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
PENTA-PLUS by Bryce Fastener
Penta-Plus™ screws offer a robust tamper-resistant solution with a proprietary pentagon drive designed to resist standard tamper-resistant bits. The low-profile button head design deters gripping tools like locking pliers, and the optional Raptor™ Claw feature enhances torque resistance by embedding into the substrate. While the drive pattern is proprietary and bits are controlled by Bryce Fastener, the lack of unique keyways per customer may limit their suitability for applications requiring the highest level of security.
PENTA-PLUS
- Commercial Installations
- Municipal Infrastructure
- Situations Requiring Enhanced Tamper Resistance
PENTA-PLUS
- High-Security Applications Requiring Unique Keyways
- Installations Demanding Maximum Tamper-Proofing
- DIY Projects or Immediate Availability Needs
PENTA-PLUS
Restricted: Proprietary Penta-Plus™ bits, only available to Bryce customers, controlled via database.
PENTA-PLUS
132 in/lbs for ¼-20x1. Raptor™ head adds 20% more torque.
PENTA-PLUS
2,500 piece minimum, smaller minimum for large bolts.
PENTA-PLUS
Very high: Resists Torx-Pin, Hex-Pin; requires proprietary bit.
PENTA-PLUS
$0.50 - $15.00. Varies by size, quantity, and material.
PENTA-PLUS
Not stated; likely available for custom orders.
PENTA-PLUS
Pentagon-based, resists standard tamper-proof bits.
PENTA-PLUS
Strict: Bits exclusive to Bryce customers, controlled distribution.
PENTA-PLUS
Button, flat, socket, set screws; customizable with Raptor™ head.
PENTA-PLUS
302 and 316 stainless steel. 8740 Alloy, heat-treated alloys and custom coatings.
PENTA-PLUS
Reusable with Penta-Plus™ bit; high torque maintains integrity.
PENTA-PLUS
Very high: Pentagon design repels standard tools.
PENTA-PLUS
Requires Penta-Plus™ bit; incompatible with standard bits.
PENTA-PLUS
Power-driven or manual with Penta-Plus™ bit.
PENTA-PLUS
High: Pentagon design signals advanced security.
PENTA-PLUS
Low: Controlled bit distribution reduces risk.
PENTA-PLUS
4-6 weeks, stock items faster.
PENTA-PLUS
