Fasteners - Bolts

Importance of Indoor Bolts

Indoor bolts are critical for ensuring structural integrity and long-term stability in dry, protected environments where heavy weather exposure is not a factor. Zinc-plated or electro-galvanised finishes provide moderate corrosion protection, making these bolts well suited to warehouses, workshops, and residential or commercial interiors.

Whether you are joining timber elements, assembling equipment, or securing steel fixtures, selecting the correct indoor bolt type directly impacts reliability and safety. Properly specified bolts help maintain clamping force, resist vibration, and reduce the risk of loosening or joint movement over time.

Precision-threaded designs also make installation and future maintenance more efficient. Bolts can be tightened accurately, removed, and re-installed during upgrades or servicing without compromising the integrity of the connection.

Indoor Bolt Types

Our indoor bolt range covers a variety of head styles and thread configurations to suit different materials and joint designs:

Hex Bolts: A classic choice for interior framing, racking, and equipment mounting. Zinc-coated for light corrosion resistance and available in multiple diameters and thread pitches.
Coach Bolts (Carriage Bolts): Ideal for timber-to-timber or timber-to-steel joints. The smooth, domed head and square neck provide a clean visible finish while preventing rotation during tightening.
Flanged Bolts: Bolts with an integrated flange under the head to spread load across a wider surface. Excellent for mounting brackets, plates, and frames to internal supports without requiring separate washers.
Socket Head Bolts: Compact cylindrical heads with an internal hex drive, commonly used in machinery, equipment frames, and tight-clearance assemblies where a low profile is required.
Fully & Partially Threaded Options: Full threads for consistent grip along the entire engagement length, or partial threads for higher shear strength in structural joints where the unthreaded shank carries load.

Applications

Indoor bolts from Craftsman Hardware are suited to a wide range of interior construction and assembly tasks:

Framing & Joinery: Secure timber structures, mezzanine floors, and partition walls using coach or hex bolts matched to the load and substrate.
Interior Steel Fabrication: Fasten brackets, steel frames, and shelving systems to columns, beams, and internal support members in commercial and industrial spaces.
Machinery Assembly: Mount motors, housings, guards, and equipment enclosures with precision-fitted hex or socket head bolts for robust, serviceable connections.
Furniture & Fixture Installation: Use clean-looking coach bolts or compact socket heads to assemble workstations, display units, racking, and cabinetry where appearance and access both matter.

By pairing the right indoor bolt type with the material and load, you achieve secure, serviceable joints that perform reliably over the life of the installation.