Kulak D-HEAD BOLTSINGLE C/W CAPTIVE WASHER DBI-SS-10-30
$18.54 inc GST
Designed for secure pillar box and electrical enclosure fastening using a tamper-resistant D-head design with captive washer. Made from 304 stainless steel for durability and corrosion resistance in harsh environments. Ideal for electricians and contractors requiring reliable, tool-controlled access solutions.

Fast Shipping
On All Orders

Australian Company
Owned & Operated

15+ Years
Industry Experience

Easy Returns
30 Days Peace Of Mind
25 in stock
Description
Secure Fastening Solution for Pillar Box Systems
The Kulak D-Head Bolt Single with Captive Washer DBI-SS-10-30 is a high-security fastening solution engineered for pillar box assemblies and electrical enclosures. Designed specifically to deter unauthorised access, it provides electricians and contractors with a reliable method of securing critical infrastructure.
Manufactured from premium 304 stainless steel, it ensures excellent corrosion resistance and long-term durability in demanding Australian environments. The M10x30mm sizing offers broad compatibility with standard electrical enclosure systems used across residential, commercial, and industrial installations.
Anti-Tamper Design with Efficient Installation
Featuring a distinctive D-head profile, this bolt significantly reduces the risk of unauthorised removal, making it ideal for public-facing or high-security electrical enclosures. The integrated captive washer improves installation efficiency by keeping components securely attached during handling and maintenance. It requires a dedicated tube spanner (DB-TBSS) for controlled tightening and removal, ensuring access is limited to authorised personnel only.
For faster workflows, a D-SOCKET adapter enables cordless drill compatibility, streamlining repetitive installation tasks. An allen head alternative is also available for varied project requirements. The captive washer also reduces installation time by keeping components pre-assembled, minimizing dropped parts on site. It is widely used in electrical pillar box systems requiring secure tamper-resistant fastening solutions.
Built for Trade Professionals and Harsh Environments
Designed for licensed electricians, electrical contractors, and facilities maintenance teams, this bolt supports secure access control across a wide range of electrical infrastructure. It enhances installation safety, reduces tampering risks, and ensures compliance with secure enclosure standards. Its stainless steel construction performs reliably in coastal, outdoor, and high-moisture conditions common across Australia.
Engineered for utility cabinets, switchboards, and distribution enclosures, it supports efficient workflows on fast-paced project sites. Suitable for utility infrastructure, switchboard enclosures, and outdoor electrical cabinets where security is critical. Helps standardise maintenance procedures across contractor teams using compatible tooling systems. Engineered for reliability in demanding trade environments. Perfect for fast-paced electrical installation projects. Trusted trade solution.
Key Specs
- M10 x 30mm bolt size
- 304 stainless steel construction
- D-head anti-tamper design
- Captive washer included
- Requires DB-TBSS tube spanner
- Compatible with D-SOCKET drill adapter
- Corrosion resistant for outdoor use
- Suitable for pillar box assemblies
Ideal For
- Licensed electricians
- Electrical contractors
- Facilities maintenance teams
- Construction and building services
- Switchboard installers
- Utility infrastructure technicians
- Security-focused enclosure installations
- Industrial and commercial projects





