5/16" X 3" ONE WAY SCREW STEEL FINISH BLACK
- Buy 20 or more $0.39 Save 11%
- Buy 50 or more $0.34 Save 23%
| Weight | 0.046250 |
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5/16" X 3" ONE WAY SCREW STEEL FINISH BLACK
Secure your fixtures with our 5/16" x 3" One-Way Screws, designed for permanent, tamper-proof installations. Made from durable steel with a protective black finish, these security fasteners are ideal for public-facing hardware, signage, and equipment where preventing removal is critical.
- Tamper-Resistant One-Way Drive
- Industrial-Grade Steel
- Black Oxide for Corrosion Resistance
- Security & Public Fixtures
This 5/16" x 3" one-way screw is manufactured from industrial-grade steel, often case-hardened to resist tampering and vandalism. The defining feature is its unique slotted head, engineered to be driven in with a standard slotted screwdriver but impossible to remove with the same tool. This design provides a simple yet highly effective permanent fastening solution. The black finish, typically a black oxide coating, offers a clean aesthetic and provides a moderate level of corrosion resistance suitable for many indoor and some sheltered outdoor environments.
These security fasteners are essential for MRO and fabrication projects requiring a permanent bond. They are widely used to mount signs, public fixtures, license plates, partitions, and protective casings where unauthorized removal must be prevented. The simplicity of installation combined with the high level of security makes them a go-to choice for facility managers, contractors, and manufacturers in Los Angeles looking to protect assets in high-traffic areas without requiring specialized installation tools.
Specifications
- Material: Industrial-Grade Steel (often case-hardened)
- Standards: Conforms to common industrial dimensional standards (e.g., ANSI/ASME)
- Strength/Tensile: Suitable for light to medium-duty security fastening applications
- Dimensions: Diameter: 5/16 inch, Length: 3 inches
- Finish: Black Oxide
- Certifications: Material certifications available upon request.
Applications
- Public Facilities: Securing bathroom partitions, signage, plaques, and public furniture.
- Commercial & Retail: Installing security grilles, protective covers, and display fixtures.
- Manufacturing: Permanently attaching nameplates, access panels, and safety guards on machinery.
- Automotive & Transit: Affixing license plates, vehicle accessories, and interior panels.
Target Users
Ideal for contractors, facility maintenance teams, fabricators, and government agencies who need to install permanent, tamper-proof hardware in public or secure areas.
Finish Options
This product comes with a standard black oxide finish for a clean appearance and mild corrosion resistance. For applications requiring higher corrosion protection, other options like zinc-plated or stainless steel one-way screws may be available via special order. Contact our Los Angeles team for details.
How to Measure
Screws are measured by two primary dimensions: Diameter and Length. The diameter (5/16") is the major thread diameter. The length (3") is measured from the point where the head sits flush with the surface to the tip of the screw.
Example: Order Specification Example: 'One Way Screw, 5/16" x 3", Steel, Black Finish, Quantity: 500'
Order Checklist
- Product name and required dimensions
- Grade/material specification and quantity
- Cutting instructions (if applicable)
- Surface finish requirements
- Certifications required (Mill Test Report - MTR)
- Special handling or delivery requirements
Quick Facts
- Product
- 5/16" X 3" ONE WAY SCREW STEEL FINISH BLACK
- Material
- Industrial-Grade Steel
- Standards
- ANSI/ASME Dimensional Standards
- Key Properties
- Tamper-resistant one-way drive for permanent installation. Black oxide finish for mild corrosion resist...
- Primary Applications
- Security Fastening, Public Fixtures, Signage
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock a wide range of one-way security screws in various diameters and lengths. Common sizes are available for immediate pickup at our Los Angeles warehouse.
Custom sizes and cutting services are available.
Contact for Sizing-
5/16" X 3" ONE WAY SCREW STEEL FINISH BLACK$0.44
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