Andrews Fasteners Ltd

AndFast Malaysia SDN BHD

The Fasteners Specialist

+44 (0) 113 246 9992

Bolt Extenders

Bolt Extenders – Specification

Internal thread diameter (d)*Pitch of threadExternal diameter, shank diameter (D)Nominal length, ref. (m)Minimum tensile strength**
dpDmmkN
M121.75M206070
M162M24100130
M202.5M30100203
M222.5M33100252
M243M36100293
M273M39100381
M303.5M42120466
M333.5M45120576
M364M48120678

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