Description
Plus Nuts (Pre-Bulbed Rivet Nuts)
Plus Nuts Size Chart & Specifications
Material & Finish Options
Available in Steel, Stainless Steel, Brass, and Aluminum (custom options available).
Steel finishes include CR3 White, Yellow, Black Zinc Plating, Zinc Nickel, and Nickel Plating.
THREAD SIZE(UNC) |
PART NO. |
Grip Range |
Hole Size |
Head Dia. / H |
Head Height / t |
Body Dia. / D |
Length / L |
| UNC 10-32 | TOPSN1032 | 0.020-0.175 | 0.312-0.317 | 0.5 | 0.038 | 0.31 | 0.8 |
| UNC 10-32 | TOPSN1032-L | 0.175-0.320 | 0.312-0.317 | 0.5 | 0.038 | 0.31 | 0.94 |
| UNC 1/4-20 | TOPSN420 | 0.020-0.280 | 0.386-0.391 | 0.625 | 0.058 | 0.384 | 1.03 |
| UNC 1/4-20 | TOPSN420-L | 0.280-0.500 | 0.386-0.391 | 0.625 | 0.058 | 0.384 | 1.26 |
| UNC 5/16-18 | TOPSN518 | 0.020-0.280 | 0.496-0.504 | 0.75 | 0.062 | 0.482 | 1.18 |
| UNC 5/16-18 | TOPSN518-L | 0.280-0.500 | 0.496-0.504 | 0.75 | 0.062 | 0.482 | 1.41 |
THREAD SIZE(Metric) |
PART NO. |
Grip Range |
Hole Size |
Head Dia. / H |
Head Height / t |
Body Dia. / D |
Length / L |
| M6PH1.0 | TOPSN6 | 0.50-7.10 | 9.80-9.93 | 15.9 | 1.5 | 9.76 | 26.2 |
| M6PH1.0 | TOPSN6-L | 7.10-12.70 | 9.80-9.93 | 15.9 | 1.5 | 9.76 | 32 |
| M8PH1.25 | TOPSN8 | 0.50-7.10 | 12.6-12.8 | 19 | 1.57 | 12.25 | 30 |
| M8PH1.25 | TOPSN8-L | 7.10-12.70 | 12.6-12.8 | 19 | 1.57 | 12.25 | 35.8 |
WHAT IS PLUS NUTS?
Plus Nuts (Pre-Bulbed Rivet Nuts) are slotted body rivet nuts that expand into four legs, creating a wide backside footprint for maximum holding strength.
They are ideal for thin sheet metal, soft materials, and oversized holes where standard rivet nuts may fail.
With a large grip range and excellent pull-out resistance, plus nuts are widely used in automotive, truck & trailer repair, and industrial applications.
Metric Sizes:
-
Plus Nut M6 x 1.0
-
Plus Nut M8 x 1.25
Inch Sizes:
-
Plus Nut 10-32
-
Plus Nut 1/4-20
-
Plus Nut 5/16-18
Key Features
- Expands into four legs for maximum backside support
- Large grip range for thin or soft materials
- Suitable for oversized or irregular holes
- High pull-out resistance
- Ideal for sheet metal and structural applications
📩 Request a quote for your application sales@imperialrivet.com
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