316 stainless steel bolts and fasteners are useful when moisture, salt air, or outdoor exposure makes corrosion resistance a priority. The Bolt Supply hex bolt assortment is best for buyers who need several common bolt sizes; its single-size hex bolts suit a known repair. For smaller fastening jobs, choose the Phillips flat-head or pan-head screw kit, while the long eye bolts are best for wood-based rigging and tie-down projects.
| Product | Best For | Key Detail |
|---|---|---|
| Hex bolt assortment | Keeping common bolt sizes on hand | Includes 1/4-, 5/16-, and 3/8-inch diameters |
| Phillips flat machine screw kit | Flat-head machine screw needs | 12 common sizes; fully threaded |
| Phillips pan machine screw kit | General machine screw needs | 12 common sizes |
| 316 stainless eye bolts | Wood rigging and tie-downs | 1/2 x 6 inches; full-thread design |
| 3/8-16 hex bolts | Replacing a known bolt size | 1-1/4-inch length; 15 pieces |
Bolt Supply 316 Hex Bolt Assortment
This assortment is best for buyers who handle varied repairs and want several common hex bolt sizes available. The product listing identifies Type 316 stainless steel and says the kit includes 10 commonly used diameters and lengths, including 1/4-, 5/16-, and 3/8-inch diameters. It is selected for its assortment format and focus on common fastener sizes.
The listed material is described as offering greater resistance to rust and corrosion than common stainless kits. Check the included size list before ordering: the provided product details do not specify every length or quantity in the kit. Choose this if you need a range of sizes; avoid it if you already know you need one exact bolt specification.
Bolt Supply Phillips Flat Machine Screw Kit
This Type 316 kit is best for buyers who need Phillips-drive flat-head machine screws in multiple sizes. The listing says it includes 12 popular or common sizes, and that all screws are fully threaded. Its assortment makes it a practical choice when the exact required size may vary between jobs.
The listing highlights resistance to rust and corrosion compared with common stainless kits. Confirm that the screw head style, drive, and dimensions suit the assembly before purchase. Choose this flat-head version when its head profile is specifically required; it is not the same style as the pan-head kit below.
Bolt Supply Phillips Pan Machine Screw Kit
This assortment is best for buyers who need Phillips-drive pan-head machine screws across a selection of sizes. It contains 12 popular or common sizes, according to the listing, and is made from Type 316 stainless steel. It was selected as a distinct option for projects that call for a pan head rather than a flat head.
The product description cites rust and corrosion resistance compared with common stainless kits. The provided details do not list the individual screw dimensions or quantities, so review the package specifications to verify they match your application. Choose this kit when the required head style is pan; choose the flat-head kit when that profile is needed instead.
T316 Stainless Steel 6-Inch Eye Bolts
These eye bolts are best for buyers who need a screw-in attachment point for wood posts or beams. The listing specifies an eight-pack of 1/2 x 6-inch Type 316 stainless steel eye bolts with a full-thread design extending to the base of the eye. It describes uses involving rope, cable, hooks, and clasps, including dock rigging, fence lines, and tie-down projects.
The listing identifies marine-grade material and resistance to rust, corrosion, and salty air. This is a wood screw-style eye bolt, not a general-purpose hex bolt or machine screw. Check the dimensions and confirm the wood and loading requirements suit the intended project; the supplied details do not state a load rating.
Bolt Supply 3/8-16 Hex Bolts
This pack is best for buyers replacing or installing a specific bolt size rather than purchasing an assortment. It contains 15 Type 316 stainless steel hex-head bolts with a listed size of 3/8-16 x 1-1/4 inches. The product details emphasize resistance to rust and corrosion.
Choose this option when the diameter, thread specification, and length match the job. Its limitation is the fixed size: it does not provide the variety of the assortment kit. Verify the required bolt length and thread before ordering, since the listing only describes this particular specification.
Buying Guide: How To Choose 316 Stainless Steel Fasteners
What does Type 316 stainless steel offer?
Type 316 is commonly selected for fasteners exposed to damp or coastal conditions. The product listings emphasize rust and corrosion resistance, including resistance to salty air for the eye bolts. Material choice alone does not confirm that a fastener is appropriate for every environment or structural application, so match it to the project requirements.
Should you buy an assortment or a fixed-size pack?
An assortment is more useful when you need several sizes for maintenance or varied projects. A fixed-size pack is a better fit when you know the exact dimensions and need multiple matching pieces. Check the full size list and piece count in the product details; the supplied descriptions do not provide every assortment dimension or quantity.
Which head or fastener style do you need?
Hex bolts, machine screws, and eye bolts serve different purposes. The hex products are conventional bolt choices, while the machine screw kits offer Phillips flat or pan heads. The eye bolts provide an eye and a wood-screw-style threaded shank. Match the head, drive, thread, length, and receiving material to the application.
What should you verify before ordering?
- Confirm diameter, thread specification, and length against the existing fastener or project plan.
- For machine screws, check head style and the listed size range.
- For eye bolts, verify the dimensions and intended wood installation; do not assume an unstated load rating.
- For marine or outdoor use, consider exposure conditions and follow project-specific installation guidance.
Frequently Asked Questions
Are 316 stainless steel bolts suitable for marine environments?
They are often selected for marine exposure because the product listings describe corrosion resistance, including resistance to salty air for the eye bolts. Suitability still depends on the specific application and conditions.
What is the difference between a hex bolt and a machine screw?
A hex bolt has a hexagonal head for wrench-style fastening. The listed machine screws use Phillips drives and come in flat or pan head styles. Choose the fastener specified for the assembly.
What does 3/8-16 x 1-1/4 inches mean?
It identifies the listed bolt as 3/8 inch in diameter, with 16 threads per inch and a 1-1/4-inch length. Confirm the measurement conventions required by your project before ordering.
Can the eye bolts be used for any tie-down load?
No load capacity is included in the supplied product details. Verify the eye bolt, wood, installation, and load requirements for the intended use rather than assuming a capacity.
Which machine screw kit should I choose?
Choose the flat-head kit when the assembly calls for a flat head, and the pan-head kit when it calls for a pan head. Both listings describe Type 316 Phillips screws in 12 common sizes.