Value Collection 31971 Hammer Drive Concrete Anchor 1/4 in 100pk

Product Description

The VALUE COLLECTION 31971 is a hammer drive concrete anchor designed for fast, tool-free installation into concrete, masonry, and similar hard base materials. The anchor body is constructed from nylon with a Zamac alloy pin, and the fastener carries a zinc-plated finish for corrosion resistance in typical interior applications. At 1/4 inch in diameter with a 1-inch overall length (OAL) and a truss head style, this anchor suits light-duty through medium-duty anchoring tasks where a low-profile head is needed. Each package contains 100 pieces. Licensed tradespeople and skilled installers working on electrical conduit supports, junction box attachments, and mechanical system brackets commonly specify this anchor type.

This anchor is suited for use in poured concrete, concrete block, and cinder block substrates. The 1/4-inch drill requirement allows use with standard hammer drills and matching carbide-tipped masonry bits. The truss head profile sits low against the work surface, making it a practical choice in finished spaces where a countersunk or protruding head would interfere with cover plates or trim. Sold in a 100-piece pack, this SKU supports both single-trade service work and small-scale commercial rough-in tasks.

Key Features

• Hammer drive installation — no screwdriver or wrench required after hole is drilled
• Nylon body with Zamac alloy pin construction for reliable expansion in hard substrates
• Zinc-plated finish provides corrosion resistance for typical indoor environments
• Truss head style delivers a low-profile seating surface against the base material
• 1/4-inch diameter matches standard masonry bit sizing for straightforward drill selection
• 100-piece pack quantity supports production-rate installations

Compatibility

Designed as an OEM-style replacement and general-use hammer drive anchor for light-duty to medium-duty concrete and masonry anchoring applications where a 1/4-inch diameter, 1-inch OAL truss head fastener is specified.

Installation Notes

Installation is performed by drilling a 1/4-inch diameter hole to the required depth using a hammer drill and carbide-tipped masonry bit, then inserting the anchor and driving the pin flush with a hammer. Always wear appropriate eye protection when drilling into concrete or masonry. Verify substrate integrity and minimum edge distance requirements per applicable building codes before installation. Do not overdrive the pin, as this can fracture the nylon body and reduce holding strength.