Hillman 5/16 in. Diameter x 1-1/4 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 100-Pack
Regular price $29.99Hillman Grade 5 Zinc Hex Head Cap Screws, 5/16 in. x 1-1/4 in., 100-Pack
These Hillman hex head cap screws are Grade 5 steel with a heat-treated zinc finish for strength and wear resistance. Sized 5/16 in. diameter by 1-1/4 in. length, they feature coarse threads and a washer face under the head for secure fastening in wood or metal applications.
Key Features:
- Grade 5 Strength: Heat-treated steel provides higher tensile strength for demanding projects
- Corrosion-Resistant Finish: Zinc plating helps protect against rust and wear
- Washer Face Head: Built-in bearing surface under the hex head improves sealing and load distribution
- Coarse Thread Design: Reliable grip and easier starts in tapped holes or with nuts
- Contractor Pack: 100-piece boxed pack for efficient stocking and jobsite use
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Hillman |
| Diameter | 5/16 inch |
| Length | 1-1/4 inch |
| Material | Steel |
| Finish | Heat-treated zinc |
| Grade | Grade 5 |
| Thread Type | Coarse (USS) |
| Head Type | Hex head with washer face |
| Threading | Partially threaded shank |
| Units per Pack | 100 (boxed) |
| Package Height | 3.5 in |
| Package Width | 4.3 in |
| Package Length | 4.3 in |
| Package Weight | 3.4 lbs |
Frequently Asked Questions (FAQ):
Q: Are these fully threaded?
A: They are partially threaded along the shank, typical of Grade 5 hex cap screws.
Q: What tools are needed for installation?
A: Tighten with a wrench or a drill/driver using the appropriate socket or hex bit.
Q: What is the thread type?
A: Coarse thread (USS).
Q: Can these be used outdoors?
A: The zinc finish offers basic corrosion resistance; for harsh or marine environments, consider stainless or hot-dipped galvanized fasteners.
Q: What size are these screws?
A: 5/16 inch diameter by 1-1/4 inch length.
A Polished Workhorse for Clean, Confident Connections
Crisp zinc sheen meets industrial rigor—these hex cap screws bring a tailored, utilitarian elegance to built-ins and exposed hardware moments. The washer-faced head sits neatly, creating a refined junction that feels intentional, not improvised. Style them with matte-black brackets or raw oak for a modern, mixed-material narrative. An essential, high-strength staple for projects where performance and polish must coexist.
Secure your projects with Grade 5 strength—add this 100-pack of Hillman zinc hex cap screws to your cart today.
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.
