4-40 · 5-18 · 6-7 · 9-16 Rivnut Rivet Nut for Metal | OEM
Precision 4-40 · 5/16-18 · 6-32 · 7/16 · 9/16 Rivnut & Rivet Nut for Metal | OEM – Factory-Direct Strength
Engineered for thin-section metal assemblies — eliminate loose nuts, reduce weight, and speed up production. ISO 9001 · RoHS · CE certified with 30+ countries export experience.
Why Standard Fasteners Fail in Thin Metal & High-Vibration Assemblies
Every year, manufacturers lose up to 23% of production efficiency due to fastener failures — loose nuts, stripped threads, and rework. Here are the 5 core pains we solve:
- 🔴 High assembly cost — traditional nuts + lock washers increase part count and labor time by 37%.
- 🔴 Blind-side access impossible — 60% of metal enclosures have no rear access, making standard bolting unusable.
- 🔴 Vibration loosening — in automotive & industrial machinery, up to 18% of fasteners back out within 6 months.
- 🔴 Oversized inventory — managing 20+ different nut & washer SKUs increases carrying cost by 15% annually.
- 🔴 Galvanic corrosion & thread galling — mismatched materials cause field failures and warranty claims.
Handan Boen Fastener — 10+ years of precision manufacturing, 30+ countries trust our quality.
One-Piece Blind Rivet Nut — Replace 3 Parts with 1
The 4-40 · 5/16-18 · 6-32 · 7/16 · 9/16 rivnut series installs from one side, creating a strong, reusable thread in thin metal, plastic, or composite panels.
Blind-Side Installation
No rear access needed. Installs in 2 seconds with a hand tool or pneumatic riveter. Reduces labor by up to 40%.
Vibration-Proof Grip
Multi-lobe knurling and undercut design prevent rotation. Tested to ISO 16130 vibration standards.
Full Size Range — 4-40 to 9/16
From 4-40 rivet nut for electronics to 9/16 rivet nut for heavy equipment. Unified thread, metric, and custom OEM specs.
Material Versatility
Steel, stainless steel, aluminum, brass. With RoHS, CE, ISO 9001 certifications. Suitable for automotive, HVAC, solar, and aerospace.
OEM/ODM Customization
Custom head markings, shank length, flange diameter, and packaging. Low MOQ for prototyping, high-speed for volume.
Fast Global Logistics
DDP & FOB options. Inventory in 3 continents. Typical lead time 7–15 days for standard sizes.
📊 Technical Specifications — Rivnut & Rivet Nut for Metal
| Thread Size | Grip Range (mm) | Head Diameter (mm) | Min. Hole Size (mm) | Shear Load (kN) | Material Options |
|---|---|---|---|---|---|
| 4-40 rivet nut (UNC #4-40) | 0.5 – 2.0 | 6.0 | 4.2 | 1.2 | Steel, SS, Alu |
| 6-32 rivet nut (UNC #6-32) | 0.5 – 2.5 | 7.0 | 5.0 | 1.8 | Steel, SS, Brass |
| 6-32 blind nut (thin sheet) | 0.5 – 2.0 | 7.5 | 5.0 | 1.6 | SS, Alu |
| 5/16-18 rivet nut (UNC 5/16-18) | 1.0 – 4.0 | 12.0 | 8.5 | 5.5 | Steel, SS, Zinc |
| 5/16-18 rivnut (heavy duty) | 1.5 – 5.0 | 13.5 | 9.0 | 6.2 | Steel, SS |
| 5/16 blind nut (closed end) | 1.0 – 3.5 | 12.5 | 8.5 | 5.0 | SS, Alu |
| 5/16 nutsert (high clamp) | 1.0 – 4.0 | 13.0 | 8.8 | 5.8 | Steel, SS |
| 7/16 rivet nut (UNC 7/16-14) | 1.5 – 5.0 | 16.0 | 11.0 | 9.0 | Steel, SS |
| 7/16 nutsert (extra grip) | 2.0 – 6.0 | 17.0 | 11.5 | 10.2 | SS, Carbon steel |
| 9/16 rivet nut (UNC 9/16-12) | 2.0 – 6.0 | 20.0 | 14.0 | 14.5 | Steel, SS |
📌 Custom grip ranges, head styles (flat, countersunk, large flange), and materials available for OEM projects. Contact us for a free sample kit.
🏭 Real-World Application Scenarios
❓ Frequently Asked Questions
🔹 What is the difference between a rivet nut and a nutsert?
They are functionally the same — a blind threaded insert. The term rivnut is a brand name, while nutsert is commonly used in automotive. Boen supplies all variants: 5/16 nutsert, 6-32 nutsert, 7/16 nutsert, and 5/16 blind nut.
🔹 Can I use a 5/16-18 rivet nut in stainless steel?
Yes. We offer 5/16-18 rivnut in 304 and 316 stainless steel. Ideal for marine, food processing, and chemical environments. RoHS and REACH compliant.
🔹 What is the minimum order quantity (MOQ) for 4-40 rivet nut?
For standard steel 4-40 rivet nut, MOQ is 1,000 pcs. For stainless steel or brass, MOQ starts at 500 pcs. OEM custom sizes may have different MOQ — contact us for a quote.
🔹 How do I install a 6-32 blind nut in thin aluminum?
Use a manual or pneumatic rivet nut tool. Drill a 5.0 mm hole, insert the 6-32 blind nut, and actuate the tool. The nut collapses and forms a tight, permanent thread. We provide installation videos and tool recommendations.
🔹 Do you offer 5/16 blind nut with a closed end?
Yes. Closed-end 5/16 blind nut (also called sealed rivnut) prevents liquid ingress. Perfect for battery enclosures, outdoor HVAC, and solar junction boxes.
🔹 What is the lead time for 7/16 rivet nut and 9/16 rivet nut?
Standard sizes: 7–12 days for production, plus shipping. For 7/16 nutsert and 9/16 rivet nut in bulk, we can expedite to 5 days for confirmed orders.
🔹 Do you provide free samples for 6-32 rivet nut or 5/16-18 rivet nut?
Absolutely. We offer free samples (up to 10 pcs per size) for qualified OEM and distributor inquiries. Just pay shipping, or we can include them with your next order.
🔹 How do you ensure quality for rivet nut 5/16 and rivet nut 6-32?
Every batch is tested for pull-out strength, torque, and hardness. We are ISO 9001:2015 certified. Material certifications and dimensional reports are provided with every shipment.
⭐ What Our Customers Say
"We use 5/16-18 rivet nut for our trailer hitch assemblies. The thread consistency is excellent — no rework. Boen's pricing is 20% lower than our previous supplier."
"The 6-32 nutsert and 4-40 rivet nut we ordered for our PCB enclosure line arrived in 6 days. Great communication from the sales team."
"We switched to Boen for 7/16 rivet nut and 9/16 rivet nut for our heavy-duty racking. The zinc-plated finish passed 72h salt spray test. Excellent value."
Chen Wei — Senior Fastener Engineer & Export Specialist
With 12+ years in industrial fasteners at Handan Boen, Chen has overseen 200+ OEM projects for automotive, solar, and construction clients across Europe and the Americas. He holds a degree in Mechanical Engineering and is a member of the Industrial Fasteners Institute (IFI).
🚀 Ready to Solve Your Fastener Challenges?
Get a free sample kit + OEM quote within 24 hours. No minimum commitment for first-time buyers.
📧 shuan@fastenboen.com | mary@fastenboen.com | grace@fastenboen.com | stella@fastenboen.com
Hanguang Industrial Park, Yongnian District, Handan City, Hebei Province, China · Mon–Fri 09:00–17:00
Trusted by Engineers & Procurement Teams in 30+ Countries
"We switched from imported rivnuts to Boen's 5/16-18 rivnut and cut our per-unit cost by 34%. Delivery is consistently on time."
"The 6-32 rivet nut and 4-40 rivet nut samples arrived in 5 days. Quality is consistent — no thread issues. We now use them in all our control cabinets."
"Boen's OEM team customized a 9/16 rivet nut with a longer shank for our solar trackers. The engineering support was outstanding."