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
STYKFIT 7 by Bryce Fastener
STYKFIT®7 fasteners are engineered for high-volume, precision-driven applications where both speed and tamper resistance are essential. The patented 7-fin drive system offers a tight, interference fit that enhances torque transfer and reduces cam-out. The SmartGrip™ tapered design ensures the screw adheres securely to the driver bit, facilitating one-handed installation and minimizing dropped screws. While the drive pattern isn't unique per customer, access to driver bits is controlled, providing a moderate level of security. The low-profile head design further deters tampering by resisting gripping tools.
STYKFIT 7
- High-Volume Production Environments
- Robotic and Automated Assembly Lines
- Applications Requiring Enhanced Tamper Resistance
STYKFIT 7
- High-Security or Unique Keyways
- DIY or Urgent Needs
STYKFIT 7
Restricted: Proprietary STYKFIT®7 bits, only available to Bryce customers, controlled via database.
STYKFIT 7
135 in/lbs for ¼-20x1. Raptor™ head adds 20% more torque.
STYKFIT 7
2,500 piece minimum, smaller minimum for large size bolts.
STYKFIT 7
Very high: Proprietary design resists standard tools.
STYKFIT 7
$0.50 - $15.00. Varies by size, quantity, and material.
STYKFIT 7
Not stated; likely available for custom orders.
STYKFIT 7
Proprietary stick-fit design, tight tolerance for production.
STYKFIT 7
Strict: Bits exclusive to Bryce customers, controlled distribution.
STYKFIT 7
Button, flat, socket, customizable with Raptor™ head.
STYKFIT 7
302 and 316 stainless steel. 8740 Alloy, heat-treated alloys and custom coatings.
STYKFIT 7
Reusable with STYKFIT®7 bit; designed for repetitive assembly.
STYKFIT 7
Very high: Stick-fit design enhances security for production use.
STYKFIT 7
Requires STYKFIT®7 bit; incompatible with standard bits.
STYKFIT 7
Power-driven for high-speed assembly with STYKFIT®7 bit.
STYKFIT 7
High: Proprietary design signals advanced security.
STYKFIT 7
Low: Controlled bit distribution reduces risk.
STYKFIT 7
4-6 weeks.
STYKFIT 7
