Product Information
- Hex Bolts has a hexagon head, part thread and part shank and is used to fasten material. Used to fasten objects together by inserting the bolt from the one end and securing it with either a nut on the other end or into a taped hole. A nut and bolt combination compresses everything together. To tighten the nut requires a socket and wrench or a spanner, If, while tightening the nut, the bolt turns with it, a second spanner or wrench is required to hold-on to the bolt while the nut is tightened. If thread length is critical there is a cross over where a hex bolt could be fully threaded. This is due to a gradual change in the fastener industry due to wholesalers wanting to reduce their stock holdings, now they only carry the shorter lengths as fully threaded. Therefore, if thread length is critical, always check our specifications or contact us prior to ordering
- Material / Coating: Zinc Plated is the most common fastener of plating due to its the low cost and shinny bright silver finish. A thin layer of zinc is applied by either electroplating or mechanically
- Grade v Class Difference: Metric fastenings are referred to as classes and imperial as grade. Both generally have head markings to determine grade and class. These bolts will have 10.9 stamped on them indicating 10.9 and are stronger then 8.8 high tensile. Imperial have either 3 lines for grade 5 and 5 lines for grade 8, both are regarded as high tensile.
- Material Strength: Bolts are made to class strength 10.9. They have a min yield strength of 940 and a min tensile strength is 1040 Mpa
- Thread Pitch (Metric): Pitch means the distance between the peaks of two threads along a screw, bolt, or fastener expressed in millimetres (mm). Used when referring to Metric parts. For example, a thread pitch of 1.50mm means that the distance between one thread and the next is 1.50mm
- Fastener Length: Is generally measured from the point where the surface of the material will be when the fastener is installed to the end of the fastener. Thus, fasteners with heads that sit above the surface are measured from under the head to the end of the fastener, while fasteners that sit flush with the surface are measured from the top of the head to the end of the fastener
- A guide to determining the approx. thread length, please note this is only a guide: upto and including 125mm = 2 x diameter + 6mm, over 125mm up to and including 200mm = 2 x diameter + 12mm, over 200mm = 2 x diameter + 25mm
- Measurements: Every effort has been made to ensure all measurements on our site are accurate and to the relevant standard, they should only be used as a guide. If you see a problem with our specifications please contact us
- Dimensions: Our stock is sourced from various suppliers, therefore differences may exist between batches such as height, width, visible stamped markings, appearance or actual finish
- Photos: are of the product but may not be the actual diameter, height, width, length you may require, always refer to the size in the description and additional specifications data provided prior to ordering
- Disclaimer: Technical data and specifications were researched and compiled from numerous industry sources for the sole purpose of providing basic information. All material is advisory only and its use by anyone is entirely voluntary. Reliance on it for any purpose by anyone is at the sole risk of that person, and The Fastener Warehouse is not responsible for any loss, claim or damages arising therefrom. In developing this information, The Fastener Warehouse has made a determined effort to present it accurately
- Updating our site: If you see any problems with any of our specifications or you require additional information please contact us
- Buy with confidence: ⇒ 13+ years experience selling online, > 24,000 stock lines, > 130 million pieces ex stock in Brisbane QLD
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Technical Specification
Hex Head Bolt
Type
Hex Head
Head Style
M20 (20mm)
Diameter Size
M20 x 2.50p Coarse
Size x Pitch
2.50mm
Thread Size
Metric - Coarse
Thread Type
Metric
System of Measurement
Right Hand
Thread Direction
3/4"
Closest Size in Imperial
Part Thread (PT)
Part Or Full Thread
55mm
Thread Length T
19.67 - 20.00mm
Product Diameter D
29.67 - 30.00mm
Across Flats Af
33.53 - 34.60mm
Across Corners Ac
12.30 - 12.72mm
Head Height H
Hex
Drive Type
30mm
Spanner Size
254.8 (kN)
Tensile
203.3 (kN)
Proof Load Kn
140.4 (kN)
Shear
370.1 (Nm)
Tightening Torque
Carbon Steel
Material
High Tensile Class 10.9
Grade
Zinc Plated
Finish
Moderate
Corrosion Protection Level
AS1110.1 / ISO 4014
Standard
Hobson Engineering
Brand
Brighton Best | Bremick Fasteners
Alternative Brands
BH10ZCM160130, B09MZ161302, 466253
MPN
9314818650922
UPC
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