Bolt Extenders - Andrews Fasteners CE Approved Bolts, Nuts & Washers

Andrews Fasteners Ltd

AndFast Malaysia SDN BHD

The Fasteners Specialist

0113 246 9992
+44 (0) 113 246 9992
Bolt Extenders image

Bolt Extenders

Bolt Extenders – Specification

Internal thread diameter (d)* Pitch of thread External diameter, shank diameter (D) Nominal length, ref. (m) Minimum tensile strength**
d p D mm kN
M12 1.75 M20 60 70
M16 2 M24 100 130
M20 2.5 M30 100 203
M22 2.5 M33 100 252
M24 3 M36 100 293
M27 3 M39 100 381
M30 3.5 M42 120 466
M33 3.5 M45 120 576
M36 4 M48 120 678

Bolt extenders are manufacturer from Grade 8.8 Carbon Steel blank bolts.
Other grades and type of steel may be considered.

*) Internal thread to suite self-colour bolts, studs or square-square bolts (sqsq bolts). For thick finish (like galvanising) internal thread is tapped oversize to suite.

**) minimum tensile strength based on a minimum of six full threads screwed into an internal thread on both sides of the bolt extender

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