M8X6.5 Dimensions & Weight
M8X6.5 is an AISC miscellaneous (M) beam with a nominal depth of 8 in, weighing 6.5 lb per foot — commonly used for lintels, trimmers, and light framing. It is the heaviest of the 2 M8 sizes listed here.
M8X6.5 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Nominal depthfrom the designation | 8 in | 203.2 mm |
| Cross-section area (A)computed from weight and steel density | 1.91 in² | 12.3 cm² |
| Weight | 6.5 lb/ft | 9.7 kg/m |
Standard: AISC. Values from the published section tables; dimensions not listed here are not shown rather than estimated.
What does M8X6.5 weigh and cost?
M8X6.5 weighs 6.5 lb per foot. At an example material price of $0.92/lb that is about $5.98 per foot. Set your quantity, length, and price to total your own run:
Material only, example pricing. Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.
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Related sizes
Deeper reading: AISC Shape Database Guide · How to calculate steel weight