High-Performance Semi-Tubular Rivets for Industrial & OEM Applications
Valley Fastener Group is a leading semi-tubular rivet manufacturer in the United States. We design, manufacture, finish, and supply semi-tubular and tubular rivets for OEMs across a wide range of industries. Our rivets are engineered for strength, cost-efficiency, and high-speed assembly, making them ideal for industrial fastening applications.
Semi-Tubular Rivets vs. Tubular Rivets
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Semi-Tubular Rivet (Hollow Rivet): Manufactured head with a tubular shank depth less than 112% of the shank diameter.
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Tubular Rivet: Tubular shank depth equal to or greater than 112% of the shank diameter.
Semi-Tubular & Tubular Rivet Applications
Semi-tubular and tubular rivets are widely used for joining workpieces quickly and cost-effectively. They can be used for:
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Tight or hinged assemblies
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Multi-material fastening (steel, plastics, rubber, fabric, leather, etc.)
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Automated production lines using impact or orbital rivet machines
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Aesthetic applications with rivet caps for a clean finish
Installation Methods: Rivets are set by impacting, compressing, or spinning the tubular end with a crimping die. The amount of clinch force applied determines joint tightness and can be easily adjusted.
Customization Options
Semi-Tubular Rivet Head Styles
- Oval
- Truss
- Button
- Flat
- Countersunk
Materials
- Steel
- Stainless Steel
- Aluminum
- Brass
- Copper
Plating & Coating
Selected by end-user, dependent on application
Why Use Semi-Tubular or Tubular Rivets?
- High-speed assembly. Semi-tubular rivets feed automatically in impact rivet machines that cycle in approximately 3/10th of a second. Spin/orbital methods of clinching cycle in approximately 5-8 seconds
- Can be clinched in impact rivet machines or in spin/orbital/radial style rivet machines. Air, hydraulic or mechanical presses and hand clinch tools can also be used
- Clinch force required to fasten is typically less than 40% of solid rivets so a less expensive assembly machine is required
- Permanent fastener with good joint strength
- Ease of joint inspection
- Rivet clinches can be roll-clinched, segmented (star set), spun, flared or press clinched
- Can be used to fasten similar or different materials of multiple work-pieces. Can be applied to tightly fasten joints together or used in hinged assemblies
- Tubular-hole rivets often used to pierce and clinch materials (leather-corrugated-plastic-rubber-fabric) without a pre-drilled or punched work-piece hole
- Rivets can also be used with a rivet cap to improve appearance of clinched end
- Long length rivets can be applied without buckling or bending the rivet shank
- Inexpensive alternative to threaded fasteners
- Virtually no scrap is produced during the manufacturing process
- Easily adapted for automation
Dimension Charts
Standard Oval Head Semi-Tubular Rivet Dimensions
| Shank Diameter | Head Diameter | Head Thickness | Approx Head Radius | Hole Diameter | Hole Depth | Max. Fillet Radius head to shank | ||||
| Max | Min | Max | Min | Max | Min | Ref | Max | Min | Nom | |
| 0.061 | 0.058 | 0.114 | 0.104 | 0.019 | 0.015 | 0.16 | 0.044 | 0.039 | 0.046 | 0.008 |
| 0.089 | 0.085 | 0.152 | 0.142 | 0.026 | 0.02 | 0.22 | 0.068 | 0.062 | 0.064 | 0.012 |
| 0.099 | 0.095 | 0.192 | 0.182 | 0.032 | 0.026 | 0.27 | 0.076 | 0.07 | 0.077 | 0.012 |
| 0.123 | 0.118 | 0.223 | 0.213 | 0.038 | 0.03 | 0.31 | 0.09 | 0.084 | 0.094 | 0.016 |
| 0.146 | 0.141 | 0.239 | 0.229 | 0.045 | 0.035 | 0.27 | 0.107 | 0.1 | 0.126 | 0.02 |
| 0.188 | 0.182 | 0.318 | 0.306 | 0.065 | 0.055 | 0.25 | 0.141 | 0.134 | 0.155 | 0.025 |
| 0.217 | 0.21 | 0.444 | 0.43 | 0.075 | 0.061 | 0.63 | 0.163 | 0.155 | 0.189 | 0.025 |
| 0.252 | 0.244 | 0.507 | 0.493 | 0.085 | 0.071 | 0.72 | 0.184 | 0.176 | 0.219 | 0.03 |
| 0.31 | 0.302 | 0.57 | 0.554 | 0.1 | 0.086 | 0.69 | 0.219 | 0.211 | 0.243 | 0.03 |
Semi-Tubular Rivet Length Increments, Tolerances & Fillet Radius
| Shank Diameter | Length Increment | Minimum Length | Length Tolerances Expressed as plus/minus | ||
| Up to and including 4 Times Shank Diameter | Over 4 Times and up to 8 Times Shank Diameter | Over 8 Times Shank Diameter | |||
| .058-.061 | 1/64 | 1/16 | 0.007 | 0.008 | 0.01 |
| .085-.089 | 1/64 | 1/16 | 0.007 | 0.008 | 0.01 |
| .095-.099 | 1/64 | 5/64 | 0.007 | 0.008 | 0.01 |
| .118-.123 | 1/64 | 3/32 | 0.007 | 0.01 | 0.015 |
| .141-.146 | 1/32 | 1/8 | 0.01 | 0.012 | 0.015 |
| .182-.188 | 1/32 | 5/32 | 0.01 | 0.012 | 0.015 |
| .210-.217 | 1/16 | 3/16 | 0.01 | 0.015 | 0.02 |
| .244-.252 | 1/16 | 7/32 | 0.01 | 0.015 | 0.02 |
| .302-.310 | 1/16 | 1/4 | 0.01 | 0.015 | 0.02 |
Suggested Work Piece Holes & Clinch Allowances
| Body Diameter | Work Hole Diameter Recommended Minimum | Clinch Allowance Max |
| .058-.061 | 0.063 | 0.038 |
| .085-.089 | 0.093 | 0.058 |
| .095-.099 | 0.103 | 0.065 |
| .118-.123 | 0.129 | 0.084 |
| .141-.146 | 0.154 | 0.101 |
| .182-.188 | 0.196 | 0.129 |
| .210-.217 | 0.232 | 0.15 |
| .244-.252 | 0.265 | 0.171 |
| .302-.310 | 0.325 | 0.214 |
View Other Rivets
Solid Rivets
Valley Fastener Group manufactures a complete range of solid rivets in various materials, including stainless steel, copper, aluminum, brass, and steel flat head rivets.
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Custom Rivets
From semi-tubular rivets and self-piercing rivets to shoulder rivets, brake rivets and countersunk rivets, Valley Fastener Group the custom rivets that you need.
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Brake Lining Rivets
Brake lining rivets, or clutch facing rivets, typically have a 150-degree flat countersunk head.
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Collar Rivets
Collar rivets include a cylindrical collar compressed around a tubular, solid, or threaded shaft to create a permanent hold. These two-piece fasteners provide a permanent, vibration-resistant hold.
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Countersunk Rivets
Countersunk rivets typically have a flat head and can have a tubular, semi tubular, or solid shank. These are the ideal solution for a permanent hold and a flush smooth finish when securing materials together.
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Self-Piercing Rivets
Self-piercing rivets are valued for their efficiency, providing a clean finish with no pre-punched holes or drilling required, often increasing mass production speed.
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Shoulder Rivets
A shoulder rivet has a manufactured head on one end, a solid shoulder under the head and a smaller diameter shank that is solid or has a semi-tubular or tubular hole.
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