PRODUCT DESCRIPTION

• Product: Cup Head Bolt Only
• Brand: Hobson Engineering
• Alternative Brands: Brighton Best | Bremick Fasteners | Inox World
• Material: Stainless Steel
• Class Grade: A4-70 G316
• Standard Made To: DIN603
• System of Measurement: Metric
• Size: M6 (6mm)
• Size & Thread Pitch: M6 x 1.00p Coarse
• Thread Pitch: 1.00mm
• Thread Direction: Right Hand
• Thread Type: Metric - Coarse
• Length: See Part Name
• Product Diameter: 5.82 - 6.00mm
• Head Diameter: 15.45 - 16.55mm
• Head Height: 3.12 - 3.88mm
• Square Under Head Width: 5.52 - 6.48mm
• Square Under Head Height: 3.40 - 4.60mm
• Closest size in imperial: 1/4"

Cup Head Coach Carriage Bolts are for securing wood to wood or steel, along with a corresponding nut to firmly clamp the materials together. Featuring a low-profile domed head and a square section beneath, these bolts resist rotation when the nut is tightened or removed. As the nut on the opposite end tightens, the square section embeds into the wood, eliminating the need for a second wrench. Widely used in structural support, timber framing, outdoor furniture, fencing, and retaining walls, they're commonly found in garden bench and table furniture, supporting seat and back slats.

Material / Coating: Crafted from Marine Grade Stainless Steel A4-70 G316, these bolts offer unparalleled resistance to corrosion, making them ideal for marine, coastal, chemical, and food environments. While stainless steel fasteners are generally non-magnetic, some may exhibit slight magnetism due to work-hardening during manufacturing. Some of our stock features a smooth finish with no head markings, and upon request, Test Certificates or Certificate of Conformity can be provided.

Can Stainless corrode?: Although stainless steel boasts corrosion resistance, improper installation or handling can still lead to corrosion. Utilizing tools and drills made from conventional steel during installation may cause issues. Even the hardest tools can leave steel particles on stainless steel surfaces or in pre-drilled holes, which can rust when exposed to moisture or oxygen, resulting in a tarnished finish.

Grade v Class Difference: While metric fastenings are classified by classes, imperial fastenings are graded. Both typically feature head markings indicating grade or class. These markings denote the material and strength of the fastener.

Thread Pitch (Metric): Refers to the distance between the peaks of two threads along a screw, bolt, or fastener, expressed in millimeters (mm). For example, a thread pitch of 1.50mm indicates a 1.50mm distance between adjacent threads.

Fastener Length: Generally measured from the point where the material surface will be upon fastener installation to the end of the fastener. This measurement differs for fasteners with heads sitting above or flush with the surface.

Measurements: While we strive for accuracy in all measurements on our site, they should be used as a guide. Please contact us if you notice any discrepancies in our specifications.

Dimensions: Our stock is sourced from various suppliers, so differences may occur between batches in terms of height, width, visible stamped markings, appearance, or finish.

Photos: While our photos depict the product, they may not reflect the exact dimensions you require. Always refer to the size in the description and additional specifications provided before placing an order.

Disclaimer: All technical data and specifications are compiled from industry sources for informational purposes only. Reliance on this information is voluntary, and any use thereof is at the sole risk of the user. We strive for accuracy in presenting this information.

Updating our site: Please contact us if you encounter any issues with our specifications or require additional information.

Buy with confidence: With over 13 years of online selling experience, offering over 22,000 stock lines, you can trust in our quality and service. 

SHIPPING POLICY

Shipping Policy

Postage and handling fee within Australia now Free when the invoice total is more than $100 and $9.50 for orders below. Unable to offer this service to Western Australia, WA is now $16.90 Flat Fee

Due to the heavy nature of our product and the size of Australia in some cases Jimco Pty Ltd will not be able to deliver for these prices, when this is the case we will discuss possible extra delivery costs prior to processing the order.

Delivery Times

Small Orders (less than 5kg combined weight and of small dimensions)
Where possible we send out all small orders using Australia Post, Startrack Express or Fastways.  This is usually when the orders are small in dimensions and weigh less than 5kg.

We cannot guarantee sending with any particular service and provide no guarantee of a next day delivery, however next day delivery is common when the customer chooses the express option.

All Other Orders
We have a range of shipping carriers which we utilise to distribute larger/heavier orders.

The following delivery times are a rough guide to how many days after dispatch your order will arrive.

• Perth Metropolitan 1 to 7 Days after dispatch, Depending on the location of the stock.
• Sydney Metropolitan Area 1 to 3 Days after dispatch, Depending on the location of the stock.
• Rest of NSW - 1 to 4 business days
• Melbourne, Adelaide - 1 to 5 Days after dispatch, Depending on the location of the stock.
• Brisbane Next Day
• Darwin & Hobart - 1 to 7 Days after dispatch, Depending on the location of the stock.
• Remote / Country - Please phone or email for ETA.

NOTE: The above times are estimates only and may depend on the location of the stock required to fulfill your order.

We reserve the right to ship from our warehouse or a supplier's warehouse direct so please check with us before ordering if you have a time sensitive order.