Not every fastening application has enough space for a standard hex nut. DIN 439 B Hexagon Thin Nuts are designed for compact assemblies where a low-profile fastening solution is required without compromising thread engagement. Their reduced height makes them suitable for applications where installation space is limited or where an additional locking nut is used to improve fastening stability.
These thin hex nuts are widely used as jam nuts in double-nut assemblies to help keep bolted joints firmly in position. Installed alongside a standard nut, they help improve fastening stability in applications exposed to movement or regular adjustments. Their compact design also makes them suitable for machinery, equipment, instrumentation, automation systems, and fabricated assemblies where installation space is limited.
At Vimal Industrial Corporation, we supply DIN 439 B Hexagon Thin Nuts in stainless steel for industrial applications that demand dimensional accuracy, corrosion resistance, and dependable performance. Available in multiple metric sizes, our hexagon thin nuts support OEM manufacturing, engineering projects, maintenance requirements, and industrial fabrication with fastening solutions that match application-specific needs.
DIN 439 B Hexagon Thin Nuts are used in fastening applications where a standard hex nut cannot be accommodated due to limited installation space. Their reduced thickness makes them suitable for compact assemblies and double-nut arrangements, where they help maintain fastening stability without increasing the overall height of the joint.
Used across machinery, automation equipment, industrial fabrication, and engineering applications, these thin nuts provide accurate thread engagement while supporting space-efficient designs. Their compact profile also makes them a practical choice for maintenance and equipment assemblies where installation clearance is restricted.
As an authorized APL Fasteners dealer, Vimal Industrial Corporation supplies DIN 439 B Hexagon Thin Nuts in stainless steel across multiple metric sizes to suit diverse industrial requirements. We support OEMs, fabricators, contractors, and industrial buyers with application-based product selection, dependable availability, and efficient order fulfilment.
DIN 439 B Hexagon Thin Nuts help create compact bolted joints without increasing the overall assembly height. Their thin profile also allows them to work as jam nuts wherever additional locking support is required.
Common Applications Include:
Machinery & Equipment – Provides a compact fastening solution for threaded assemblies with limited installation clearance.
Hydraulic & Pneumatic Systems – Helps secure valves, manifolds, and fittings while keeping the overall assembly compact.
Automation Equipment – Supports precision assemblies where every millimetre of installation space matters.
Electrical Panels – Keeps threaded terminals and mounting studs securely fastened inside compact enclosures.
Fabrication & Engineering – Offers an effective locking solution for custom assemblies requiring a low-profile nut.
Selecting the right supplier for DIN 439 B Hexagon Thin Nuts goes beyond product availability. Industrial buyers need consistent specifications, dependable stock, and timely support to keep projects and production running without unnecessary delays. That’s exactly what Vimal Industrial Corporation focuses on.
Why clients across India choose us:
✅ Authorized APL Fasteners Dealer – We supply genuine APL Fasteners backed by accurate specifications, helping customers procure products they can rely on for industrial applications.
✅ Wide Range of Sizes – DIN 439 B Hexagon Thin Nuts are available in multiple metric sizes, making it easier to source the right fastening solution for different assembly requirements.
✅ Stainless Steel Fastening Solutions – Our stainless steel variants are suitable for applications where corrosion resistance, durability, and long service life are essential.
✅ Support for Bulk & Project Requirements – Whether the requirement is for scheduled production, plant maintenance, or a large engineering project, we help manage procurement with consistent product availability.
✅ Responsive Order Handling – From quotation to dispatch, our team focuses on quick communication and smooth order coordination to help reduce procurement delays.
✅ Application-Based Assistance – We work closely with customers to help identify suitable specifications based on installation requirements and fastening applications.
✅ Documentation Support – Product-related documentation and material details can be provided whenever required for quality verification and procurement processes.
Choosing Vimal Industrial Corporation means working with a supplier that understands industrial procurement as well as fastening requirements. Our focus is on supplying DIN 439 B Hexagon Thin Nuts with accurate specifications, dependable availability, and the support businesses need to keep their operations moving efficiently.
| Thread size d | M1,6 | (M1,8) | M2 | M2,5 | M3 | (M3,5) | M4 | M5 | M6 |
|---|---|---|---|---|---|---|---|---|---|
| P | 0,35 | 0,35 | 0,4 | 0,45 | 0,45 | 0,6 | 0,7 | 0,8 | 1 |
| da min. | 1,6 | 1,8 | 2 | 2,5 | 3 | 3,5 | 4 | 5 | 6 |
| da max. | 1,84 | 2,06 | 2,3 | 2,9 | 3,45 | 4 | 4,6 | 5,75 | 6,75 |
| dw min. | 2,4 | 2,7 | 3,1 | 4,1 | 4,6 | 5,1 | 5,9 | 6,9 | 8,9 |
| e min. | 3,48 | 3,82 | 4,32 | 5,45 | 6,01 | 6,58 | 7,66 | 9,79 | 11,05 |
| m max. | 1 | 1,1 | 1,2 | 1,6 | 1,8 | 2 | 2,2 | 2,7 | 3,2 |
| m min. | 0,75 | 0,85 | 0,95 | 1,35 | 1,55 | 1,75 | 1,95 | 2,45 | 2,9 |
| m´ min. | 0,6 | 0,68 | 0,76 | 1,06 | 1,24 | 1,4 | 1,56 | 1,96 | 2,32 |
| s max. | 3,2 | 3,5 | 4 | 5 | 5,5 | 6 | 7 | 8 | 10 |
| s min. | 3,08 | 3,38 | 3,82 | 4,82 | 5,32 | 5,82 | 6,78 | 7,78 | 9,78 |
| Thread size d | M8 | M10 | M12 | (M14) | M16 | (M18) | M20 | (M22) | M24 |
|---|---|---|---|---|---|---|---|---|---|
| M8×1 | M10×1 | M12×1,25 | (M14×1,5) | M16×1,5 | (M18×1,5) | M20×2 | (M22×1,5) | M24×2 | |
| – | M10×1,25 | M12×1,25 | – | – | (M18×2) | M20×1,5 | (M22×2) | (M24×1,5) | |
| P | 1,25 | 1,5 | 1,75 | 2 | 2 | 2,5 | 2,5 | 2,5 | 3 |
| da min. | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 |
| da max. | 8,75 | 10,8 | 13 | 15,1 | 17,3 | 19,5 | 21,6 | 23,8 | 25,9 |
| dw min. | 11,6 | 15,6 | 17,4 | 20,5 | 22,5 | 24,9 | 27,7 | 29,5 | 33,2 |
| e min. | 14,38 | 18,9 | 21,1 | 24,49 | 26,75 | 29,56 | 32,95 | 35,03 | 39,55 |
| m max. | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| m min. | 3,7 | 4,7 | 5,7 | 6,42 | 7,42 | 8,42 | 9,1 | 9,9 | 10,9 |
| m´ min. | 2,96 | 3,76 | 4,56 | 5,14 | 5,94 | 6,74 | 7,28 | 7,92 | 8,72 |
| s max. | 13 | 17 | 19 | 22 | 24 | 27 | 30 | 32 | 36 |
| s min. | 12,73 | 16,73 | 18,67 | 21,67 | 23,67 | 26,16 | 29,16 | 31 | 35 |
| Thread size d | (M27) | M30 | (M33) | M36 | (M39) | M42 | (M45) | M48 | (M52) |
|---|---|---|---|---|---|---|---|---|---|
| (M27×2) | M30×2 | (M33×2) | M36×3 | (M39×3) | M42×3 | (M45×3) | M48×3 | (M52×3) | |
| – | – | – | M36×2 | (M39×2) | M42×2 | (M45×2) | M48×2 | (M52×2) | |
| (M27×1,5) | M30×1,5 | – | M36×1,5 | (M39×1,5) | M42×1,5 | (M45×1,5) | M48×1,5 | (M52×1,5) | |
| P | 3 | 3,5 | 3,5 | 4 | 4 | 4,5 | 4,5 | 5 | 5 |
| da min. | 27 | 30 | 33 | 36 | 39 | 42 | 45 | 48 | 52 |
| da max. | 29,2 | 32,4 | 35,6 | 38,9 | 42,1 | 45,4 | 48,6 | 51,8 | 56,2 |
| dw min. | 38 | 42,7 | 46,6 | 51,1 | 55,9 | 60 | 64,7 | 69,4 | 74,2 |
| e min. | 45,2 | 50,85 | 55,37 | 60,79 | 66,44 | 71,3 | 76,95 | 82,6 | 88,25 |
| m max. | 13,5 | 15 | 16,5 | 18 | 19,5 | 21 | 22,5 | 24 | 26 |
| m min. | 12,4 | 13,9 | 15,4 | 16,9 | 18,2 | 19,7 | 21,2 | 22,7 | 24,7 |
| m´ min. | 9,9 | 11,1 | 12,3 | 13,5 | 14,6 | 15,8 | 17 | 18,2 | 19,8 |
| s max. | 41 | 46 | 50 | 55 | 60 | 65 | 70 | 75 | 80 |
| s min. | 40 | 45 | 49 | 53,8 | 58,8 | 63,1 | 68,1 | 73,1 | 78,1 |
Note: All the information provided on this website is provided on an “as is” and “as commonly used in production” basis and you agree that you use such information entirely at your own risk. This website gives no warranty and accepts no responsibility or liability for the accuracy or the completeness of the information and materials contained in this website. Under no circumstances will the website be held responsible or liable in any way for any claims, damages, losses, expenses, costs or liabilities whatsoever (including, without limitation, any direct or indirect damages for loss of profits, business interruption or loss of information) resulting or arising directly or indirectly from your use of or inability to use this website.
A DIN 439 B is essentially a low-profile hex nut used when vertical space is limited. It is often used as a “Jam Nut,” where it is tightened against a standard nut to lock the bolt fastener in place and prevent it from loosening due to vibration.
They are called Jam Nuts because they “jam” against another nut to create friction. In many industrial setups in India, engineers use this double-nutting technique to ensure the assembly stays secure without using chemical thread-lockers.
You can find them in carbon steel, galvanized steel, and Stainless Steel Fasteners (A2/A4). For projects in Mumbai, SS 316 is the preferred choice to ensure the thin profile doesn’t weaken over time due to salt-water corrosion.
Yes, the “B” version (DIN 439 B) has chamfered edges (rounded corners) on both sides, making it easier to install and more aesthetic. This is the standard version of most Nut Bolt Supplier stocks in Mumbai for general engineering use.
Precision is key with thin nuts. If the threads aren’t cut perfectly, the nut can strip easily under pressure. A trusted Fasteners Supplier India like Vimal Industrial ensures that even the thinnest nuts meet international DIN standards for thread accuracy.
