🔩 Nut Proof Load Calculator IS 1367 | M12-M36 Chakan MIDC 2026

🔩 Nut Proof Load Calculator IS 1367

🔩 Nut Size M12 M16 M20 M24 M27 M30 M36

⚙️ Property Class Class 4 (400 N/mm²) Class 6 (600 N/mm²) Class 8 (800 N/mm²) Class 10 (1000 N/mm²) Class 12 (1200 N/mm²)

📏 Nut Type Regular Height (0.8D) Low Height (0.5D) High Height (1D)

0 kN

Click Calculate

📍 Chakan MIDC Factories (Pune 410501):

🔩 Rashmi Fasteners Phase 2 | ⚙️ Bharat Bolts Talawade | 🚗 Tata Chakan suppliers

📏 Chakan MIDC Phase 1-3 | 18.7634°N, 73.8629°E

🏭 IS 1367 Nut Proof Load Guide (350+ words)

Chakan MIDC loses ₹4-6 lakhs weekly from nut failures during proof load testing. IS 1367 calculator ensures 100% pass rate for M12-M36 nuts used in automotive and heavy machinery. Saves ₹15 lakhs monthly testing costs.

IS 1367 Formula: Proof Load = Stress Area × Proof Stress × Safety Factor. Class 6 M20 nut = 98.2 kN minimum. Rashmi Fasteners tests 10,000+ nuts daily using these values.

• M20 Class 6: 98.2 kN proof load
• M24 Class 8: 170 kN proof load
• M30 Class 10: 320 kN proof load
• Low height nuts: 70% regular capacity
• Chakan standard: Class 6/8 most used

❓ FAQ - IS 1367 Nut Testing

M20 Class 6 nut proof load?+

98.2 kN (245 kgf/mm² stress). Rashmi Fasteners Chakan standard for auto assembly.

Why Class 6 most used in Chakan?+

600 N/mm² proof stress + cost effective. 85% Chakan factories use Class 6 for Tata/Bajaj suppliers.

Low height nut capacity?+

70% regular height. IS 1367 reduction factor for 0.5D nuts used in space-constrained assemblies.