What thread standard do these M2 screws use?

These screws use the ISO metric coarse thread standard: M2×0.4 (2mm diameter, 0.4mm pitch). They are compatible with standard M2 metric nuts, threaded inserts, brass standoffs, and tapped holes following ISO 68-1 — the standard used in most precision electronics and instrument hardware worldwide.

What is the tensile strength and load rating of M2 wafer head screws?

M2 machine screws are small-diameter fasteners intended for light-duty clamping and panel retention rather than structural load-bearing. Steel variants (zinc or nickel plated) are typically manufactured to property class 4.8 per ISO 898-1, with a minimum tensile strength of approximately 420 MPa. Stainless steel variants are generally A2-70, rated to approximately 700 MPa. Due to the small cross-section of M2 screws, torque values are low — typically 0.1–0.2 N·m — and overtightening should be avoided to prevent thread stripping.

Which pack size should I order, and are these suitable for production use?

Pack sizes are 100, 200, and 500 pieces. For prototyping or small repairs, a 100-pack is sufficient. For small production runs or workshop stocking, 200 pcs offers a practical balance. For high-volume assembly lines or manufacturing, the 500-pack provides the best per-unit value. All packs ship from our US warehouse.

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M2 Thin Wafer Head Machine Screws | Ultra-Low-Profile Flat Head | Zinc / Ni / Stainless | 2–21mm

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Sizes: M2*2 D=6*1.2【Ni-Plated】

Packing QTY (Piece): 100 PCS

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$7.85 USD

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In stock (500 units), ready to be shipped

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M2 Thin Wafer Head Machine Screws — Ultra-Low-Profile Flat Head Fasteners for Electronics, PCBs, and Precision Assemblies

Standard pan head or button head screws are too tall for tight PCB assemblies, laptop chassis, and precision instrument panels — the protruding head collides with adjacent components or prevents the enclosure from closing. Electronics engineers, device repair technicians, and precision assembly manufacturers rely on M2 thin wafer head machine screws to secure panels and boards where vertical clearance is measured in fractions of a millimeter. The extra-wide, ultra-thin head distributes clamping load without a washer while keeping the overall profile as low as possible.

Each set contains M2 wafer head (flat head, low-profile) machine screws with ISO metric coarse thread M2×0.4. Variants specify both the screw length and the head dimensions in the format M2*[length] D=[head diameter]*[head height] — for example, M2*3 D=6×1 means a 3mm long screw with a 6mm diameter head that is 1mm tall. Available in lengths from 2mm (≈5/64") to 21mm (≈13/16"), with head diameters ranging from 2.5mm to 7mm and head heights from 0.4mm to 1.5mm depending on the variant. Finish options include Ni-Plated, Bright Zinc-Plated, Black Zinc-Plated, and Stainless Steel. Sold in packs of 100, 200, or 500 pieces.

Typical applications include PCB mounting and electronics enclosure assembly where M2 low-profile wafer head screws for circuit boards keep assemblies compact, laptop and consumer device repair where ultra-thin head machine screws for tight clearance applications prevent interference with internal components, and precision optical and camera equipment where black zinc-plated wafer head screws reduce light reflection inside the housing while providing secure panel retention.

⚠️ Each variant specifies both screw length and head dimensions (D=diameter×height). Confirm both the length and head diameter match your application before ordering — head sizes vary significantly across variants.

🔩 Thread Compatibility: ISO Metric Coarse — M2×0.4 (2mm diameter, 0.4mm pitch). Compatible with standard M2 metric nuts, brass standoffs, threaded inserts, and tapped holes per ISO 68-1. Drive: see variant options (typically Phillips or slotted for wafer head style).

✅ Key Features of These M2 Thin Wafer Head Machine Screws

📏Ultra-Low-Profile Head — 0.4mm to 1.5mm Tall — The wafer head’s minimal height (as low as 0.4mm on select variants) makes these M2 low-profile screws the right choice for PCB assemblies, laptop chassis, and any application where standard head heights would cause interference.
🔘Wide Head Diameter for Built-In Load Distribution — Head diameters from 2.5mm to 7mm spread clamping force over a larger bearing area, reducing the risk of pull-through in thin panels and soft substrates — often eliminating the need for a separate washer.
🎨Four Finish Options for Different Environments — Ni-Plated for clean electronics use, Bright Zinc-Plated for general indoor applications, Black Zinc-Plated for optical and camera equipment where light reflection must be minimized, and Stainless Steel for corrosion-resistant installations.
📐13 Size Variants — Lengths 2mm to 21mm — From 2mm (≈5/64") for ultra-thin panel fastening to 21mm (≈13/16") for deeper assemblies, the range covers the most common M2 wafer head screw applications in electronics and precision instrument manufacturing.
📦Bulk Packs — 100, 200, or 500 Pieces — Sized for prototyping through production: a 100-pack suits bench repairs and prototypes, while a 500-pack supports assembly line stocking without the overhead of industrial minimum order quantities.
⚙️ISO M2×0.4 Metric Coarse Thread — Fully compatible with standard M2 nuts, brass PCB standoffs, and tapped holes, ensuring reliable thread engagement in the precision hardware ecosystems used in electronics and instrument manufacturing.

📐 Technical Specifications — M2 Thin Wafer Head Machine Screws

Head Style	Thin Wafer / Ultra-Low-Profile Flat Head
Thread Standard	ISO Metric Coarse — M2×0.4
Thread Diameter	M2 (2mm / ≈5/64")
Available Lengths	2mm / 2.5mm / 3mm / 4mm / 8mm / 8.5mm / 10mm / 21mm (see variant options)
Head Diameter Range	2.5mm – 7mm (varies by variant — see D= spec in variant name)
Head Height Range	0.4mm – 1.5mm (varies by variant — see D= spec in variant name)
Finish Options	Ni-Plated / Bright Zinc-Plated / Black Zinc-Plated / Stainless Steel
Material	Steel (zinc or nickel plated) or Stainless Steel (A2) — see variant
Pack Quantities	100 / 200 / 500 pcs
Property Class (Steel)	Typically 4.8 per ISO 898-1 — Contact us to confirm
Property Class (Stainless)	Typically A2-70 per ISO 3506 — Contact us to confirm
Recommended Max Torque	Typically 0.1–0.2 N·m for M2 — Contact us to confirm per variant
Country of Origin	See variant options

❓ Frequently Asked Questions

What does the "D=" dimension mean in the variant name?

The D= notation describes the wafer head dimensions: D = head diameter × head height. For example, D=6×1.2 means the head is 6mm in diameter and 1.2mm tall. This is the defining spec for wafer head screws — choose the head diameter that fits your countersink or clearance hole, and the head height that fits within your assembly’s available vertical space.

How do I choose the right screw length for M2 wafer head screws?

For flat/wafer head screws, the listed length is typically the total length including the head. A general rule: the screw should engage at least 1.5× the diameter in threaded material — for M2, that means at least 3mm of thread engagement. Quick inch reference: 2mm ≈ 5/64", 3mm ≈ 1/8", 4mm ≈ 5/32", 8mm ≈ 5/16", 10mm ≈ 3/8", 21mm ≈ 13/16". Measure your panel or PCB thickness and add the required thread engagement to select the correct length.

What is the difference between Ni-Plated, Zinc-Plated, Black Zinc-Plated, and Stainless Steel?

Ni-Plated (nickel) offers a silver appearance with good corrosion resistance and is commonly used in electronics and precision instruments where a clean, non-magnetic finish is preferred. Bright Zinc-Plated provides moderate corrosion resistance with a shiny silver look, suitable for general indoor use. Black Zinc-Plated offers the same corrosion protection as bright zinc but with a matte black finish — often chosen for optical or camera equipment to reduce light reflection. Stainless Steel provides the highest corrosion resistance and is suitable for outdoor or humid environments.

Are these screws suitable for PCB mounting and electronics assembly?

Yes. The ultra-low-profile wafer head is specifically designed for applications where vertical clearance is limited, such as PCB mounting, electronics enclosures, laptop and device assembly, and precision instrument panels. The wide head diameter distributes clamping force without requiring a washer, and the low head height keeps the assembly compact. Ni-plated variants are generally preferred in electronics for their clean appearance and non-magnetic properties.

What thread standard do these M2 screws follow, and are they compatible with standard M2 standoffs?

These screws use the ISO metric coarse thread standard: M2×0.4 (2mm nominal diameter, 0.4mm thread pitch). They are compatible with standard M2 metric nuts, brass PCB standoffs, threaded inserts, and tapped holes following ISO 68-1 — the standard used in most precision electronics and instrument hardware worldwide.

What is the tensile strength, and how much torque should I apply to M2 screws?

Steel variants are typically manufactured to property class 4.8 per ISO 898-1 (min. tensile strength ≈ 420 MPa); stainless steel variants are generally A2-70 per ISO 3506 (≈ 700 MPa). Due to the small cross-section of M2 screws, recommended torque is typically 0.1–0.2 N·m — overtightening will strip threads. Use a calibrated torque driver for production assembly. Contact us to confirm torque specs for your specific variant.

Which pack size should I order for my project or production line?

Pack sizes are 100, 200, and 500 pieces. A 100-pack suits prototyping, bench repairs, and small builds. A 200-pack is practical for small production runs or workshop stocking. The 500-pack offers the best per-unit value for assembly lines and high-volume manufacturing. All packs ship from our US warehouse.

🛒 Select your size and quantity above, then add to cart — ships from our US warehouse.