Caliper Overseas is a reliable Mushroom Head Square Neck Bolts supplier and manufacturer in India, recognized for providing excellent fastening solutions to diverse industries. Mushroom Head Square Neck Bolts are customized fasteners, with a broad rounded head and a square neck that avoids rotation during tightening. Our bolts are manufactured following international standards such as IS, ANSI, ASME, and DIN, ensuring precision and reliability in every piece.
Our bolts are extensively applied in construction, machinery and structural usage because of their secure hold and easy installation. It is resistant to corrosion, has high tensile strength and is highly durable, making it suitable for long-term use. If you require bulk orders or custom sizes, we also offer quick service and better quality. For dependable fastening solutions, contact us today and discover a wide variety of Mushroom Head Square Neck Bolts designed for your needs.
Table Of Content
About Mushroom Head Square Neck Bolts
Mushroom Head Square Neck Bolts Specification
Stock Availability of Mushroom Head Square Neck Bolts
Mushroom Head Square Neck Bolts Ready Stock
Mushroom Head Square Neck Bolts Applications and Uses
Supply & Export Destinations of Mushroom Head Square Neck Bolts

| Dimensional Standards | ANSI B18.2.1, DIN-603/IS:2609/BS-4933/AS-1390/ISO-8677 |
|---|---|
| Metric Size | M10 to M100 |
| Imperial Size | 3/8 to 8" |
| Threads | UNC, UNF, ISO, BSW & ACME. |
| Length | 3/8" to 8″(ASME B18.5) |
| Standards | ASME,BS,DIN,ISO,UNI,DIN-EN |
| Bolts Types | Mushroom Head Square Neck Bolts, Carriage Bolts, Cup Square Bolts |
| Threads | METRIC, BSW, UNC, UNF, BSF or as required |
| Unified Thread Standard (UTS) | UNC, UNF, NPT, UNS, UNEF, NPTF |
| Application | Wind Tower, Nuclear Power, Railway, Automotive Industry, Construction, Electronic Industry |
| Bolts Packaging | Cartoon Box / Wooden Pallet / Wooden Box / Thread Protector |
| Bolts Forming | Hot Forged Bolts & Cold Forged Bolts |
| Certification | Dual Certified As per ASTM & ASME Codes |
| Nom. Dia. (d) | M6 | M8 | M10 | M12 | M16 | M20 | |
| Thread Pitch | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | |
| Thread Length (b) | L < 125mm | 18 | 22 | 26 | 30 | 38 | 46 |
| 125-200mm | 24 | 28 | 32 | 36 | 44 | 52 | |
| L > 200mm | – | 41 | 45 | 49 | 57 | 65 | |
| dk | Max. | 16.55 | 20.65 | 24.65 | 30.65 | 38.8 | 46.8 |
| f | Max. | 4.6 | 5.6 | 6.6 | 8.75 | 12.9 | 15.9 |
| k | Max. | 3.88 | 4.88 | 5.38 | 6.95 | 8.95 | 11.05 |
| v | Max. | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
| L | WEIGHT IN KG/1000 PCS | ||||||
| 16 | 6.90 | ||||||
| 20 | 7.60 | 13.80 | 22.70 | ||||
| 25 | 8.50 | 15.40 | 25.20 | ||||
| 30 | 9.60 | 17.00 | 27.70 | 45.70 | |||
| 35 | 10.70 | 19.00 | 30.20 | 49.40 | |||
| 40 | 11.80 | 21.00 | 32.70 | 53.10 | |||
| 45 | 12.90 | 23.00 | 35.80 | 56.80 | |||
| 50 | 14.00 | 25.00 | 38.90 | 61.20 | 119.00 | ||
| 55 | 15.10 | 26.90 | 42.00 | 65.60 | 126.00 | ||
| 60 | 16.20 | 28.90 | 45.10 | 70.00 | 133.00 | ||
| 65 | 17.30 | 30.90 | 48.20 | 74.40 | 141.00 | ||
| 70 | 18.40 | 32.90 | 51.30 | 78.80 | 149.00 | 247.00 | |
| 80 | 20.60 | 36.80 | 57.50 | 87.00 | 165.00 | 272.00 | |
| 90 | 22.80 | 40.80 | 63.70 | 96.00 | 181.00 | 297.00 | |
| 100 | 25.00 | 44.80 | 69.90 | 105.00 | 197.00 | 322.00 | |
| 110 | 27.20 | 48.80 | 76.10 | 114.00 | 213.00 | 347.00 | |
| 120 | 29.40 | 52.80 | 82.30 | 123.00 | 229.00 | 372.00 | |
| 130 | 31.60 | 56.80 | 88.50 | 132.00 | 245.00 | 397.00 | |
| 140 | 32.80 | 60.80 | 95.00 | 141.00 | 261.00 | 422.00 | |
| 150 | 35.00 | 64.80 | 101.00 | 150.00 | 277.00 | 447.00 | |
| 160 | 107.00 | 159.00 | 293.00 | 497.00 | |||
| 180 | 119.00 | 177.00 | 325.00 | 547.00 | |||
| 200 | 131.00 | 195.00 | 357.00 | 597.00 | |||
| LENGTH | D I A M E T E R | ||||
| 1/4" | 5/16" | 3/8" | 7/16" | 1/2" | |
| 1" | 1.07 | 1.859 | 2.844 | 4.322 | 6.165 |
| 1.1/4" | 1.243 | 2.05 | 3.125 | 4.708 | 6.667 |
| 1.1/2" | 1.397 | 2.335 | 3.492 | 5.102 | 7.163 |
| 1.3/4" | 1.551 | 2.581 | 3.846 | 5.631 | 7.776 |
| 2" | 1.706 | 2.825 | 4.198 | 6.112 | 8.432 |
| 2.1/4" | 1.864 | 3.071 | 4.554 | 6.588 | 9.058 |
| 2.1/2" | 2.023 | 3.316 | 4.907 | 7.072 | 9.671 |
| 2.3/4" | 2.182 | 3.561 | 5.258 | 7.564 | 10.309 |
| 3" | 2.34 | 3.805 | 5.612 | 8.039 | 10.941 |
| 3.1/2" | 2.653 | 4.296 | 6.274 | 8.993 | 12.225 |
| 4" | 2.971 | 4.785 | 7.022 | 9.96 | 13.477 |
| 4.1/2" | 3.287 | 5.274 | 7.728 | 10.917 | 14.706 |
| 5" | 3.605 | 5.767 | 8.446 | 11.905 | 15.974 |
| 5.1/2" | 3.922 | 6.258 | 9.158 | 12.853 | 17.241 |
| 6" | 4.241 | 6.748 | 9.862 | 13.812 | 18.519 |
| 7" | 15.674 | 20.921 | |||
| 8" | 17.606 | 23.364 | |||
Weight in kg per 100 Pcs in MM sizes.
| Length | M5 | M6 | M8 | M10 | M12 | M16 | M20 |
| 16 | 4 | 6.9 | |||||
| 20 | 4.5 | 7.6 | 13.8 | 22.7 | |||
| 25 | 5.1 | 8.5 | 15.4 | 25.2 | |||
| 30 | 5.9 | 9.6 | 17 | 27.7 | 45.7 | ||
| 35 | 6.7 | 10.7 | 19 | 30.2 | 49.4 | ||
| 40 | 7.5 | 11.8 | 21 | 32.7 | 53.1 | ||
| 45 | 8.3 | 12.9 | 23 | 35.8 | 56.8 | ||
| 50 | 9.1 | 14 | 25 | 38.9 | 61.2 | 119 | |
| 55 | 9.9 | 15.1 | 26.9 | 42 | 65.6 | 126 | |
| 60 | 10.7 | 16.2 | 28.9 | 45.1 | 70 | 133 | |
| 65 | 11.5 | 17.3 |
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