VIGRUE 636PCS Grade 8 Bolt Assortment Kit - Heavy Duty SAE Bolts

In this review the VIGRUE 636PCS Grade 8 Bolt Assortment Kit is evaluated for DIYers, mechanics and anyone who needs a heavy duty selection of SAE fasteners on hand. The bottom line: it is a solid, value-packed assortment of grade 8 alloy steel bolts and matching nuts and washers that covers common SAE sizes, making it especially useful for vehicle repairs and equipment maintenance where strength and corrosion resistance matter.

Key Features

• Grade 8 alloy steel: Offers high hardness and tensile strength for demanding fastening tasks.
• Yellow zinc finish: Provides corrosion resistance so parts hold up better outdoors or in workshop conditions.
• Comprehensive size range: Includes 1/4-20, 5/16-18, 3/8-16 and 1/2-13 SAE sizes with lengths from 1/2in to 2in to cover common repair needs.
• Includes nuts and washers: Comes with matching accessories so users do not need to buy complementary parts separately.
• Labeled transparent case: Organized compartments with professional size labels speed up part selection and storage.
• Wide applications: Useful for machinery, furniture, car and motorcycle repair and general DIY projects.

Who It's For

The kit is aimed at homeowners, hobby mechanics and small shops that need a durable selection of SAE fasteners for maintenance and repairs. The assortment of common sizes makes it a practical go-to kit for truck, motorcycle and equipment tasks where grade 8 strength is preferred.

It is less suited for precision assembly where metric sizes or specialty finishes are required, and users needing military or aerospace-grade traceability should look elsewhere. If you require only a single size in large volume, buying individual fasteners may be more economical than an assortment.

Pros & Cons

Pros

• High-strength grade 8 bolts and matching nuts provide reliable performance for heavy-duty repairs.
• Completeness: includes nuts and washers so no separate purchases are necessary.
• Transparent, labeled case keeps parts organized and easy to find.
• Good value: broad assortment covers many common repair scenarios.

Cons

• Some users report occasional issues with case durability and lid clips, so the box may not withstand rough handling.
• Size distribution may not match every users needs, so counts per size could feel uneven for specific projects.

Specifications

Brand	VIGRUE
Material	SAE Grade 8 alloy steel
Finish	Yellow zinc plated
Included sizes	1/4-20, 5/16-18, 3/8-16, 1/2-13
Length range	1/2in to 2in
Contents	Bolts, nuts and washers in a 636 piece assortment
Package	Transparent labeled storage box

Our Verdict

The VIGRUE 636PCS Grade 8 Bolt Assortment Kit is a practical and cost-effective choice for anyone who needs a ready supply of strong SAE fasteners. It combines durable grade 8 construction with a convenient, labeled case and a useful mix of bolts, nuts and washers, making it especially good value for general automotive and workshop use despite minor complaints about the plastic case.

Frequently Asked Questions

Are nuts and washers included?
Yes. The kit includes matching nuts and washers so separate purchases are not necessary.

What sizes are covered?
The assortment covers 1/4-20, 5/16-18, 3/8-16 and 1/2-13 SAE sizes with lengths from 1/2in to 2in.

Is the finish corrosion resistant?
The bolts are yellow zinc plated for improved corrosion resistance and wear protection.