M6 Zinc Coach Bolts & Nuts | DIN 603 ISO 8677

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£0.24

(Inc. VAT)

£0.20

(Ex. VAT)

SKU:

PARENT1043

Material:

4.8 Zinc Plated Steel

Overview

Product Description

M6 × 1.0 Grade 4.8 Zinc-Plated Steel Coach Bolts with Nuts

These M6 coach bolts, also known as carriage bolts or cup-square bolts, have a smooth domed head and a square neck beneath the head. The square neck locates in the material and helps prevent the bolt from turning while the supplied plain nut is tightened.

Manufactured from property class 4.8 steel with a zinc-plated finish, they are suitable for general-purpose timber-to-timber, timber-to-metal and light fabrication applications. Each coach bolt is supplied with a matching M6 plain hexagon nut.

Product specifications

Thread size: M6
Thread pitch: 1.0mm metric coarse
Bolt material: Carbon steel
Bolt property class: 4.8
Finish: Zinc plated
Head style: Smooth domed cup head
Neck style: Square neck
Approximate head diameter: 15mm
Supplied with: Matching M6 plain hexagon nut
Available lengths: 20mm to 150mm
Available pack sizes: 1, 5, 10, 20, 50, 100, 250, 500 and 1,000

Available lengths

Thread size	Length	Head diameter	Thread pitch
M6	20mm	Approximately 15mm	1.0mm
M6	25mm	Approximately 15mm	1.0mm
M6	30mm	Approximately 15mm	1.0mm
M6	35mm	Approximately 15mm	1.0mm
M6	40mm	Approximately 15mm	1.0mm
M6	45mm	Approximately 15mm	1.0mm
M6	50mm	Approximately 15mm	1.0mm
M6	55mm	Approximately 15mm	1.0mm
M6	60mm	Approximately 15mm	1.0mm
M6	65mm	Approximately 15mm	1.0mm
M6	70mm	Approximately 15mm	1.0mm
M6	75mm	Approximately 15mm	1.0mm
M6	80mm	Approximately 15mm	1.0mm
M6	90mm	Approximately 15mm	1.0mm
M6	100mm	Approximately 15mm	1.0mm
M6	110mm	Approximately 15mm	1.0mm
M6	120mm	Approximately 15mm	1.0mm
M6	130mm	Approximately 15mm	1.0mm
M6	140mm	Approximately 15mm	1.0mm
M6	150mm	Approximately 15mm	1.0mm

Length measurement: Coach-bolt length is measured from beneath the domed head to the end of the bolt. Threaded length can vary according to the overall bolt length.

Standards information

DIN 603: Traditional dimensional standard for metric mushroom-head square-neck coach bolts.
ISO 8677: International dimensional standard for metric cup-head square-neck bolts with a large head.
ISO 898-1: Mechanical-property standard applicable to carbon-steel bolts with specified property classes, including class 4.8.
BS 4933:2010: Related current British standard for metric cup-head and countersunk-head bolts supplied with hexagon nuts.

The recorded M6 head diameter of approximately 15mm corresponds with the DIN 603 / ISO 8677 dimensional pattern. BS 4933:2010 uses different M6 cup-square dimensions, so conformity with BS 4933 is not claimed for this product.

The supplied item is described as a matching plain nut. A particular nut property class or dimensional standard should not be assumed unless separately confirmed.

Typical applications

Timber-to-timber connections
Timber-to-metal fastening
Fencing, gates and garden structures
Benches, furniture and timber frames
General fabrication and repair work

Installation guidance

Drill an appropriately sized clearance hole through the components.
Seat the square neck securely in the timber or matching square aperture before tightening.
Tighten the supplied nut from the threaded end while preventing damage to the zinc-plated finish.
Use a suitable washer beneath the nut where the load needs to be spread across timber or softer material.
Washers are not stated as included and should be ordered separately if required.
For structural or safety-critical work, follow the application designer’s specified bolt grade and tightening requirements.

Related categories and technical information

Specifications are provided as a guide. If a dimension, thread length, supplied nut specification or formal standards compliance is critical to your application, please contact us for confirmation before ordering.