M5×0.8 Bicycle Brake Caliper Mounting Bolts (Trade series (bicycle caliper mounting bolts)) are specified by thread size, length and head dimensions. The M5×0.8 row from the standard is reproduced below, followed by the drill sizes, spanner size and torque values used when installing this size.
M5×0.8 Dimensional Row (Trade series (bicycle caliper mounting bolts))
| Thread size | Length options | Mount form | Drive / washer | Selection rule |
|---|
| M5×0.8 | 10 / 15 mm or frame-selected | flat-mount | hex socket or Torx with washer | frame/chainstay stack plus required engagement |
Spanner & Drive for M5×0.8 Bicycle Brake Caliper Mounting Bolts
Drive geometry for M5×0.8 Bicycle Brake Caliper Mounting Bolts is given by the row above; match the tool to the listed values.
M5×0.8 Bicycle Brake Caliper Mounting Bolts Weight
A steel M5×0.8 bicycle brake caliper mounting bolts at the listed 1,015 mm length weighs approximately 16,149 g each — about 16,149 kg per 1,000 pieces. Stainless A2/A4 weighs roughly the same (density 7.9–8.0 g/cm³).
Actual weight varies slightly with head form, thread and finish; use this figure for freight estimation only.
Installation Tips for M5×0.8 Bicycle Brake Caliper Mounting Bolts
- At M5×0.8 the stretch in the bolt becomes the controlling factor — for critical joints, use angle-controlled or stretch-controlled tightening instead of pure torque.
Mating Parts for M5×0.8
For M5×0.8, pair with a M5×0.8 hex nut (ISO 4032 / DIN 934) and, where used, a M5×0.8 flat washer (ISO 7089 / DIN 125A) under the head and under the nut.
Custom manufacturing · Made to drawing
Need bicycle brake caliper mounting bolts in a size this table does not list?
This page covers M5×0.8 bicycle brake caliper mounting bolts. Material and finish are usually what drives a special — a grade the standard part is not stocked in, or a coating chosen against a salt-spray figure instead of a default. Made by cold heading or hot forging.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
Custom bolt manufacturingSend a drawing
Applications & Industries for M5×0.8 Bicycle Brake Caliper Mounting Bolts
What Bicycle Brake Caliper Mounting Bolts are specified for, industry by industry. Stocked from M5×0.8 to M6×1.0.
Industries that specify Bicycle Brake Caliper Mounting Bolts
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Mountain bikes
Post-mount hardware uses a different mounting geometry from flat mount.
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Brake repair
Washer and drive style follow the caliper manufacturer.
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Bicycle assembly
M5 flat-mount and M6 post-mount hardware position a brake caliper.
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Bike service
Frame and chainstay thickness determine the bolt length.
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Machine building & OEM
The default fastener on production equipment: covers, brackets, motor mounts and sub-assemblies tightened to a specified torque.
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Automotive & transport
Chassis, driveline and body fixings that see vibration and are assembled to a controlled preload.
Typical applications
- calculating length from frame thickness and engagement
- using the specified drive and washer arrangement
- mounting a brake caliper to a frame boss
- selecting M5 flat-mount or M6 post-mount hardware
- assemblies that are dismantled for service and re-torqued
- joints where the property class is stated on the drawing
Service conditions to specify against
- Marine and coastal
- Available in A4 (316) stainless for chloride exposure — coastal structures, pool halls, water treatment and deck hardware, where A2 will eventually pit.
- High load
- Supplied in ISO 898-1 property classes, so the joint can be designed to a stated proof load and tightened to a calculated torque rather than by feel.
- Torque and preload
- The joint is designed around bolt tension, so lubrication, coating and the friction coefficient all change the torque figure — state them together.
Where to use something else
- Do not install a flat-mount length in a post-mount position; insufficient engagement or bottoming can damage the caliper.
- Do not use a machine thread into unthreaded sheet or timber; use a tapping screw, rivet nut or insert made for that parent material.
Full application guide: where Bicycle Brake Caliper Mounting Bolts are used, how to specify them, and the cases they are wrong for
