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M16 hex flange bolt size

24 mm wrench
wrench size for M16 flange bolt

M16 flange bolt — Heavy structural, machinery.

Full specification

SystemMetric coarse
Nominal diameter16 mm
Thread pitch2.0 mm
Wrench size24 mm
Tap drill14 mm
Clearance hole17.5 mm
Common grade / class8.8
Typical torque180 Nm (132.8 ft·lb)

About M16 flange bolts

Heavy structural, machinery.

Hex flange bolts have an integrated washer face under the head, which distributes load over a wider area. This eliminates the need for a separate washer and provides better resistance to vibration loosening.

Commonly used in automotive applications, sheet metal work, and machinery where vibration resistance is important.

Frequently asked questions

What size wrench fits M16 flange bolt?
M16 flange bolt uses a 24 mm wrench.
What is the torque for M16 flange bolt?
Typical torque for M16 flange bolt in 8.8 is about 180 Nm (132.8 ft·lb).
What are flange bolts used for?
M16 flange bolts are used in heavy structural, machinery.