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Transparent compartment box filled with black M3 hex socket cap screws nuts and washers

DFDU Metric M3 Screws Assortment Kit 960pcs 12.9 Steel

SKU CH-710X-6J5KJ

A 960-piece M3 metric fastener kit with 12.9 grade steel bolts, nuts and washers in eight lengths from 6 mm to 30 mm, stored in a labelled compartment box

  • Main materialSteel
  • Sold asKit
  • Number of items960
  • Key featuresMetric M3 Screws Assortment Kit (960pcs), M3-0.5
  • 960-piece kit covers eight M3 lengths from 6mm to 30mm for versatile builds
  • 9 grade alloy steel delivers high tensile strength and wear resistance for secure fastening
  • Black zinc-plated coating resists rust and corrosion while giving a clean professional look
  • Precision M3 threads and hex socket drive ensure smooth engagement and stable torque transfer
  • Compartmentalised transparent box with size labels keeps 960 parts organised for quick identification

M3 Screw Kit for Precision Assembly

This 960-piece M3 metric screw assortment supplies hex socket head cap screws in eight lengths from 6 mm to 30 mm, together with matching hex nuts and washers. The kit is built for 3D printer maintenance, RC car repairs, drone builds, robotics projects and general mechanical assembly where consistent M3 fastening is required. All parts arrive new in a labelled compartment box for immediate workshop use.

12.9 Grade Alloy Steel Strength

Every bolt and nut is manufactured from 12.9 grade alloy steel, delivering high tensile strength and wear resistance for demanding fastening tasks. The black zinc-plated coating adds a layer of rust and corrosion protection while giving the hardware a clean, professional appearance on dark-coloured machinery and electronic equipment.

Eight Lengths Cover Common Build Needs

Lengths of 6, 8, 10, 12, 16, 20, 25 and 30 mm handle the majority of M3 mounting points found in printer frames, chassis plates and small structural joints. The hex socket drive ensures stable torque transfer and reduces slipping during tightening. Projects requiring M4, M5 or larger threads, or a different drive style, will need a separate hardware kit.

How it compares

Measured against everything we stock in Workshop Hardware, Springs & Clamps, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 60% of the 383 comparable items (median $17.99).

Specifications

Product
Brand nameDFDU
Model nameMetric M3 Screws Assortment Kit (960pcs)
Part numberDFDU-Bolt-960
Size & build
Main materialSteel
In the box
Number of items960

Questions about this item

How does the 12.9 grade alloy steel hold up once installed in a machine?

The 12.9 grade alloy steel provides high tensile strength, wear resistance and hardness so the screws resist stripping and maintain a secure hold under demanding fastening loads.

What does the M3-0.5 thread pitch mean for compatibility with other parts?

The M3-0.5 metric thread matches standard M3 nuts and tapped holes, giving consistent engagement with the included hex nuts and any correctly threaded M3 component.

What clearance do I need for the hex socket head cap screws in the kit?

Each screw has a hex socket drive that requires a hex key; the kit covers eight lengths from 6 mm to 30 mm, so allow enough depth for the chosen length plus the head height.

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