A lath screw is a specialized self-drilling sheet metal screw predominantly used in construction to secure light-gauge materials to metal studs.
Understanding the Lath Screw
A lath screw, also known by several alternative names, is a type of fastener engineered for efficiency and strong attachment in specific applications. It combines a unique head design with self-drilling capabilities, making it a staple for certain fastening tasks in metal construction. Its design eliminates the need for pre-drilling, significantly streamlining installation processes.
Key Characteristics
Lath screws are identified by several distinct features that make them suitable for their intended purpose:
- Self-Drilling Tip: This crucial feature means the screw creates its own hole as it's driven, eliminating the need for pre-drilling pilot holes. This saves significant time and effort during installation.
- Phillips Drive: Designed for compatibility with standard Phillips head screwdrivers or bits, ensuring easy and secure installation with common power tools.
- Round Wafer Head: The low-profile, wide round wafer head offers a large bearing surface. This design distributes the clamping force over a broader area, providing excellent pull-through resistance and a neat, flush finish, which is particularly beneficial when securing thin materials like lath.
- Sheet Metal Screw: Categorized as a sheet metal screw, it is designed with sharp, aggressive threads that effectively cut into and grip metal, ensuring a secure hold.
Common Applications
The primary use of a lath screw is to securely fasten various materials to metal studs. Its design makes it ideal for:
- Attaching Lath: A core application involves securing lath (a base material for plaster or stucco) to metal framing systems.
- Securing Caddy® Type Fasteners: These screws are frequently used to attach various Caddy® type fasteners—such as clips, straps, or hangers for conduit, cable, or fixtures—directly to metal studs.
These applications highlight the screw's utility in both interior finishing and electrical/mechanical installations within commercial and residential construction.
Dimensions and Specifications
Lath screws are manufactured in specific sizes to meet common construction requirements, ensuring compatibility and optimal performance for their intended uses.
| Characteristic | Detail |
|---|---|
| Diameter | #8 screw |
| Length Range | From 9/16" to 1-1/4" |
| Common Length | 1/2" (most frequently ordered size) |
The #8 diameter offers a robust yet manageable size, while the range of lengths accommodates varying material thicknesses and application needs. The 1/2" length is particularly prevalent, indicating its widespread use for standard lath and fastener attachments.
Alternative Names and Terminology
Due to their specialized nature and specific applications, lath screws are often referred to by several other names in the construction and electrical trades. Understanding these aliases can be helpful for identification and ordering:
- Sharp Point
- Wafer
- Peanut
- SMS (an abbreviation for Sheet Metal Screw)
- RWH (an abbreviation for Round Wafer Head)
- M/T head
This comprehensive list ensures clarity, especially when communicating with suppliers or colleagues who might use different terminology.
