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Steel Lag Screw, Grade 2, Hot-Dipped Galvanized Finish, Flange Hex Head, External Hex Drive, Meets IFI 111/AISI 1006-1022/ASTM A153, 2-1/2" Length, Partially Threaded, 3/8"-7 Threads, Imported (Pack of 25)

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Product Specifications
Brand Name
Small Parts
Head Diameter
9/16  inches
Head Height
25/64  inches
Import Designation
Indentation Hardness
70  Rockwell B
Number of Items
Overall Length
2-1/2  inches
Part Number
Size Name
Thread Coverage
Partially Threaded
Thread Size
Specification for this product family (See all  products)
Drive Style
External Hex
Exterior Finish
Hot-Dipped Galvanized
Specification Met
IFI 111 , AISI 1006-1022 , ASTM A153
Manufacturer Grade
Grade 2
Material Type
Head Style
Flange Hex
Thread Style
Right Hand
System of Measurement

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Key Features

  • Grade 2 steel is often used in applications where toughness is the primary consideration
  • Hot-dipped galvanized finish offers excellent corrosion resistance
  • Flange hex head has six flat sides that a wrench can grip from the side in low-profile applications and a flange for additional grip with the mating surface
  • Meets IFI 111, AISI 1006-1022, and ASTM A153 specifications

Package Details

Shipping Weight: 2.05 pounds
Package Size: 4.6 x 4.5 x 1.8 inches

Product Description

The grade 2 steel lag screw with hot-dipped galvanized finish has a flange hex head and meets Industrial Fasteners Institute 111, American Iron and Steel Institute 1006-1022, and American Society for Testing and Materials ASTM A153 specifications. Grade 2 steel, composed of either low or medium carbon steel, is often used in applications where toughness is the primary consideration. The hot-dipped galvanized finish offers excellent corrosion resistance. The flange hex head has six flat sides that a wrench can grip to turn from the side, enabling use when there is no space above the head for a screwdriver. The flange acts like a washer to increase the fastener's bearing surface and distribute the clamping force over a larger area, providing grip and reducing damage to mating surfaces.

Lag screws, also called lag bolts, are hex-headed threaded fasteners commonly used for wood-fastening applications where load bearing is a factor. Usually longer than wood screws, lag screws are inserted into a drilled hole and secured with a nut.

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