3-1/2×3-1/2×7/16×3/819.6 lb/ft · Sx 2.64 in³2L3-1/2×3-1/2×7/16×3/419.6 lb/ft · Sx 2.64 in³2L6×3-1/2×5/16LLBB19.6 lb/ft · Sx 5.44 in³2L6×3-1/2×5/16×3/8LLBB19.6 lb/ft · Sx 5.44 in³2L6×3-1/2×5/16×3/4LLBB19.6 lb/ft · Sx 5.44 in³2L5×3×3/8LLBB19.6 lb/ft · Sx 4.44 in³2L5×3×3/8×3/8LLBB19.6 lb/ft · Sx 4.44 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 2L4×4×3/8 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Double angles · Steel Beam Size Chart

Interactive drawing