Hillman 5/16 in. Diameter x 3/4 in. Length Grade 5 Heat-Treated Zinc Steel Hex Head Cap Screw, Fine Thread, 100-Pack
Regular price $27.99Hillman Grade 5 Hex Head Cap Screws, 5/16 in. x 3/4 in., 100-Pack
These Hillman Grade 5 hex head cap screws are heat-treated zinc-plated steel for dependable strength and wear resistance. Sized 5/16 in. diameter by 3/4 in. length with fine threads, they’re ideal for fastening into tapped holes or use with nuts in automotive, machinery, and general construction projects.
Key Features:
- Durable Grade 5 Steel: Heat-treated zinc finish resists wear and corrosion
- Hex Head Design: Washer face under head provides a better seal and load distribution
- Fine Thread: Partially threaded shank offers strong hold in metal assemblies
- Versatile Use: For tapped holes or paired with nuts; tighten with wrench or drill
- Bulk Pack Value: 100 screws for shop, jobsite, or maintenance stock
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Hillman |
| Diameter | 5/16 inch |
| Length | 3/4 inch |
| Material | Steel |
| Finish | Heat-treated zinc |
| Grade | Grade 5 |
| Thread Type | Fine |
| Threading | Partially threaded shank |
| Head Type | Hex head with washer face under head |
| Unit of Measurement | SAE |
| Number in Package | 100 pack |
| Packaging Type | Boxed |
| Tightening Method | Use wrench or drill/driver |
| Category | Hex Bolts |
| Package Dimensions (L x W x H) | 3.4 in x 3.5 in x 2 in |
| Package Weight | 2.6 lbs |
Frequently Asked Questions (FAQ):
Q: Are these fully or partially threaded?
A: They are Grade 5 screws that are partially threaded along the shank.
Q: What thread type do they use?
A: Fine thread.
Q: What tools are recommended for installation?
A: Tighten with a wrench or a drill/driver and the appropriate hex socket.
Q: Can these be used outdoors?
A: The zinc finish offers basic corrosion resistance; for harsh outdoor or marine environments, consider stainless or hot-dip galvanized fasteners.
Q: What size are these screws?
A: 5/16 inch diameter by 3/4 inch length.
Industrial polish in a precise, compact fastener
The clean geometry of a hex cap screw brings a tailored order to utility—streamlined, purposeful, quietly strong. Here, the heat-treated zinc sheen adds a subtle luminosity, a refined note against raw wood or cool steel. Style them with matte-black hardware and brushed metal accents to echo their crisp, engineered profile. Consider this your small-but-mighty essential for projects that demand durability with a disciplined aesthetic.
Stock up on these Grade 5 fine-thread cap screws today for reliable, ready-to-go fastening on every project.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.

