3/8 x 2 Lag Screw Kit (50 Pack) - Exterior Grade Black Ruspert

In this review of the 3/8 x 2 Lag Screw Kit, the bottom line is simple: this kit is for anyone needing a reliable, weatherproof hardware pack for exterior woodworking and mounting tasks. The reviewer finds the set especially useful for contractors, deck builders, and hobbyists because it pairs Grade A307 lag bolts with USS flat washers and a durable Black Ruspert ceramic coating that resists corrosion better than standard galvanized fasteners. The kit's 50-count quantity makes it convenient for medium projects, and the review will focus on build quality, finish, and practical installation notes.

Key Features

• Size and fit: The 3/8 in diameter and 2 in length provide a common, versatile fastener that works well for medium-duty connections in wood and timber.
• Complete kit: The pack includes 50 Grade A307 lag screws and 50 USS flat washers, removing the need to source matching washers separately for consistent hardware performance.
• Weatherproof coating: Black Ruspert is a four-layer ceramic coating that offers greater rust resistance than standard galvanized finishes, making these bolts suitable for exterior use.
• Code compliance: Meeting ASTM A307 and ASME B18.2.1 gives confidence that the fasteners are produced to industrial/commercial standards for strength and dimensions.
• ACQ compatibility: The coating and material are suitable for use in ACQ treated lumber, which is important for long-lasting outdoor builds.
• Installer note: A pilot hole is recommended for clean installation and to protect the coating and wood from splitting.

Who It's For

This kit is best for tradespeople, contractors, and serious DIYers tackling exterior projects such as deck framing, mounting heavy fixtures to treated lumber, or installing outdoor displays. The combination of quantity and coating makes it a practical choice when multiple consistent fasteners are required.

Those who need specialty lengths, stainless steel corrosion resistance for marine environments, or a decorative polished finish should look elsewhere; this kit focuses on industrial/commercial durability rather than showpiece aesthetics.

Pros & Cons

Pros

• Good value: fifty bolts and fifty washers cover medium projects without repeated ordering.
• Durable finish: the Black Ruspert coating provides enhanced rust resistance for outdoor exposure.
• Sturdy performance: customers report the bolts hold well and resist shearing under load.

Cons

• Finish imperfections: some users note the coating can chip or flake during installation with an impact driver, so care or pilot holes are advised.

Specifications

Diameter	3/8 in
Length	2 in
Head width	9/16 in
Kit contents	50 lag screws, 50 USS flat washers
Washer OD	1 in
Coating	Black Ruspert 4-layer ceramic
Standards	Meets ASTM A307 and ASME B18.2.1

Our Verdict

The 3/8 x 2 Lag Screw Kit is a practical, cost-effective choice for exterior construction tasks where strength and corrosion resistance matter. It is particularly well suited to installers working with treated lumber who need a ready supply of matched bolts and washers; those needing pristine decorative finishes or marine-grade stainless should consider alternatives.

Frequently Asked Questions

Are these bolts suitable for treated lumber?
Yes, the Black Ruspert coating and Grade A307 material are specified as suitable for use in ACQ treated lumber.

Should I drill pilot holes?
Yes, a pilot hole is recommended to ease installation, protect the coating, and reduce the risk of splitting the wood.

Do the washers match the bolts?
Yes, the kit includes 50 USS flat washers sized with a 1 in outside diameter to pair with the 3/8 in lag screws.