Bismi Bolt House
Allen Key

Allen Bolts & Screws

Allen Key

Hardened L-shaped hex Allen keys (DIN 911) from 1.5 mm to 19 mm, single and in sets, to fit every Allen bolt and grub screw.

Allen Key specifications
MaterialChrome vanadium steel, Alloy steel
Sizes available1.5 mm to 19 mm, Inch sizes on request
FinishBlack, Chrome
StandardsDIN 911, ISO 2936
PricePrice on request – depends on size and quantity
AvailabilityIn stock for Trichy & Thanjavur. Delivered across Tamil Nadu and all over India.

Need a price or bulk quantity?

Send us the size and quantity on WhatsApp. Pick up in Trichy & Thanjavur, or we deliver across Tamil Nadu and all over India. We usually reply within working hours (Mon – Sat, 9:00 AM – 8:00 PM).

About Allen Key

Allen keys (hex keys) are hardened L-shaped keys for socket screws. The short end gives torque, the long end gives reach. We sell single keys and sets from 1.5 mm to 19 mm.

Quick guide: M5 bolt → 4 mm key, M6 → 5 mm, M8 → 6 mm, M10 → 8 mm, M12 → 10 mm.

Common applications

  • Allen bolts, CSK and button head screws
  • Grub screws on pulleys and collars
  • Machine maintenance

Frequently asked questions

›Which Allen key fits an M8 Allen bolt?

A 6 mm key fits an M8 Allen bolt. M6 takes 5 mm, M10 takes 8 mm and M12 takes 10 mm.

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