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Durable zinc-plated steel carriage bolts ideal for wood and metal fastening. Coarse-thread Grade 2 bolts with round heads provide smooth, secure installs in structural and DIY projects.
| Specification | Details |
|---|---|
| Diameter | 3/8 in. |
| Length | 5-1/2 in. |
| Material | Steel |
| Finish | Zinc-Plated |
| Head Style | Round |
| Thread Type | Coarse (UNC) |
| Grade | Grade 2 |
| Unit of Measurement | SAE |
| Packaging Type | Boxed |
| Number in Package | 50 |
| Model | 57187 |
| Brand | Hillman |
| Product Type | Carriage Bolt |
| Weight | 7.9 lbs |
Q: What nut size fits these bolts?
A: Use standard 3/8 in. coarse-thread (UNC) nuts and washers.
Q: Are these suitable for outdoor use?
A: Yes, the zinc-plated finish offers corrosion resistance for general outdoor applications; for harsh environments consider galvanized or stainless.
Q: Do they include nuts or washers?
A: No, this pack contains bolts only; nuts and washers are sold separately.
Q: What is the thread type?
A: Coarse UNC thread, compatible with SAE hardware.
Q: Can these be used in wood?
A: Yes, carriage bolts are commonly used in wood; the square neck locks into the wood to prevent turning during tightening.
These zinc-plated carriage bolts bring a refined, industrial clarity to any build—sleek round heads that read as clean, intentional hardware. The crisp metallic finish punctuates wood grains and painted surfaces with a subtle glint. Pair them with matte black brackets for contrast or echo the shine with brushed nickel accents. A small detail that elevates cabinetry, furniture, and architectural moments into a quietly luxurious statement.
Upgrade your projects with durable, zinc-plated Hillman carriage bolts—add this 50-pack to your cart today.
Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
US$40
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