4 in. One-Way Screws for Security Bar Window Guard (4-Pack) (4inch)

★★★★★ 4.6 145 reviews

$21.99
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Product details

Management number 218078955 Release Date 2026/05/03 List Price $8.80 Model Number 218078955
Category

The Grisham 4 in. one-way screw (4-pack) features a black powder-coated finish for weather durability. For use with all Grisham spearpoint window bar mounting brackets or fastener applications where possible tampering could occur. The non-reversing safety screw design inhibits removal of the fastener. For use in fastening all Grisham window bar mounting brackets and accessories Can be used in many security applications to inhibit potential tampering Non-reversing design impedes removal Rust-resistant finish 4-pack of x 4 in. long by 5/16 in. Dia with a 5/8 in. round head

  • 4 in. One-Way Screws for Security Bar Window Guard (4-Pack)
Brand Housagies
Color Black
Head Type Round
Size Name 4inch
Metal Type Alloy Steel
Unit Count 4.0 Count
Part Number h011
Thread Size 5/16" x
Drive System Cross
Grade Rating Standard
Manufacturer Grisham
Thread Class Standard
Thread Style Right Hand
Fastener Size 5/16 in x 4 in
Fastener Type Screw
Material Type Steel
Exterior Finish Black Oxide
Item Dimensions 1 x 1 x 4 inches
Number Of Items 1
Thread Coverage Partially Threaded
Screw Head Style Round
Screw Point Style Round Point
Set Screw Thread Type Unified National Coarse (UNC)
Compatible Groove Diameter 0.31 Inches

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4.6 out of 5
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145 ratings | 59 reviews
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