Simpson Strong-Tie 1/4" x 3" Phillips Flat-Head Sleeve-All Anchor is a pre-assembled, expanding sleeve anchor engineered for secure fastening into solid base materials including concrete and brick. Designed by Simpson Strong-Tie to handle everything from demanding structural applications to everyday renovation work, this carbon steel anchor features a zinc plated finish that helps guard against corrosion in typical indoor and light-duty outdoor environments. The Phillips flat-head profile sits flush with the fixture surface for a clean, low-profile installation, making it a practical choice for securing fixtures where a protruding fastener head is not desirable.

Key Features

• Pre-assembled expanding sleeve design - the anchor arrives ready to install with no separate components to align, speeding up installation and reducing the risk of assembly errors on the job site.
• Phillips flat-head style - sits flush after installation for a neat, finished appearance, ideal for applications where hardware visibility must be minimized.
• 1/4" anchor diameter with matching 1/4" drill bit requirement - a single drill bit handles the entire hole, simplifying tool setup and keeping the bore size consistent for a secure, snug fit.
• 3/16" bolt/rod diameter at 24 TPI - the fine thread count provides strong clamping force and reduces the risk of loosening under vibration or dynamic load conditions.
• Up to 1 7/8" maximum fixture thickness - accommodates a broad range of fixture depths, giving installers flexibility across varied material stacks without needing a different anchor length.
• Carbon steel construction with zinc plating - delivers solid structural strength while the zinc plated finish provides a layer of corrosion resistance suitable for dry and protected environments.
• Compatible with all types of solid base materials - performs reliably in concrete and brick, reducing the need to stock multiple anchor types for different substrates on the same project.

Why This Product

• One drill bit, one anchor, one process - because the anchor diameter and required drill bit diameter are both 1/4", you drill and install with the same bit size, cutting down on tool changes and simplifying workflow on fast-paced job sites.
• Versatile across solid base materials - whether the substrate is concrete or brick, this expanding sleeve anchor is rated for all types of solid base materials, reducing the guesswork of anchor selection when substrates vary across a project.
• Flush-mount head keeps surfaces clean - the Phillips flat-head design allows the anchor to seat flush with the fixture surface, making it the right choice for applications where a raised head would interfere with overlying materials or finishes.
• Simpson Strong-Tie quality for structural confidence - Simpson Strong-Tie anchoring products are designed to perform in demanding structural applications, giving professionals and serious DIYers a dependable solution backed by an established engineering-focused manufacturer.

Specifications

• Brand: Simpson Strong-Tie
• Diameter (in.): 1/4
• Bolt/Rod Diameter (in.): 3/16
• Drill Bit Diameter (in.): 1/4
• TPI: 24
• Max. Fixture Thickness (in.): 1 7/8
• Head Type: Phillips Flat Head
• Material: Carbon Steel
• Coating: Zinc Plated
• Finish: Zinc Plated
• Country of Origin: China

Available Pack Options

• SL25300PFP1: 1 Ea
• SL25300PF: 50 Pk
• SL25300PF -5: 250 Pk

Frequently Asked Questions

What base materials is this sleeve anchor compatible with?

This Sleeve-All expanding anchor is designed for use in all types of solid base materials, including concrete and brick. It is not intended for hollow or unsupported substrates where expansion cannot generate clamping force against solid material.

What drill bit size do I need to install this anchor?

A 1/4" drill bit is required to create the pilot hole for this anchor. Because both the anchor diameter and the required drill bit diameter are 1/4", no bit substitution or upsizing is needed - one bit handles the complete bore.

What is the maximum fixture thickness this anchor can accommodate?

This anchor supports a maximum fixture thickness of 1 7/8 inches. Fixtures or material stacks thicker than this measurement may not allow the anchor to reach and engage the base material properly, so always verify the combined fixture depth before selecting this anchor.

Is this anchor pre-assembled or does it require setup before installation?

This Sleeve-All anchor comes pre-assembled, meaning the expanding sleeve and bolt are already combined before installation. No separate assembly is required - simply drill the pilot hole to the correct diameter and drive the anchor directly into the base material.

Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.