Security Fastener
Our Thoughts
Good For
Not Good For
Driver Availability
Maximum Torque (MFG Claim)
Minimum Quantity
Average Break-In Time
Cost Per Fastener
Samples Available
Keyway Type
Tool Control
Head Style Options
Material Options
Reusability
Tamper Resistance
Tool Compatibility
Installation Method
Visual Deterrence Level
Removal Risk if Tool Leaks
Lead Time to Purchase
Where to Buy
Kinmar Removable by Hafren Security Fasteners
The Kinmar® Removable fastener offers a flexible tamper-resistant option for low-risk applications, but its design leaves critical vulnerabilities. The flat top makes it easier to grip with locking pliers or attack with rotary tools, and although the manufacturer claims the driver socket is restricted, it can be found online for around $170—undermining the intended access control. Its use is best limited to low-value or controlled environments where convenience outweighs high security.
Kinmar Removable
- Low-Value Theft Prevention
- Controlled Access Environments
Kinmar Removable
- High-Value Theft Protection
- High-Frequency Removal
- Large-Scale Projects
- Applications Requiring Sizes Outside M6–M12
Kinmar Removable
Restricted: Specialist tooling, available only from Hafren approved distributors.
Kinmar Removable
Not specified; high torque for removable security.
Kinmar Removable
Not specified; likely moderate (e.g., 100 pieces).
Kinmar Removable
High: Requires specialist tooling, resists standard bits.
Kinmar Removable
$2.04 - $6.95
Kinmar Removable
Not specified; likely available for bulk orders.
Kinmar Removable
Patented two-indent keyway, resists standard bits.
Kinmar Removable
Controlled: Specialist tooling restricted to approved distributors.
Kinmar Removable
Button, countersunk.
Kinmar Removable
Steel, stainless steel; A2, A4 options.
Kinmar Removable
Reusable with Kinmar® tooling; designed for secure removal.
Kinmar Removable
High: Patented keyway enhances tamper resistance.
Kinmar Removable
Requires Kinmar® specialist tooling; incompatible with standard bits.
Kinmar Removable
Manual or power-driven with Kinmar® tooling.
Kinmar Removable
Moderate: Two-indent design signals security but less unique.
Kinmar Removable
Moderate: Restricted tooling reduces risk, but not bespoke.
Kinmar Removable
Not specified; likely 1–4 weeks. Contact Hafren.
Kinmar Removable
Shear Bolts by Hafren Security Fasteners
The Shear Bolt uses a breakaway hex head that snaps off at a calibrated torque, leaving behind a smooth, ungrippable surface. It's a simple and effective design for creating permanent installations. Once installed, removal typically requires drilling or destructive force. However, the initial install is limited by access to torque tools, and over-tightening or under-tightening can reduce performance.
Shear Bolts
- Single-Use Security
- Utility Fixtures and Covers
- Clean, Tool-Less Finish
Shear Bolts
- Applications Requiring Reuse
- Precise Torque-Sensitive Installs
Shear Bolts
None: One-way design, shears after installation.
Shear Bolts
14-25nm
Shear Bolts
Not specified; likely moderate (e.g., 100 pieces).
Shear Bolts
Extremely high: Shears, resists all removal attempts.
Shear Bolts
$2.67 - $32.91
Shear Bolts
Not specified; likely available for bulk orders.
Shear Bolts
One-way shear design.
Shear Bolts
None: Shears, no removal tools.
Shear Bolts
Cylindrical (bolt head).
Shear Bolts
Steel, stainless steel; A2, A4 options.
Shear Bolts
Non-reusable; permanent installation.
Shear Bolts
Extremely high: Shear design prevents removal.
Shear Bolts
No tools for removal; shear design.
Shear Bolts
Manual or power-driven; shears after installation.
Shear Bolts
High: Shear design signals permanence.
Shear Bolts
None: No removal tools exist.
Shear Bolts
Not specified; likely 1–4 weeks.
Shear Bolts
