The Hillman Group 3337 5/16-18 Square Nut Zinc Plated, 30-Pack
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- FOUR-SIDED ANTI-TURN NUT: This square nut has four flat sides that give more wrench contact and a wide, flat seat, so it grips well and resists spinning when it seats against a flat surface or drops into a channel, slot, or wood recess.
- SQUARE SHAPE SEATS FLAT: Fitting a 5/16-18 coarse bolt, the four sides let the nut sit flush against a rail or wedge into a slot so it cannot rotate, letting you tighten the bolt from the other side without holding the nut still.
- ZINC-PLATED STEEL: Made from steel with a protective zinc plating, the square nut resists rust and corrosion for dependable indoor and light outdoor use, holding a firm, flat-seated grip on channel, wood, and machinery over time.
- CHANNEL, STRUT, AND WOOD USE: Ideal for strut and channel framing, wood connections, machinery, sign and fixture mounting, and restoration work where a square nut seats flat or locks in a slot, a classic nut for building and repair.
- TRUSTED HILLMAN QUALITY: Hillman supplies dependable fasteners and hardware that homeowners and pros rely on for everyday projects. Keep these nuts on hand for assembly, mounting, and repair jobs around the home and shop.
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Select a product to estimate shipping.Hillman Square Nuts use four flat sides instead of six to give more wrench contact and a wide, flat bearing seat. Fitting a 5/16-18 coarse bolt, the square shape lets the nut sit flush against a flat surface or drop into a channel, slot, or wood recess where it grips and resists spinning, which is why square nuts are the classic choice for strut framing and older machinery. The anti-rotation is the point: when the nut seats against a rail or wedges into a slot, it cannot turn, so a bolt can be driven and tightened from the other side without holding the nut still with a second wrench. That makes square nuts fast to work with in channel, strut, and blind connections. Made from steel with a protective zinc plating, the square nut resists rust and corrosion for dependable indoor and light outdoor use. The plating keeps the threads clean and the flat seat secure over time, so a channel, sign, or machinery connection stays tight through handling and service. Use these square nuts for strut and channel framing, wood connections, machinery, sign and fixture mounting, and restoration work where a square nut seats flat or locks in a slot. They pair with a matching bolt and drop neatly into strut channel or a broached slot. This 30-piece pack provides a ready supply for building, mounting, and repair projects around the home, shop, and job site.
A Square Nut is a four-sided nut that can be used in a channel or welded into place. Square nuts have a greater surface in contact with the part being fastened, and therefore provide greater resistance to loosening, but also a greater resistance to tightening as well. Square nuts are used along with flat washers in order to avoid damage from their sharp edges and help to increase the strength of the fastener.
Hillman Solutions is a leading North American provider of hardware products, including home improvement products, protective and job site gear solutions including gloves and storage, and robotic technologies encompassing key duplication and accessories, engraving and knife sharpening. Hillman designs innovative products and merchandising solutions for complex categories. Founded in 1964 in Cincinnati, Ohio, Hillman believes that the building never stops.
| Main Specification | |
|---|---|
| Manufacturer | The Hillman Group |
| Unit Count | 30 Count |
| Exterior Finish | Zinc |
| Metal Type | Alloy Steel |
| Thread Coverage | Fully Threaded |
| Outside Diameter | 0.31 inches |
| Brand | Hillman |
| UPC | 008236028423 |
| Number of Items | 30 |
| Fastener Type | Square |
| Item Diameter | 0.31 Inches |
| Number of Pieces | 30 |
| Thread Size | 5/16"-18 |
| Material | Alloy Steel |
| Colour | Silver |
| Thread Type | Unified National |
| Global Trade Identification Number | 00008236028423 |
| Item Weight | 0.27 g |
| Product information | |
| Number of Packs | 1 |
| Set Name | Square Nut Set |
| Technical Details | |
| Thread Style | Right Hand or Unified National |
| Part Number | 3337 |
| Model | 3337 |
| Inside Thread Size | 5/16" |
| Material Type | Alloy Steel |
| Thread Class | Coarse |
| Compatible groove diameter | 0.31 Inches |
| Style | |
| Finish Types | Zinc Plated |
| Measurements | |
| Item Dimensions | 1.5 x 1.7 x 2.5 inches |
| Others | |
| Item Highlight | Wood or Machinery or Rust-Resistant or fixtures or Four flat sides seat and grip or resists spinning in a slot or strut or channel or signs |
| Product Type | Square Nuts |
| Grade Rating | Commercial |
| Size Name | 5/16"-18 |
| Screw Head Style | Square |
| Drive Style | Square |