Hillman 370796 Hex Head Sleeve Anchor 5/16 x 1-1/2 in - Durable Pack

Our review of the Hillman 370796 hex head sleeve anchor finds it to be a straightforward, heavy-duty option for anyone fastening into concrete, brick or block. The 100-pack and simple expansion design make these anchors especially useful for installers and DIYers who need consistent anchoring for door and window frames, shelving or mounted fixtures. The bottom line: if you need reliable mechanical anchoring with moderate corrosion resistance and a requirement to pre-drill, this product delivers dependable strength and value for repetitive anchoring tasks.

Key Features

• Expansion design: The sleeve expands as the nut is tightened, pulling the working end up through the sleeve to create a secure mechanical hold in concrete, brick or block.
• Versatile base use: Suitable for a variety of base materials, these anchors work well in masonry, concrete and block for common mounting tasks.
• Hex head fastener: The hex head and nut allow for straightforward installation with standard wrenches or sockets for consistent torque control.
• Zinc plating: A zinc-plated finish offers durability and moderate corrosion protection for indoor and some sheltered outdoor applications.
• Bulk quantity: The 100-pack gives installers and homeowners plenty of anchors for multiple projects without frequent repurchasing.

Who It's For

This sleeve anchor is aimed at contractors, handymen and serious DIYers who regularly mount fixtures to masonry or concrete and need a repeatable, mechanical anchoring method. The included quantity and robust expansion action make it practical for jobs like door and window frame installation, wall-mounted shelving and TV or fixture mounting.

Those who should look elsewhere include users who require stainless steel or high-corrosion marine-grade anchors for constant outdoor exposure, and anyone who prefers adhesive or chemical anchoring systems for hollow or highly irregular substrates. Pre-drilling is required, so users seeking a no-drill solution should consider different fasteners.

Pros & Cons

Pros

• Good anchor strength and reliable expansion action for solid masonry and concrete applications.
• Bulk 100-pack reduces trips to the store and keeps spare fasteners on hand for multiple jobs.
• Zinc-plated finish provides moderate corrosion resistance and long service life in many indoor or sheltered settings.
• Hex head design makes installation fast and compatible with common tools.

Cons

• Requires pre-drilling and is not suitable for hollow materials without additional support hardware.
• Zinc plating gives only moderate corrosion protection compared with stainless options for harsh outdoor environments.

Specifications

Brand	Hillman
Type	Hex head sleeve anchor
Size	5/16 x 1-1/2 in
Quantity	100 per pack
Finish	Zinc-plated
Intended base materials	Concrete, brick, block

Our Verdict

The Hillman 370796 sleeve anchor is a practical, cost-effective choice for anyone anchoring fixtures into solid masonry or concrete. Its expansion mechanism and hex head installation make it dependable for repetitive jobs, and the 100-pack is good value for installers who need consistent, strong anchors. For high-corrosion outdoor use or hollow-wall applications, choose a different material or anchor type.

Frequently Asked Questions

Do these anchors work in brick as well as concrete?
Yes, the sleeve expansion design anchors reliably in concrete, brick and block when installed to the correct embedment depth.

Is pre-drilling required?
Yes, a pilot hole must be drilled into the base material before inserting the sleeve anchor so the expansion mechanism functions properly.

Are they corrosion resistant for outdoor use?
They are zinc-plated for moderate corrosion protection; for long-term exposure in harsh outdoor or coastal environments a stainless steel option is recommended.