Bicycle Industry Threads

Nominal Thread SizeExample of Bicycle Uses
4mm x 0.75mmCommon derailleur limit screw (JIS standard)
5mm x 0.8mmMany uses on bicycles, including derailleur wire pinch bolts/nuts, disc rotor mounting bolts, fender and racks mounts, water bottle cage bolts, and others

How do you lock a bolt to prevent theft?

Stop Thieves With Welded Eye Bolts Run a welded eye bolt through one of the studs in your garage and lock your ladder or boat to it with a chain or cable lock. It will at least slow down someone who might want to grab and go.

What size is the nut on a bike wheel?

If it’s 5/16″ at 26 threads per inch then an M8-1.00 nut may fit since 25.4 tpi is very close to 26 tpi and 7.9mm diameter is very close to 8mm. First try your LBS, take the wheel with you….8 Answers.

Nominal Thread SizeExample of Bicycle Uses
5/16 inch x 24 tpiFront hubs, solid axle, less expensive bikes

Can you replace quick release?

Now it was to to replace the quick release with the bolts by reinserting the new axle into the hub. You can then proceed to press the bearing into place using the washers on both sides, the axle nuts on both sides, and in my case, two adjustable wrenches. …

What size is an M5 screw?

Metric clearance and tapping drill hole sizes.

SizeClearance Hole mmTapping Drill (std Pitch)
M55.54.2 mm
M66.55.0 mm
M896.75 mm
M10118.5 mm

What diameter is an M4 screw?

4 millimetres
The M4 machine screw has a thread diameter of 4 millimetres, in simple terms the M stands for millimetres followed by the size – in this case 4 mm.

How do you measure a bike nut?

Stretch the tape measure across the nut’s diameter to the flat-side directly across from the one your pulling from. If the nut is metric, count the number of lines on the tape measure to find the measurement. If you count 9 lines, the size is a 9-mm (millimeter) nut.

How do I know what size axle I need for my bike?

Measure the straight length of your axle shaft. Do not include the axle head or tapered spacer, if there is one. Axle length is not the same as hub length. A bike with a 12×142 hub standard will have a significantly longer axle since it will have to go through the frame on both sides of the 142mm wide hub.

What are the best security screws?

Bryce security screws should be your best first line of defense against loss, theft, unauthorized entry and vandalism. Bryce manufactures some of the only truly tamper proof screws in the world.

Where are Bryce screws made?

Bryce is a U.S. custom screw manufacturer located in Gilbert, Arizona. The vandal proof security screws, tamper proof bolts, tamper resistant screws, security nuts and other security fasteners Bryce manufactures are simply the finest in the world. Tamperproof security fasteners is all we manufacture.

How do you know if your bike is stolen?

If your bike is disturbed, the thief will hear an audio alarm and you will receive an alert telling you your bike is being tampered with. GPS tracks bike within 10’ if thief gets away. Use It. Or Lose It.

Why choose Key-Rex® security screws?

As unique as your fingerprint. More secure than any tamper-proof screw on the market. The Key-Rex® fastener can’t be removed without its perfectly matched driver bit. It’s uniquely our own — only we have the key. I never knew we could have security screws with a drive designed specifically for our company.