Product Information
- Hex Set Screws are fully threaded with a hexagon head, if you require an unthreaded section (called shank) then you need to search for a hex bolt. Hex set screws are often threaded into something such as a piece of machinery, rather than being used with a nut
- Material / Coating: Stainless Steel A2-70 G304 is the most popular grade of stainless steel. It is aesthetically pleasing to the eye and very practical because of its excellent corrosion protection in most environments. Most products can be identified by the following markings: A2, A2-70, 304 or G304. Stainless steels are largely non-magnetic but it is common for stainless steel fasteners to show a small degree of magnetism which is a result of work-hardening during the manufacturing process
- Can Stainless corrode?: Stainless steel is corrosion-resistant but not corrosion-proof and corrosion can occur if the material is installed or handled incorrectly. The use of tools and drills made from conventional steel during the installation of stainless steel fasteners may also lead to problems. Even the hardest of tools can produce debris that leaves minute steel particles on the stainless steel fastener surfaces or in pre-drilled holes. It is these particles that often rust when exposed to moisture or oxygen and can result in a stained or tarnished finish to the stainless steel material
- Grade v Class Difference: Imperial fastenings are referred to as grades, and metric fastenings are referred to as classes. Both have marking systems that make it possible to determine grade and class. An example is a ½” UNC bolt with 5 lines on the head is grade 8 and 3 lines is grade 5, both are regarded as high tensile. Metric bolts are slightly different, if it has 4.6 then it is mild steel and 8.8 is high tensile. The markings on a stainless fastener indicate the grade of material and strength, e.g. material G304 grade will have one of the following markings: A2-70, G304, A2, 304 and G316 grade stainless will have one of the following: A4-70, G316, A4, 316
- 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 5" = 2 x diameter + 1/4", over 5" up to and including 8" = 2 x diameter + 1/2", over 8" = 2 x diameter + 1"
- 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 Fasteners Galore is not responsible for any loss, claim or damages arising therefrom. In developing this information, Fasteners Galore 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
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Technical Specification
| Item Length (From Under Head) | 75mm (22mm Thread) |
| Type | Bolt Only |
| Head Style | Hex Head |
| Diameter Size | 8mm | M8 |
| Size x Pitch | M8 x 1.25p Coarse |
| Bolt Size | M8 (8mm) |
| Thread Size | 1.25mm |
| Thread Type | Metric - Coarse |
| System of Measurement | Metric |
| Thread Direction | Right Hand |
| Length | 75mm |
| Closest Size in Imperial | 5/16" |
| Part Or Full Thread | Part Thread (PT) |
| Thread Length T | Choose your length to view |
| Thread Length Approx Int | 22mm |
| Product Diameter D | 7.78 - 8.00mm |
| Across Flats Af | 12.73 - 13.00mm |
| Spanner Size | 13mm |
| Across Corners Ac | 14.38 - 15.00mm |
| Head Height H | 5.15 - 5.45mm |
| Drive Type | Hex |
| Material | Stainless Steel |
| Grade | A2-70 G304 |
| Corrosion Protection Level | Excellent |
| Finish.1 | Stainless A2-70 G304 |
| Standard | DIN931 |
| Brand | Hobson Engineering |
| Alternative Brands | Brighton Best | Bremick Fasteners | Inox World |
| MPN | BH04PCM080075, BHHM4080752, 830303, XHBA2M8X75 |
| UPC | 9314818300247, 9337357207013, 662403886522 |
| Number In Pack | 5 |
