1,020 Piece Grade 8 UNC Hex Head Cap Screw, Nut, and Washer Assortment Starter Kit
Keep the most-used Grade 8 coarse-thread bolts, nuts, and washers organized and ready in one labeled 24-hole metal drawer. This 1,020-piece kit covers 1/4" through 1/2" UNC diameters — the sizes a repair shop, fleet facility, or construction crew reaches for most.
What's Included
- Grade 8 hex head cap screws — 1/4", 5/16", 3/8", and 1/2" diameters, UNC coarse thread, multiple lengths per diameter
- Grade 8 hex nuts — matching every bolt size in the kit
- Flat washers and high-alloy lock washers — one set per diameter
- 24-hole metal drawer — pre-labeled and ready to stock
- 1,020 pieces total
Specifications
| Thread standard | UNC — Unified National Coarse |
| Grade | SAE J429 Grade 8 |
| Tensile strength | 150,000 PSI minimum |
| Finish | Yellow zinc |
| Diameters | 1/4", 5/16", 3/8", 1/2" |
| Total pieces | 1,020 |
| Approx. weight | 26 lbs |
| SKU | ASST24HHCSC8 |
Best For
- Fleet maintenance shops — high-strength coarse-thread bolts for vehicle chassis, suspension, and frame repair
- Construction crews — structural connections, framing hardware, and equipment repair on the job site
- Agricultural operations — equipment repair and implement maintenance requiring Grade 8 strength
- Industrial maintenance teams — keeping Grade 8 UNC stock on hand without managing individual SKUs
- General repair shops — a complete coarse-thread imperial starter kit in one organized drawer
About Grade 8
Grade 8 is the highest-strength SAE fastener grade commonly stocked in repair and industrial environments. At 150,000 PSI minimum tensile strength, it's the right choice for high-stress connections, structural applications, and anywhere a Grade 5 isn't strong enough.
The yellow zinc finish provides corrosion resistance for both indoor shop storage and outdoor or under-hood applications. UNC coarse thread is the standard choice for most structural and heavy-duty applications — faster to assemble than fine thread and less prone to cross-threading.
Need fine thread instead? See our Grade 8 UNF Assortment for suspension, engine, and precision applications.
Shipping & Ordering
- Ships within 1–2 business days from our warehouse
- Free shipping on orders $50 and over
- Volume pricing available — save up to 20% when ordering 3 or more kits
- B2B accounts: Fleet managers, facilities teams, and machine shops can apply for a business account with custom pricing and a dedicated rep — contact us to get started
Original: $189.95
-65%$189.95
$66.48
Description
Keep the most-used Grade 8 coarse-thread bolts, nuts, and washers organized and ready in one labeled 24-hole metal drawer. This 1,020-piece kit covers 1/4" through 1/2" UNC diameters — the sizes a repair shop, fleet facility, or construction crew reaches for most.
What's Included
- Grade 8 hex head cap screws — 1/4", 5/16", 3/8", and 1/2" diameters, UNC coarse thread, multiple lengths per diameter
- Grade 8 hex nuts — matching every bolt size in the kit
- Flat washers and high-alloy lock washers — one set per diameter
- 24-hole metal drawer — pre-labeled and ready to stock
- 1,020 pieces total
Specifications
| Thread standard | UNC — Unified National Coarse |
| Grade | SAE J429 Grade 8 |
| Tensile strength | 150,000 PSI minimum |
| Finish | Yellow zinc |
| Diameters | 1/4", 5/16", 3/8", 1/2" |
| Total pieces | 1,020 |
| Approx. weight | 26 lbs |
| SKU | ASST24HHCSC8 |
Best For
- Fleet maintenance shops — high-strength coarse-thread bolts for vehicle chassis, suspension, and frame repair
- Construction crews — structural connections, framing hardware, and equipment repair on the job site
- Agricultural operations — equipment repair and implement maintenance requiring Grade 8 strength
- Industrial maintenance teams — keeping Grade 8 UNC stock on hand without managing individual SKUs
- General repair shops — a complete coarse-thread imperial starter kit in one organized drawer
About Grade 8
Grade 8 is the highest-strength SAE fastener grade commonly stocked in repair and industrial environments. At 150,000 PSI minimum tensile strength, it's the right choice for high-stress connections, structural applications, and anywhere a Grade 5 isn't strong enough.
The yellow zinc finish provides corrosion resistance for both indoor shop storage and outdoor or under-hood applications. UNC coarse thread is the standard choice for most structural and heavy-duty applications — faster to assemble than fine thread and less prone to cross-threading.
Need fine thread instead? See our Grade 8 UNF Assortment for suspension, engine, and precision applications.
Shipping & Ordering
- Ships within 1–2 business days from our warehouse
- Free shipping on orders $50 and over
- Volume pricing available — save up to 20% when ordering 3 or more kits
- B2B accounts: Fleet managers, facilities teams, and machine shops can apply for a business account with custom pricing and a dedicated rep — contact us to get started
