Look up the weight of M.S. hex bolts, socket head cap screws, nuts, washers, rivets, pins and more by type, diameter and length. All tables follow IS, BS and DIN standards and are expressed in kg per 100 pieces unless stated otherwise.
37
Reference weight tables
7
Standards covered
100
Weights per 100 pcs (kg)
7.85
M.S. density (g/cm³)
Fastener Weight Calculator
Weight by Type, Diameter & Length
Select a fastener type, then the diameter and length (or size). The weight is read directly from the standard reference tables below.
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Complete Fastener Weight Charts
Pick any table from the reference set below to view the full matrix of weights by diameter and length.
How Fastener Weight Is Calculated
The charts above are direct lookup tables compiled from fastener manufacturers following IS / BS / DIN standards. When a chart is not available, you can estimate the weight with the standard formula:
Weight (kg) = Volume (mm³) × Density (g/cm³) ÷ 1,000,000
Mild steel density = 7.85 g/cm³, stainless steel 304/316 = 7.93 g/cm³. For a threaded rod, volume is roughly the rod core volume plus the head/thread allowance. Theoretical values should be used only for quick estimation — always confirm with the reference charts or our sales team for final packing and freight figures.
Why fastener weight matters
- Freight & shipping cost: most couriers and air/sea freight quote by chargeable weight.
- Quoting and pricing: fastener prices are typically given per 100 or per 1000 pieces with weight-based steel cost.
- Inventory & packing: plan carton quantities and pallet loads accurately.
- Customs declarations: net and gross weight must be declared on export documents.
FAQ – Fastener Weight
How do you calculate the weight of a fastener?
The most reliable way is to use a manufacturer weight chart, like the ones on this page, which list verified weights per 100 pieces for each diameter and length. For a rough estimate you can also calculate volume x density: weight (kg) = volume (mm³) x density (g/cm³) / 1,000,000, using 7.85 g/cm³ for mild steel.
What does fastener weight per 100 pcs mean?
It is the total weight of 100 identical fasteners in kilograms. Divide by 100 to get the weight of a single piece. This unit is standard in fastener pricing and packing because single-piece weights are very small.
How much does a hex bolt weigh?
It depends on diameter and length. For example an M.S. hex half-thread bolt with nut, M10 x 50 mm, weighs about 5.155 kg per 100 pcs, which is about 51.6 g per piece. Use the calculator above to check any combination.
Can I use these weight charts for shipping cost estimation?
Yes. Fastener net weight is the starting point for freight quotes. Add packaging weight and note that stainless steel parts weigh about 3% more than equivalent M.S. parts because of higher density (7.93 vs 7.85 g/cm³).
Are the weight charts for M.S. or stainless steel fasteners?
The charts on this page are for M.S. (mild steel / carbon steel) fasteners. For stainless steel 304/316 parts, multiply the M.S. weight by approximately 1.01 to 1.03. Contact us for exact figures for your grade.
Which standards are these fastener weights based on?
The tables follow Indian and international standards including IS 1363, IS 2269, IS 3757, BS 916, DIN 912, DIN 7984, DIN 975 and DIN 1481. Each table on this page states the standard it refers to.
Need exact weights for stainless steel (304/316), alloy steel or special surface finishes? Контакты GUXIANG — we manufacture fasteners from M2 to M72 with full material traceability.
Отказ от ответственности: The weight figures on this page are compiled from standard reference charts (IS / BS / DIN) and typical manufacturer data for mild steel fasteners. Actual weights may vary slightly by manufacturer tolerances, thread profile and surface treatment (galvanizing, Dacromet, zinc plating, etc.). GUXIANG is not liable for decisions made solely on these values; confirm final weights with our sales team for official quotations.
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