We Are The Security Screw Solution Specialists.

We stock all security screw types including snake eyes screws, security lock nut, metric security screws, torx head, pin screws, socket cap screws, Tri-Wing, Opsit reverse thread, security screw removal tools and more. See the thousands of innovative styles and sizes of security screws.

Mack Fasteners Inc. is the World Leading supplier of Tamper Proof Screws.

Security screws & bolts, tamper resistant, all styles & types

Security screws & bolts, tamper resistant, all styles & types

We Are The Security Screw Solution Specialists.

We stock all security screw types including snake eyes screws, security lock nut, metric security screws, torx head, pin screws, socket cap screws, Tri-Wing, Opsit reverse thread, security screw removal tools and more. See the thousands of innovative styles and sizes of security screws.

SNAKE EYES^® SPANNER

The original Snake Eyes^® Spanner requires matching driver bit reducing the chances of unauthorized removal. Available in 18-8 stainless steel.

METRIC SNAKE EYES^®

Pan head machine screws. Oval head machine screw, flat head machine screws

PHILLIPS PIN-HEAD

SOCKET PIN-HEAD

Engineered for a high degree of tamper-resistance offering positive engaging, high torque transmission while resisting cam-out and tool wear.

METRIC SOCKET SECURITY

Metric socket pin-head, Button head cap screws, Flat head cap screws.

TORX^® PIN-HEAD

Maximum torque transfer and positive tool engagement means easier drive installation with less pressure and slippage.

METRIC TORX^®

Metric Torx® Pin-Head, Button head machine screw, Flat head machine screw.

TRI-WING^®

Economical Tri-Wing^® tamper-resistant screws are the common choice for high volume assembly operations while offering a minimal degree of security…more

OPSIT REVERSE THREAD

Opsit™ is a reverse thread sheet metal screw that installs counter-clockwise, thus, tightens if removal is attempted.

ONE WAY SEX BOLT

One Way Sex Bolts are only available as 10-24 Truss Heads in 18-8 Stainless Steel only. They may be ordered as a complete set, consisting of a male and female part, and sized according to the Total Partition Size.

ONE-WAY SLOTTED

Popular design installs with standard screwdriver. Reverse side cammed out to prevent unauthorized removal. Machine and sheet metal screws available.

TP3® SECURITY TO THE THIRD POWER

We’ve added TP3® to our powerful line-up of security fasteners. Its new triangular recessed drive offers three times the security …more

STANDARD NON-TAMPERPROOF TORX®

We know it’s hard to find Standard Torx® screws in stock. So we’ve added these non-tamperproof screws to our line. Available in pan-head she…more

SPANNER NUT / REMOVABLE SECURITY NUT

Zinc Alloy (non-ferrous rust resistant)

Drilled Head or Twin Hole – This versatile security fastener can do almost any job. A functional tamper proof screw with an aesthetically pleasing appearance. Ideal for public restrooms, telephone booths and many other applications.

BREAKAWAY NUTS / NON-REMOVABLE

Hex nut breaks away when nut is tightened leaving only the tamper-resistant conical portion. No special tool is required – uses standard wrench.

TOOLS AND KITS

…more

Call Us Toll Free

866-
674-
MACK (6225)

Security screws & bolts, tamper resistant, all styles & types

Security screws & bolts, tamper resistant, all styles & types

We Are The Security Screw Solution Specialists.

We stock all security screw types including snake eyes screws, security lock nut, metric security screws, torx head, pin screws, socket cap screws, Tri-Wing, Opsit reverse thread, security screw removal tools and more. See the thousands of innovative styles and sizes of security screws.

The original Snake Eyes® Spanner requires matching driver bit reducing the chances of unauthorized removal. Available in 18-8 stainless steel.

Pan head machine screws. Oval head machine screw, flat head machine screws

Engineered for a high degree of tamper-resistance offering positive engaging, high torque transmission while resisting cam-out and tool wear.

Metric socket pin-head, Button head cap screws, Flat head cap screws.

Maximum torque transfer and positive tool engagement means easier drive installation with less pressure and slippage.

Metric Torx® Pin-Head, Button head machine screw, Flat head machine screw.

Economical Tri-Wing® tamper-resistant screws are the common choice for high volume assembly operations while offering a minimal degree of security…more

Opsit™ is a reverse thread sheet metal screw that installs counter-clockwise, thus, tightens if removal is attempted.

One Way Sex Bolts are only available as 10-24 Truss Heads in 18-8 Stainless Steel only. They may be ordered as a complete set, consisting of a male and female part, and sized according to the Total Partition Size.

Popular design installs with standard screwdriver. Reverse side cammed out to prevent unauthorized removal. Machine and sheet metal screws available.

We’ve added TP3® to our powerful line-up of security fasteners. Its new triangular recessed drive offers three times the security …more

We know it’s hard to find Standard Torx® screws in stock. So we’ve added these non-tamperproof screws to our line. Available in pan-head she…more

Zinc Alloy (non-ferrous rust resistant)

Drilled Head or Twin Hole – This versatile security fastener can do almost any job. A functional tamper proof screw with an aesthetically pleasing appearance. Ideal for public restrooms, telephone booths and many other applications.

Hex nut breaks away when nut is tightened leaving only the tamper-resistant conical portion. No special tool is required – uses standard wrench.

…more

Call Us Toll Free

866-674-MACK (6225)

The original Snake Eyes^® Spanner requires matching driver bit reducing the chances of unauthorized removal. Available in 18-8 stainless steel.

Economical Tri-Wing^® tamper-resistant screws are the common choice for high volume assembly operations while offering a minimal degree of security…more

866-
674-
MACK (6225)