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Screws · Trade series (spoke nipples) · Application guide

What Are Bicycle Spoke Nipples Used For?

Typical applications, the industries that specify bicycle spoke nipples, and how to choose the right size, material and finish for the joint.

Bicycle Spoke Nipples are used for matching a bicycle service thread and pitch to the component location rather than diameter alone. They are manufactured to Trade series (spoke nipples), and the choice of size, property class and finish is driven by the load in the joint and the environment it sits in.

Primary duty
Matching a bicycle service thread and pitch to the component location rather than diameter alone
Governing standard
Trade series (spoke nipples)
Category
Screws

Application notes are general engineering guidance. Verify the property class and any approval requirement against your own design calculation.

What Are Bicycle Spoke Nipples Used For? application image

Bicycle Spoke Nipples (Trade series (spoke nipples)) are specified where the joint requires matching a bicycle service thread and pitch to the component location rather than diameter alone. The sections below cover the typical end-uses by industry, the size and material decisions for each, assembly practice, and the applications this fastener type is not suited to.

Typical Applications for Bicycle Spoke Nipples

The most common settings where these are specified:

  • Wheel building: Spoke nipples tension and retain spokes at the rim.
  • E-bike service: Brass nipples are preferred in the supplied guidance for higher service duty.
  • Performance wheels: Aluminum colors and thread-lock options support the wheel specification.
  • Bicycle repair: Length and spoke-thread family must match the spoke.

How to Specify Bicycle Spoke Nipples for Your Application

  • Size: Match the size to the mating part — see the dimension table below for each option.
  • Drive & head: Pick the drive (socket, cross, slot) and head style for the tool access and seating surface; a recessed drive resists cam-out under power tools.
  • Environment: For damp, coastal or chemical exposure prefer A4/316 stainless or a suitable coating; indoors, plated steel or A2 is usually sufficient.
  • Standard: This product is supplied to Trade series (spoke nipples). Quoting the standard on your order guarantees interchangeable dimensions between suppliers.

Installation & Assembly Practice

  • Match the driver exactly to the recess (PH ≠ PZ; hex key sizes per ISO 2936) and keep the tool axial — side load is the main cause of stripped drives.
  • In tapped holes, engage a thread length of at least 1× the nominal diameter in steel, 2× in aluminum.
  • Set power tools to a torque that seats the head without embedding it into the mating surface.

Common Selection Mistakes with Bicycle Spoke Nipples

  • Under-sizing the drive for the installation torque — a small recess at high torque strips before the screw is seated.
  • Using a countersunk head in thin sheet where the countersink removes most of the load-bearing material.
  • Specifying stainless in high-strength duty: A2-70 is roughly class 7 steel, not a 10.9 substitute.

Where Bicycle Spoke Nipples Are Not the Right Choice

Not for high-preload structural joints (use a property-class bolt and nut), and not in thin sheet where a self-drilling or self-tapping type suits better.

Technical Drawing

Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.

Sends the selected values to the quote form below.

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The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.

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Specification
Business Information

Dimensions & Specifications (Trade series (spoke nipples))

FormLength options (mm)Spoke thread familiesMaterial optionsThread lockColor options
Standard A12 / 14 / 14.5 / 161.8 / FG 2.0; 2.0 / FG 2.3; 2.34 / FG 2.6aluminum / brasswith or without thread-lock compoundblack / blue / gold / green / purple / red / silver / turquoise
Standard B12 / 14 / 14.5 / 161.8 / FG 2.0; 2.0 / FG 2.3; 2.34 / FG 2.6aluminum / brasswith or without thread-lock compoundblack / blue / gold / green / purple / red / silver / turquoise
Inside the plant

Manufactured in our own plant

This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.

  1. Wire rod feeding into a cold heading machine
    01

    Cold heading

    Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail.

    Head dimensions and under-head radius checked at set-up and per shift.

  2. Thread rolling machine producing bolt threads
    02

    Thread rolling

    Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch.

    Go / no-go ring gauges to ISO 965 tolerance class 6g.

  3. Baskets of bolts staged for heat treatment
    03

    Heat treatment

    Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it.

    Core hardness and tensile tested per lot to ISO 898-1.

  4. Zinc plated bolts in a treatment basket
    04

    Surface treatment

    Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list.

    Coating thickness and neutral salt spray hours to ISO 9227.

Frequently Asked Questions

What material should Bicycle Spoke Nipples be for outdoor use?

For damp, coastal or chemical environments specify A4 (316) stainless or a suitably coated steel. For indoor or dry use, A2 (304) stainless or zinc-plated steel is normally adequate.

Are Bicycle Spoke Nipples made to a recognized standard?

Yes — they are manufactured to Trade series (spoke nipples), so dimensions are interchangeable between suppliers when you quote the standard on your order.

What are Bicycle Spoke Nipples used for?

Matching a bicycle service thread and pitch to the component location rather than diameter alone. They are supplied to Trade series (spoke nipples).

Which industries use Bicycle Spoke Nipples?

They are commonly specified in performance wheels, bicycle repair and wheel building, among other sectors.

Can I get a quote for Bicycle Spoke Nipples in the size and material I need?

Yes. Use the technical drawing and quote form on this page to set the size and options, then send the exact configuration to our team for pricing and lead time.