We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Clear compartmentalised case holding 750 black M3 hex socket head bolts nuts washers

Fgruh M3 Screws Assortment Kit 750pcs Hex Socket Head Bolts Nuts Washers 12.9 Steel

SKU CH-G2QH-SM3JF

750-piece M3 fastener kit with hex socket head bolts, nuts and washers in eight lengths from 6 mm to 30 mm, made from 12.9 grade alloy steel with black zinc plating

  • Main materialSteel
  • Sold asKit
  • Number of items750
  • Key featuresMetric M3 Screws Assortment Kit (750pcs), M3-0.5
  • 750-piece kit covers M3 × 6 to 30 mm for 3D printing and DIY repairs
  • 9 grade alloy steel delivers high tensile strength for heavy loads
  • Black zinc plating resists rust without leaving oily residue
  • Compartmentalised case with labelled slots keeps fasteners organised and visible
  • Thread pitch M3-0.5 with average tolerance under 0.01 mm ensures precise fit

Ideal for 3D printing and DIY repairs

This 750-piece M3 screw assortment kit suits hobbyists working with 3D printers, electronics, RC models and CNC machinery. It supplies hex socket head bolts, nuts and washers in eight standard lengths for routine installations and precise fastening tasks.

Check your thread pitch and length needs

Verify that your project requires M3-0.5 metric threads before ordering. The kit covers lengths of 6, 8, 10, 12, 16, 20, 25 and 30 mm; confirm these match the hole depths and material thicknesses in your build.

12.9 grade steel with black zinc plating

Bolts, nuts and washers are made from 12.9 grade alloy steel for high load-bearing capacity and wear resistance. Black zinc plating provides rust protection without oily residue, keeping hands and workpieces clean during indoor or light outdoor use. The compartmentalised case labels each size for quick identification.

How it compares

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

Price $16.99
Cheaper than about 55% of the 383 comparable items (median $17.99).

Specifications

Product
Brand nameFgruh
Model nameMetric M3 Screws Assortment Kit (750pcs)
Part numberFG001-11
Size & build
Main materialSteel
In the box
Number of items750

Questions about this item

What comes inside the 750-piece M3 kit and do I need to buy anything else?

The set supplies 750 pieces covering M3 hex socket head bolts in 6, 8, 10, 12, 16, 20, 25 and 30 mm lengths plus matching nuts and washers, all organised in a labelled compartment case.

Which length should I pick for a typical 3D printer frame?

Common frame joints use 10 mm to 20 mm bolts; the kit includes every size in that range so you can match the exact plate thickness.

What does the 12.9 grade mean for holding power in a machine build?

Grade 12.9 alloy steel delivers the highest standard tensile strength for metric fasteners, giving reliable clamping force under vibration and heavy loads.

More in Workshop Hardware, Springs & Clamps

Similar items