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Red Head Dynabolt Hex Nut 1/2-Inch X 4 Inch Sleeve Anchor feature a split expansion sleeve over a threaded stud bolt body and integral expander, nut and washer. The anchor diameter equals hole diameter, with 1/4 - 3/4 inch diameter anchors available, up to 6-1/4 inch length. The sleeve design improves holding power. These sleeve anchors provides full 360 degree hole contact over large area and reduces concrete stress, with a heavy-loading capacity. They are preassembled for faster, easier installations and can be installed through object to be fastened. No pre-spotting of holes necessary. The anchors are zinc plated and should be installed with carbide tipped hammer drill bits. Available in hex head and six other head styles. Specs: Anchor Diameter and Drill Bit Size - 1/2-Inch inch; Effective Anchor Length - 4 inch; Bolt Diameter - 3/8 inch; Threads per Inch - 16; Min. Embedment - 1-7/8 inch; Max. Thickness of Material to be Fastened - 2-1/8 inch.
Osmani Silva
Reviewed in the United States on February 2, 2019
Great product I will buy it again.
Joe
Reviewed in the United States on July 19, 2018
Very nice product
Tophat
Reviewed in the United States on April 5, 2018
Great Value, comes loose in plastic bag. Performs as expected.
Shahryar Oliai
Reviewed in the United States on August 22, 2017
Used it for building a 40 foot plus boardwalk along a concrete foundation. It worked very well. Great price compared to buying it at big box stores.
Mike in Waynesboro PA
Reviewed in the United States on March 8, 2017
As Advertised, reliable brand.
juan carlos gonzalez
Reviewed in the United States on September 4, 2016
great product
Thomas A. Murphy
Reviewed in the United States on September 18, 2016
great product nice and strong
Mike
Reviewed in the United States on August 25, 2016
Arrived promptly - only 1 out of 25 bolts defective.
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