Hillman
Hillman 3/8 in. Diameter x 4-1/2 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screw, 50-Pack
Hillman 3/8 in. Diameter x 4-1/2 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screw, 50-Pack
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Hillman Grade 8 Hex Head Cap Screws, 3/8" x 4-1/2", 50-Pack
Heavy-duty hex head cap screws made from heat-treated Grade 8 steel for high-strength fastening. Partially threaded with a washer face under the head, these 3/8 in. x 4-1/2 in. bolts deliver reliable clamping force in automotive, machinery, and structural applications.
Key Features:
- High Strength Grade 8: Heat-treated steel offers superior tensile strength for demanding applications
- Reliable Seal: Washer face under the head improves load distribution and seating
- Partially Threaded Shank: Enhances shear strength where unthreaded grip is needed
- Coarse Thread: Promotes quick starts and strong holding power in tapped holes or with nuts
- Bulk Value Pack: 50-count boxed pack for shop, jobsite, or maintenance stock
Specifications Table:
| Specification | Details |
|---|---|
| Diameter | 3/8 inch |
| Length | 4-1/2 inch |
| Material | Steel |
| Grade | Grade 8 |
| Finish | Heat-treated (yellow dichromate style) |
| Head Type | Hex head with washer face |
| Thread Type | Coarse |
| Threading | Partially threaded shank |
| Package Quantity | 50 pack |
| Packaging | Boxed |
| Intended Use | Use with a nut or in a tapped hole; tighten with a wrench or drill |
| Package Dimensions (L x W x H) | 5.3 in x 4.3 in x 3.2 in |
| Package Weight | 7.9 lbs |
Frequently Asked Questions (FAQ):
Q: Are these bolts fully or partially threaded?
A: They are partially threaded along the shank for improved shear strength.
Q: What finish do these have?
A: They are heat-treated; listings note a yellow dichromate-style finish associated with Grade 8 hardware.
Q: What thread type is used?
A: Coarse thread suitable for use with matching Grade 8 nuts and washers.
Q: How are they installed?
A: Tighten with a wrench or compatible driver on the hex head; use with a nut or in a properly tapped hole.
Q: Is this a bulk package?
A: Yes, the box contains 50 bolts.
Industrial Strength, Clean Geometry
This hex cap screw brings a crisp, architectural rigor to the details that hold a space together. The faceted head with its washer face offers a tidy, intentional finish, even in exposed applications. Style it with blackened steel brackets or oak joinery to celebrate honest hardware. It’s the quiet, robust essential that underpins a polished, luxury build.
Equip your project with Grade 8 strength—add this 50-pack of Hillman hex cap screws to your cart today.
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