US security screws manufacturer 100% MADE IN THE USA

Call us: 480-503-3801

Lags that can take immense torque

Lag Thread Security Bolts

Choose Your Security Level

Low Security and High Security Lag Threads Available

If you need a powerful driving security screw with extra strong hold, our high security Key-Rex® or STYKFIT®7 Lag threaded security screws will exceed your expectations. Lag screws are rarely made into security screws because most security drives are not powerful enough to torque the screw without failing. Bryce fastener’s STYKFIT®7 and Key-Rex® security drives far exceed the required torque. This is important because security Lag screws are used in high torque applications such as pressure treated wood, concrete lag inserts, and pre-drilled plastic. Bryce Fastener’s security Lag bolts have been specified for wood signs in many National Parks. The oversized Raptor™ head holds better in wood than regular Hex or Penta Head security lag screws because of its bigger footprint.

Standard security level Penta Head lag bolts are available by special order. 

Made in Stainless Steel

Drive Types - Lag Thread Security Bolts

Head Styles

1230 N. Mondel Dr. Gilbert, Arizona 85233 Tel: 480-503-3801 Fax: 480-503-3834 Email: Facebook

Bryce Fastener is the world leader in high security locking bolts and fasteners, security screws, tamper proof and tamper-resistant screws.

KEY-REX™, Keyed-Lok®, Penta-Plus™, Hex-Pin™, and Tam-6lobe™ are registered trademarks of Bryce Fastener Mfg.
TORX® is a registered trademark of Acument Intellectual Properties, LLC
Copyright Bryce Fastener Mfg., Inc., 2018. All Rights Reserved. Prices Subject to Change Without Notice. Zero Theft is not Guaranteed.