When you need reliable spacers for electronics, automotive, or DIY projects, 3/8 inch bore steel spacers offer solid strength and precise clearance. This guide highlights five top 3/8″ spacers, detailing dimensions, material quality, and typical uses. Each product supports 3/8″ screws or bolts and 304 stainless steel options deliver corrosion resistance for long-lasting performance. Read on to compare options and find the right fit for your project needs.
| Product | Inner Ø (ID) | Outer Ø (OD) | Length |
|---|---|---|---|
| uxcell Stainless Steel Spacer — 10 pcs | 3/8 in | 3/4 in | 1 in |
| uxcell Stainless Steel Spacer — 5 pcs | 3/8 in | 1/2 in | 1-1/2 in |
| Wulankd Seamless Spacer | 3/8 in | 1/2 in | 1-1/2 in |
| Metal Spacers Online Mild Steel Spacer | 3/8 in | 3/4 in | Choose Length |
| Hillman 58596 Thick Spacer | — | 3/4 in | 3/4 in |
The table above summarizes key dimensions for quick comparisons. All options support 3/8″ screws, bolts, or rods where specified. Material quality varies, with many options using 304 stainless steel for strength and corrosion resistance, and others using plain steel for solid, budget-friendly spacers. Consider environmental exposure, load requirements, and compatibility with your hardware when selecting a spacer. The five featured products provide a range of lengths, OD options, and finishes to suit electronics enclosures, automotive brackets, and DIY assemblies.
uxcell Steel Spacers — 10 Pieces, 3/8″ Bore
These spacers measure 3/8″ inside diameter, 3/4″ outside diameter, and 1″ in length. They are designed to fit 3/8″ screws, bolts, or rods. Made from 304 stainless steel, they offer strong structural integrity and excellent corrosion resistance, making them suitable for electronics enclosures, mechanical assemblies, and automotive components. The full dozen-pack ensures spare parts are readily available for multiple assembly points, reducing downtime in production or hobby projects. This option emphasizes durability in environments where moisture or chemical exposure could affect lower-grade metals.
uxcell Spacer — 5 Pieces, 3/8″ Bore
This set features a 3/8″ bore with a 1/2″ outer diameter and 1-1/2″ length, offering a compact profile for tighter assemblies. Stainless steel construction delivers robust strength and corrosion resistance, making these spacers well-suited for electronic chassis, automotive brackets, and workshop projects. The 1-1/2″ length allows for more complex spacing without adding excessive bulk, while the uniform dimensions help achieve precise alignments in assemblies with multiple fasteners.
Wulankd 10pcs — 3/8″ ID x 1/2″ OD x 1-1/2″ Length
These seamless steel spacers use a sturdy zinc-plated construction to resist corrosion and rust, ensuring durability in demanding environments. The 1-1/2″ length, 3/8″ inner diameter, and 1/2″ outer diameter configuration offer a balanced fit for mechanical fixtures, mounting brackets, and DIY projects that require precise spacing. They install easily and provide clean, unobtrusive alignment for multiple fasteners in a single assembly.
Mild Steel Spacer — 3/4″ OD x 3/8″ ID, 2″ Length (2 Pack)
This set provides a 3/4″ outer diameter and 3/8″ inner diameter with a 2″ length, offered as a two-pack. It is suitable for roomier spacing in chassis, brackets, and tool mounts where a stronger, unthreaded spacer is acceptable. While not stainless, mild steel offers reliable machinability and cost-effectiveness for internal hardware or non-corrosive environments. Proper finishing or protective coatings can extend service life in humid or outdoor spaces.
Sysarua 10 Pack Stainless Steel Spacer
These spacers are precisely manufactured to 1/2″ outer diameter, 3/8″ inner diameter, and 5/8″ length. Made from 304 stainless steel, they deliver consistent dimensions and strong corrosion resistance. They are suitable for electronics assemblies, automotive components, and DIY projects where accurate spacing is crucial. The 10-pack quantity helps with multiple mounting points or spare parts for ongoing projects, while the plain finish supports straightforward integration into various color schemes and assemblies.
uxcell 2pcs Spacer — 3/8″ Bore, 3/4″ OD, 1″ Length
This 2-piece set provides the same 3/8″ bore, 3/4″ outer diameter, and 1″ length as larger packs, offering a compact option for tight assemblies or incremental spacing in small projects. The spacers are crafted from 304 stainless steel for consistent strength and corrosion resistance, suitable for electronics housings, automotive brackets, and industrial fittings. A practical choice when you only need a pair for a specific mounting point or testing alignment before full-scale production.
Buying Guide: Key Purchase Considerations
- Material and corrosion resistance: Stainless steel options (notably 304) provide better corrosion resistance, making them ideal for moisture-prone environments or outdoors. Plain mild steel is cheaper but requires finishing for outdoor use.
- Inner and outer diameters: Ensure the ID matches the screw or rod you plan to use, and the OD provides the clearance or counterbore you need without interfering with adjacent components.
- Length and engagement: Longer spacers increase separation between parts but may reduce compactness. Choose a length that achieves the required gap while maintaining structural integrity.
- Finish and compatibility: Plain finishes suit most metal-to-metal assemblies, but plated or polished finishes can reduce galling and ease installation in precision equipment.
- Quantity and availability: Bulk packs save time for projects with multiple mounting points; keep spare spacers on hand for maintenance or future builds.
- Applications: Electronics enclosures, automotive brackets, DIY rigs, and construction hardware all benefit from consistent spacers for alignment, thermal management, and load distribution.
When selecting a 3/8″ spacer, assess environmental exposure, required strength, and the need for corrosion resistance. The options above span stainless steel and mild steel with a range of lengths and diameters, enabling precise alignment across electronics, automotive, and industrial projects. Always verify compatibility with your fasteners and mounting surfaces before purchasing. This ensures reliable performance and predictable assembly outcomes in American-made or imported hardware contexts.