What is a mushroom head square neck bolt, and why is this type unique compared to other bolts of different styles?
Mushroom head square neck bolts are construction fasteners widely used in manufacturing industries. It looks a bit unique: the head of the insect is round, and it could be compared to a small dome of a mushroom; the part of the insect’s body just under the head is called the neck, and its shape is square. The square-shaped neck is very important as it prevents the bolt from rotating during installation, giving more secure joints. Mushroom Head Square Neck Bolts are different from hexagonal-headed bolts and are less likely to loosen up during vibrations; this makes them ideal for use where stability and reliability are paramount. They differ from all other forms of bolts by their design and their functional benefits.
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
Where are mushroom head square neck bolts commonly used?
Because of their design, mushroom head square neck bolts are useful in different industries. This kind of bolt is widely used in the construction industry, especially in timber frame construction and woodworking industries. They cannot rotate when tightening due to the square neck, thus ensuring proper interconnection of wooden parts.
The Mushroom Head Square Neck Bolts are common in automotive and transportation applications to make highly durable connections for car frames, suspensions and motors. Their resistance to vibration-induced loosening makes them very useful. Whether it is agricultural machines or playgrounds, bolts can be relied on to offer fastening solutions that are versatile across many areas.
What are the main advantages of a mushroom head square neck bolt?
As highlighted, the advantages of mushroom head square neck bolts are pegged on the design of the bolts. It has a square neck that does not twist during setting to give a good and tight fit. This is especially true since they relapse to a loose state because of vibrations after some time has elapsed. Further, it has a mushroom-head shape on one of its parts making it have a specific superficial appearance good for visible application in various projects.
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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