64Pcs 1/4''-20 Hex Head Bolts And Nut & Washer Assortment Kit 304 Stainless Steel
64Pcs 1/4''-20 Hex Head Bolts And Nut & Washer Assortment Kit 304 Stainless Steel
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1/4"-20 Hex Bolt, Nut & Washer Assortment Kit — 192-Piece 304 Stainless Steel Fastener Set in 4 Lengths
Running out of the right bolt length mid-project — or worse, grabbing a fastener that rusts out within a season — is one of the most avoidable frustrations in any workshop or job site. Whether you're assembling furniture, mounting equipment, or making repairs around the house, having a well-stocked assortment of corrosion-resistant 1/4"-20 hardware on hand means you're never one bolt short of finishing the job.
This 192-piece kit covers four bolt lengths in the 1/4"-20 UNC thread standard: 1-1/2", 2", 2-1/2", and 3" hex head cap screws, each paired with matching hex nuts, flat washers, and split spring washers. All hardware is 304 stainless steel for rust and oxidation resistance. The full set is organized in a compartmentalized storage box with separate sections for each size and hardware type.
Use this assortment for machinery and equipment assembly requiring 1/4"-20 fasteners, furniture and shelving hardware installation, electronic enclosure and panel mounting, lighting fixture installation, and general DIY home improvement projects. The four-length range covers the most common bolt lengths needed for through-bolting panels, brackets, and structural connections in the 1/4" diameter class.
✅ Key Features of This 1/4"-20 Bolt and Nut Assortment Kit
- 192-Piece Complete Assortment: Four bolt lengths (1-1/2", 2", 2-1/2", 3") each with matching hex nuts, flat washers, and spring washers — everything needed for a secure, vibration-resistant fastened joint.
- 304 Stainless Steel Throughout: All bolts, nuts, and washers are 304 SS for consistent corrosion resistance, tensile strength, and oxidation resistance across the entire kit — no mixed-grade hardware.
- Flat + Spring Washer Pairing: Each bolt set includes both a flat washer (load distribution) and a split spring washer (vibration resistance), providing maximum holding security without additional hardware.
- 1/4"-20 UNC Standard Thread: One of the most widely used SAE thread specifications — compatible with standard tapped holes, threaded inserts, and off-the-shelf 1/4"-20 hardware across tools and equipment.
- Compartmentalized Storage Box: Separate sections for each bolt length and hardware type keep all 192 pieces sorted and immediately accessible — no digging through a mixed bag to find the right size.
- Wide Application Range: Suitable for machinery assembly, furniture hardware, electronic enclosures, household appliances, lighting fixtures, and general DIY fastening wherever 1/4"-20 hardware is specified.
📐 Technical Specifications — 1/4"-20 Stainless Steel Bolt & Nut Kit
| Total Pieces | 192 pcs |
|---|---|
| Thread Size & Pitch | 1/4"-20 UNC (SAE) |
| Bolt Lengths Included | 1-1/2", 2", 2-1/2", 3" |
| Head Style | Hex head cap screw |
| Hardware Per Length | Hex head bolt + hex nut + flat washer + spring washer |
| Material | 304 stainless steel (all components) |
| Finish | Natural stainless (rust & oxidation resistant) |
| Thread Standard | SAE / UNC |
| Storage | Compartmentalized plastic storage box |
| Set Weight | See variant options |
❓ Frequently Asked Questions
What sizes are included in this bolt and nut assortment kit?
The kit includes four bolt lengths in 1/4"-20 thread: 1-1/2", 2", 2-1/2", and 3". Each length is paired with matching hex nuts, flat washers, and spring washers, totaling 192 pieces across all components.
What grade of stainless steel are these bolts and nuts made from?
All hardware in this kit is made from 304 stainless steel, which offers strong corrosion resistance, good tensile strength, and resistance to oxidation — suitable for both indoor and general outdoor applications.
What thread pitch do these bolts use?
All bolts in this kit use 1/4"-20 UNC (Unified National Coarse) thread, one of the most common thread standards in the SAE system. They are compatible with standard 1/4"-20 nuts, tapped holes, and threaded inserts.
Are these bolts suitable for outdoor use?
Yes. 304 stainless steel provides good rust and oxidation resistance for general outdoor environments. For highly corrosive environments such as marine or coastal applications, 316 stainless steel is generally recommended.
What is the difference between the flat washer and spring washer included?
Flat washers distribute the clamping load over a larger surface area to prevent damage to the workpiece. Spring washers (split lock washers) add tension to resist loosening from vibration. Using both together provides maximum holding security for the fastened joint.
What applications are these bolts and nuts suitable for?
This kit is suitable for machinery assembly, furniture hardware, electronic enclosures, household appliances, lighting fixtures, and general DIY fastening projects requiring 1/4"-20 hardware in lengths from 1-1/2" to 3".
How are the pieces organized in the storage box?
The kit comes in a compartmentalized storage box with separate sections for each bolt length and hardware type, keeping all 192 pieces sorted and easy to access without mixing sizes together.
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