Choosing the right 1 inch bolts and nuts can impact strength, compatibility, and corrosion resistance in everyday projects. This article highlights five high-quality 1″ stainless steel options, covering common sizes like 1/4-20 and 5/16-18. Each product includes material details, threading, and included hardware to help you compare quickly for assemblies, furniture, and DIY builds.
| Product | Size / Thread | Material | Includes |
|---|---|---|---|
| DGOL 20 Sets 1/4-20 x 1″ | 1/4-20, 1″ bolts | 304 Stainless Steel | 20 bolts, 20 nuts, 20 flat washers, 20 lock washers |
| BNUOK (18 Sets) 5/16-18 x 1″ | 5/16-18, 1″ bolts | 304 Stainless Steel | Lock nuts, flat washers, lock washers |
| QXSKSLH 1/4-20 x 1″ Set | 1/4-20, 1″ bolts | 304 Stainless Steel | Bolts, nuts, flat washers, lock washers |
| Skvltvfyt (25 Sets) 1″ Hex Bolts | 1″ bolts, 1/4-20 | 304 Stainless Steel | Bolts, nuts, flat washers, lock washers |
| BNUOK (18 Sets) 1/4-20 x 1″ | 1/4-20, 1″ bolts | 304 Stainless Steel | Lock nuts, flat washers, lock washers |
Note: All listed products are made from 304 stainless steel for corrosion resistance, with standard threads and complete hardware kits designed for easy quick-installation in a variety of environments. The following sections provide detailed looks at each option.
DGOL 20 Sets 1/4-20 x 1″ Flat Head Hex Bolt Nuts Kit
Material and construction: All parts are 304 stainless steel, including hex bolts, nuts, flat washers, and lock washers. Thread size is 1/4-20 with a 1 inch bolt length. The kit contains 20 bolts, 20 nuts, 20 flat washers, and 20 lock washers. The kit is designed for assemblies that require reliable corrosion resistance and consistent torque transmission. The flat heads provide a clean finish on applications where the bolt head should sit flush.
Use cases: Suitable for light-to-moderate fastening projects, furniture assembly, cabinetry, and outdoor installations where exposure could be a concern. The nylon insert in lock nuts helps resist loosening under vibration, though for critical load applications you may want to use additional locking methods. The kit’s uniform parts simplify stocking and reordering for ongoing projects.
BNUOK (18 Sets) 5/16-18 x 1″ Hex Head Screw Bolts
Overview: This set provides 5/16-18 hex bolts of 1 inch length, paired with lock nuts and washers. Made from 304 stainless steel with a bright finish, these fasteners deliver smoother threads, reduced burrs, and better torque transmission. The nylon insert in the lock nuts resists loosening under vibration or torque, improving installation stability in machinery, frames, or heavy-duty assemblies.
Specifications: Thread diameter 5/16″, pitch 1/18″, bolt length 1″. Head diameter ~0.5″. Meets ASME B 18.2.1 specifications. The kit is well-suited for projects that require a larger bolt head surface to distribute load and resist pull-through, with strong corrosion resistance for indoor and outdoor use.
QXSKSLH 1/4-20×1 Complete Set
Contents: The set includes 10 bolts, 10 hex nuts, 10 flat washers, and 10 lock washers, all made from 304 stainless steel. Thread diameter is 1/4″ with a 1″ length, 20 TPI. The high corrosion resistance of 304 stainless steel makes these suitable for kitchens, bathrooms, and other damp environments where rust prevention is essential. The kit offers a compact bundle for small-to-medium projects requiring consistent 1 inch fastening components.
Skvltvfyt (25 Sets) 1/4-20 x 1″ Hex Bolts
Highlights: The set provides 25 bolts, 25 nuts, 25 flat washers, and 25 lock washers. Made from 304 stainless steel with a bright finish, these 1″ hex bolts offer clean threading, resistance to corrosion, and a professional appearance. The nylon-insert lock nuts resist loosening under vibration, making them suitable for equipment housings, shelving brackets, and automotive applications where movement is expected. The kit is designed for reliable, repeated use in various assemblies.
BNUOK (18 Sets) 1/4-20 x 1″ Hex Head Bolts
Overview: This 1/4-20 x 1″ bolt set includes lock nuts, flat washers, and lock washers. The components are crafted from 304 stainless steel to deliver corrosion resistance and durability. The bolt head design supports stable torque transmission, while the nylon insert in the lock nuts helps resist loosening under vibration. Detailed specs include 1/4″ thread diameter and 1/20″ pitch, head diameter approximately 0.437 inches, aligning with ASME B 18.2.1 standards.
weideer 30pcs 1/4-20 Nuts and Bolts Kit
Content and construction: This set contains 1/4-20 nuts and bolts in a 30-piece kit, made from 304 stainless steel with zinc plating for additional corrosion resistance. Bolts feature flat head sockets for a flush finish, and the nylon insert lock nuts provide secure fastening under vibration. Thread size is 1/4-20 with a 1 inch length, suitable for furniture frames, cabinetry, and lightweight machinery assemblies. The kit emphasizes durability and ease of installation for household projects.
Buying Guide: Key Considerations For 1 Inch Bolts And Nuts
- Material and corrosion resistance: Stainless steel (304 or 316) offers good rust resistance for most indoor and outdoor uses. Consider 316 for highly corrosive environments (saltwater, chemicals).
- Thread and length: Common options include 1/4-20 and 5/16-18 with 1 inch length. Verify thread pitch to ensure compatibility with existing nuts and taps, and ensure the length suits the material thickness being joined.
- Locking features: Nylon insert lock nuts resist loosening under vibration, while split or spring lock washers provide locking action. For high-vibration or high-torque applications, combine locking methods or use thread-locking compounds.
- Head style and seating: Flat-head bolts provide a flush finish; hex bolts offer robust torque transmission. Choose head styles that match your aesthetic and the surface accessibility for driving tools.
- Kit completeness: Look for sets that include the corresponding nuts, flat washers, and lock washers to avoid hunting for matching components later.
- Application environment: Indoors, outdoors, or wet areas may dictate different coatings or stainless steel grades. Always consider exposure to humidity, salts, and chemicals.
- Quality and standards: Reputable brands often meet ASME B 18.2.1 specifications for hex bolts and fasteners, ensuring dimensional accuracy and performance.
- Packaging and quantity: If you’re stocking tools for future projects, consider larger sets that balance cost per piece with the convenience of having spare parts on hand.
Across the options above, you’ll find reliable 1 inch fasteners with varied head designs, locking features, and included hardware. For projects where weight, aesthetics, and durability matter, these 1 inch bolts and nuts from 304 stainless steel provide dependable performance in many common applications.