Spring Nut
Spring Nuts by Asia Bolts Industries are precision-stamped, self-retaining fastening elements manufactured from hardened spring steel, designed to provide fast, tool-free, or single-sided fastening in sheet metal assemblies, panel fabrication, automotive bodywork, electrical enclosures, and HVAC ducting applications. Also known as Speed Nuts, Clip Nuts, U-Nuts, J-Nuts, Push-On Nuts, and Sheet Metal Nuts, spring nuts eliminate the need for welded fasteners or access to the reverse side of a panel — dramatically reducing assembly time and cost in high-volume production and site installation environments.
Manufactured from hardened carbon spring steel, stainless steel, and phosphor bronze to DIN 6798, DIN 7967 (Sperrkantmutter), ASME B18.21.1, and proprietary stamping specifications, our spring nuts are produced at our Dubai Investment Park facility under ISO 9001, ISO 45001, and ISO 14001 certified quality systems and supplied to industries across the GCC, Middle East, Africa, and 70+ countries worldwide.
✅ Speed nuts, clip nuts, U-nuts, J-nuts & push-on nut types available
✅ Carbon spring steel, stainless steel & phosphor bronze grades
✅ Standard & custom stamping configurations on request
✅ Full MTC documentation & batch traceability provided
✅ ISO 9001 · ISO 45001 · ISO 14001 certified
✅ Approved vendor: Saudi Aramco | ADNOC | SABIC
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Spring Nuts – Speed Nut & Clip Nut Manufacturer & Supplier in UAE
Asia Bolts Industries LLC is a specialist Spring Nut manufacturer and supplier based in Dubai, UAE, delivering precision-stamped spring fastening solutions to the automotive, electrical, HVAC, construction, oil & gas, and marine sectors across the GCC and global markets since 1997. Our spring nuts are engineered for fast, reliable, and vibration-resistant fastening in applications where conventional hex nuts cannot be used — particularly in thin sheet metal assemblies, blind access panels, and high-speed production line installations.
What Are Spring Nuts?
Spring Nuts are single-piece, spring-action fastening elements stamped from hardened strip steel. They grip onto a panel edge, slot, or bolt thread by spring tension alone — requiring no tools, no welding, and no rear access for installation. Once engaged, the spring force of the nut resists vibration-induced loosening, making them a preferred fastening solution in dynamic, high-cycle applications.
They are commonly known by several names depending on configuration and industry:
- Speed Nuts — U-shaped clip that snaps over a panel edge with an integral threaded hole
- Clip Nuts / U-Nuts — clips onto a panel flange, accepts a bolt from the front face only
- J-Nuts — J-shaped spring clip for T-slots and extruded profiles
- Push-On Nuts — pushes directly onto a plain stud or bolt thread without rotation
- Spire / Palnut — multi-finger push-on nut for light-duty retention
- Sheet Metal Nuts — general term for stamped spring nuts used in panel assemblies
Spring Nuts are widely used in:
- Electrical enclosures and control panels — cable management, busbar supports, DIN rail mounting
- HVAC and air handling units — ductwork assembly, filter frames, access panels
- Automotive bodywork and trim — interior panels, door linings, under-bonnet assemblies
- Telecommunications and data centre equipment — rack mounting, server enclosures, cable trays
- Marine and offshore equipment panels — junction boxes, instrument housings, switchgear
- Construction and modular buildings — cladding systems, suspended ceilings, partition walls
- Oil & gas instrument enclosures — field junction boxes, analyser shelters, control buildings
Types of Spring Nuts Available
1. U-Nut (Clip Nut) — DIN 7967 variant
A U-shaped spring clip with an integral threaded tab. Clips onto a panel flange of defined thickness range. The bolt is inserted from the front face, engaging the threaded tab on the spring arm. Widely used in electrical enclosure assembly and automotive panel fastening.
2. Speed Nut (Tinnerman Nut)
A flat stamped spring nut with a pierced thread form. Snaps over a panel edge or into a slot. Accepts self-tapping or machine screws. Standard for high-volume sheet metal assembly in HVAC, automotive, and appliance manufacturing.
3. J-Nut
A J-shaped clip that hooks into a rectangular slot or T-profile channel. The bolt engages a threaded tab on the spring arm. Used extensively in automotive body assembly and modular structural profiles.
4. Push-On Nut (Spire Nut / Palnut)
A multi-finger stamped nut that pushes axially onto a plain or threaded stud, gripping by spring finger contact. Used for light retention, cable management clips, and trim fastening where removal is not anticipated.
5. Flat Push-On Nut
A flat washer-form nut with a central pierced thread that pushes onto a stud. Provides a wider bearing surface than a spire nut. Common in appliance and electrical panel assembly.
6. Extended Spring Nut (Long Clip Nut)
An extended U-nut body accommodating wider panel flange widths or providing a larger spring retention force. Used in heavy-gauge panel assemblies and industrial enclosures.
Standards & Specifications
| Standard | Description |
|---|---|
| DIN 7967 | Sperrkantmutter — prevailing torque spring steel nuts |
| DIN 6798 | Serrated lock washers (associated locking standard) |
| ASME B18.21.1 | Lock washers and spring fasteners — inch series |
| ISO 7042 | Prevailing torque all-metal hexagon nuts |
| BS 4464 | Spring washers and nuts for general engineering |
| Proprietary | Customer drawing / OEM specifications accepted |
Custom stamping tooling for non-standard panel thicknesses, slot widths, thread sizes, and spring rates is available through our engineering team.
Materials & Grades Available
| Material | Grade / Specification | Typical Use |
|---|---|---|
| Carbon Spring Steel | 65Mn, C75, hardened & tempered | General industrial, HVAC, construction |
| Stainless Steel | AISI 301, 304, 316 | Corrosive environments, marine, offshore |
| Phosphor Bronze | CuSn6, CuSn8 | Electrical, EMI-sensitive, marine |
| Beryllium Copper | C17200 | High-conductivity electrical assemblies |
| Galvanised Steel | HDG / zinc electroplated | Outdoor, construction, infrastructure |
Surface treatment options include zinc electroplating, nickel plating, tin plating, black oxide, passivation (stainless), and phosphate & oil.
Dimensions & Size Range
| Parameter | Range |
|---|---|
| Thread Size | M3 to M24 (metric) | No. 6 to 5/8″ (imperial) |
| Panel Thickness Range | 0.5 mm to 6.0 mm (clip nut engagement range) |
| Material Thickness | 0.4 mm to 2.5 mm spring strip |
| Finish | Plain, zinc plated, nickel, tin, black oxide |
| Thread Form | Metric coarse / UNC / UNF / self-tapping |
| Tolerance | Per DIN 7967 / customer drawing |
Non-standard panel thickness ranges, custom clip body dimensions, and bespoke thread engagements are manufactured on request.
- 🏗️ High-rise Buildings & Commercial Construction
- 🌉 Bridges, Flyovers & Infrastructure
- ⚡ Power Plants & Substations
- 🛢️ Oil & Gas — Onshore & Offshore Platforms
- 🏭 Petrochemical & Industrial Facilities
- 📡 Transmission Towers & Telecom Structures
- 💧 Water Treatment Plants & Desalination
- 🚉 Rail & Metro Infrastructure
Packaging Information
📦 Standard: Cartons, wooden boxes or pallets based on quantity and customer requirements
🎁 Custom: Polybag + carton on request
🚢 Export: Fumigated pallets available
📋 Each box includes inspection certificate
Delivery Information
📦 Lead Time: Stock items: 1-5 days | Custom manufacturing: 7-30 days
🚢 Shipping Methods: Air freight, sea freight, or land transportation. FOB, CIF, DDP terms available.
📋 Full export documentation provided with every shipment: Commercial Invoice, Packing List, MTC, Bill of Lading, and Certificate of Origin
☑ Saudi Aramco Approved: Recognized vendor for critical upstream and downstream projects.
🔩 Custom Manufacturing: We produce non-standard lengths and diameters based on your drawings.
🏅 Triple ISO + CE Certified: ISO 9001 Quality, ISO 45001 Safety, and ISO 14001 Environmental certification, plus CE marking for European market compliance.
🏭 32,260 sqm Facility: The largest fastener manufacturing complex in the Middle East, equipped with advanced CNC machinery and full in-house production capability.
🔬 In-House Testing Lab: Full material traceability from raw stock to finished product. Tensile, hardness, dimensional, and spectroscopic testing all performed on-site.
🚚 Global Delivery: Shipped to 70+ countries via established logistics networks. Flexible packaging, documentation and third-party inspection support available.
