Locking bolt | A2 | M8181
Stainless steel barrel bolt is a durable and reliable component for the secure closing of small doors and hatches. The product is manufactured from high-quality stainless steel, providing long-lasting protection against corrosion and wear. Suitable for both indoor and outdoor use.
APPLICATION AREA
The barrel bolt is primarily used for the safe and smooth locking of doors and gates. Thanks to the stainless steel, it is ideal for environments where corrosion resistance is required, such as outdoors and in damp areas. For saltwater and marine environments, acid-proof A4 is recommended.
TECHNICAL SPECIFICATIONS
Product type: Barrel bolt
Quality: A2 / AISI 304 stainless steel
Sales unit: Each
FREQUENTLY ASKED QUESTIONS (FAQ)
What characterizes a stainless steel barrel bolt and where is it best used?
A barrel bolt (also called a slide bolt or tower bolt) is a classic mechanical locking device for simple and secure closure:
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Smooth and direct locking: The bolt is manually pushed into the strike plate to quickly secure the door, hatch, or gate. Many models also feature a groove where the bolt is turned down to prevent it from sliding open due to vibrations.
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Versatile applications: Perfect for inspection hatches, storage doors, electrical cabinets, fence gates, and machine covers where you need a reliable and easily accessible closure.
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Compact and robust design: Takes up little space during installation but provides high resistance against shear forces and break-in attempts on smaller openings.
Why is stainless steel A2 (AISI 304) the best choice for barrel bolts?
Since barrel bolts are often mounted outdoors or in damp areas, a material that does not seize or rust is required:
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Excellent corrosion protection: A2 steel (1.4301 / AISI 304) withstands rain, snow, condensation, and changing weather conditions without forming surface rust or staining the substrate.
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Glides easily over time: Unlike painted or electro-galvanized steel bolts—where the surface coating wears off in the bolt channel, causing it to seize and rust—the stainless steel bolt maintains its smooth, friction-free operation.
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Clean and hygienic finish: The brushed or polished surface provides a clean, professional appearance that is just as suitable for interiors as it is for industrial environments.
How do you mount a barrel bolt correctly for optimal function?
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Align bolt and strike plate: Mount the bolt on the door/hatch and the strike plate on the frame. Ensure that the bolt runs completely freely and aligns exactly with the hole in the strike plate without catching on the edges.
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Account for material movement: Leave a small amount of clearance in the door gap so that the bolt operates easily even if wood or plastic expands due to moisture and temperature changes.
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Use matching screws: Always use stainless steel screws (A2/A4) with the correct screw head (often countersunk DIN 965 or pan head DIN 7981) so that the screw heads do not protrude and obstruct the bolt's movement.