304 Stainless Steel Thin Jam Nuts M6–M16 Fine Thread DIN439

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JARBLUE 304 A2 Stainless Steel Thin Jam Nuts — DIN439 Fine Thread

Keep assemblies secure and precisely locked with these high-quality 304 (A2-70) stainless steel thin jam nuts. Engineered to the DIN439 standard, these flat hexagon nuts are ideal for fine-pitch applications where space is limited and a reliable locking solution is essential. Available in a range of metric sizes and pitches, they're a versatile addition to any toolbox or workshop.

Made in Mainland China.

Key Features

Material: 304 (A2-70) Stainless Steel — corrosion-resistant, durable, and long-lasting
Standard: DIN439 — flat hexagon thin jam nut profile
Size Range: M6, M8, M10, M12, M14, M16
Thread Pitch Options:
- M6: 0.75mm
- M8: 0.75mm or 1mm
- M10: 1mm or 1.25mm
- M12: 1mm, 1.25mm, or 1.5mm
- M14: 1mm or 1.5mm
- M16: 1mm or 1.5mm
Pack Size: 5 or 10 pieces per order
Low-profile hex design fits tight spaces with ease
Fine thread pitch for precise adjustment and superior holding strength
Suitable for woodworking, mechanical assemblies, automotive, and DIY projects

Specifications

Brand	JARBLUE
Material	304 Stainless Steel (A2-70)
Standard	DIN439
Type	Thin Jam Nut / Flat Hexagon Nut
Thread Sizes	M6, M8, M10, M12, M14, M16
Thread Pitch	0.75 / 1 / 1.25 / 1.5 mm (varies by size)
Quantity	5 or 10 pieces
Origin	Mainland China

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Frequently Asked Questions

Q: What is a thin jam nut and when should I use one?

A: A thin jam nut (also called a half nut or flat nut) is a low-profile hex nut used to lock a standard nut in place or to secure assemblies where reduced height clearance is required. These DIN439 thin jam nuts are ideal for fine-thread applications in mechanical, automotive, and woodworking projects where space is tight and a secure locking method is needed.

Q: What is the difference between fine thread and standard (coarse) thread nuts?

A: Fine thread nuts have a smaller pitch (fewer millimetres per thread turn) compared to coarse thread nuts. This means they offer greater clamping strength per rotation, reduced risk of loosening under vibration, and more precise axial adjustment — making them the preferred choice for precision machinery, thin materials, and applications requiring accurate positioning.

Q: Are these nuts rust-resistant for outdoor or humid environments?

A: Yes. These jam nuts are made from 304 (A2-70) stainless steel, which offers excellent corrosion resistance in most environments including damp conditions, moderate weather exposure, and chemical contact. They are a reliable choice for both indoor and outdoor use where rust prevention is important.

Q: Can I order a specific size and pitch combination?

A: Absolutely. Each listing allows you to select your preferred thread diameter (M6 through M16) and the corresponding available pitch. Simply choose your required size and pitch combination from the product options before adding to your cart.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.

We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.