---
title: "What Are Wheel Nuts, Conical and Ball Seat Used For?"
description: "Wheel Nuts, Conical and Ball Seat (Trade series (wheel nut)) are used for mounting a road wheel to a hub, where the seat form has to match the wheel and the…"
url: https://engineeringhardware.com/applications/wheel-nuts-conical-seat/
source: Engineering Hardware & Fasteners
---

# What Are Wheel Nuts, Conical and Ball Seat Used For?

Nuts · Trade series (wheel nut) · Application guide

Typical applications, the industries that specify wheel nuts, conical and ball seat, and how to choose the right size, material and finish for the joint.

Wheel Nuts, Conical and Ball Seat are used for mounting a road wheel to a hub, where the seat form has to match the wheel and the joint is torqued dry. They are manufactured to Trade series (wheel nut), 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:** Mounting a road wheel to a hub, where the seat form has to match the wheel and the joint is torqued dry
- **Governing standard:** Trade series (wheel nut)
- **Thread size range:** M12 to M22
- **Category:** Nuts

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

![What Are Wheel Nuts, Conical and Ball Seat Used For? application image](https://engineeringhardware.com/wp-content/uploads/2026/09/Wheel-Nuts.webp)

Wheel Nuts, Conical and Ball Seat (Trade series (wheel nut)) are specified where the joint requires mounting a road wheel to a hub, where the seat form has to match the wheel and the joint is torqued dry. 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. Stocked across roughly M12 to M22, they cover heavy and structural work.

## Typical Applications for Wheel Nuts, Conical and Ball Seat

The most common settings where these are specified:

- **Maintenance & repair (MRO):** a stocked size for servicing existing plant where the original fastener spec must be matched.
- **Fabrication & metalwork:** bench and on-site assembly of steel frames, enclosures and weldments.
- **Bolted joints:** the clamping counter-face on studs and bolts across every assembly type.
- **Vibration-prone equipment:** where a locking or flanged style resists loosening.
- **Frames & weldments:** captive or welded options for repeatable assembly.

Product catalog

## Related Wheel & Lug Nuts products

[![High-Strength OEM ODM T/Zzb 1669 Fillister Head Hub Bolts for Automotive Wheels](https://img.engineeringhardware.com/High-Strength-OEM-ODM-T-Zzb-1669-Fillister-Head-Hub-Bolts-for-Automotive-Wheels.webp)](https://engineeringhardware.com/product/high-strength-oem-odm-t-zzb-1669-fillister-head-hub-bolts-for-automotive-wheels/)

Wheel, Lug, Hub & Track Bolts

### [High-Strength OEM ODM T/Zzb 1669 Fillister Head Hub Bolts for Automotive Wheels](https://engineeringhardware.com/product/high-strength-oem-odm-t-zzb-1669-fillister-head-hub-bolts-for-automotive-wheels/)

Fillister Head Hub Wheel Bolt · DIN, ANSI, GB, JIS, BSW, GOST

**US$0.012 – 0.048**MOQ 1,000 pieces

[![Replacement Car Spare Parts Auto Wheel Hub Bolt and Nut, Car Fastener Accessories M12X1.5 Wheel Nut](https://img.engineeringhardware.com/Replacement-Car-Spare-Parts-Auto-Wheel-Hub-Bolt-and-Nut-Car-Fastener-Accessories-M12X1-5-Wheel-Nut.webp)](https://engineeringhardware.com/product/replacement-car-spare-parts-auto-wheel-hub-bolt-and-nut-car-fastener-accessories/)

Wheel, Lug, Hub & Track Bolts

### [Replacement Car Spare Parts Auto Wheel Hub Bolt and Nut, Car Fastener Accessories M12X1.5 Wheel Nut](https://engineeringhardware.com/product/replacement-car-spare-parts-auto-wheel-hub-bolt-and-nut-car-fastener-accessories/)

Hexagon Head With Flange · ISO9001 / IATF16949

**US$0.24 – 0.72**MOQ 5,000 sets

[![High Strength China Hub Bolt M22*1.5/M20*1.5*130mm](https://img.engineeringhardware.com/High-Strength-China-Hub-Bolt-M22-1-5-M20-1-5-130mm.webp)](https://engineeringhardware.com/product/high-strength-china-hub-bolt-m22-1-5-m20-1-5-130mm/)

Wheel, Lug, Hub & Track Bolts

### [High Strength China Hub Bolt M22*1.5/M20*1.5*130mm](https://engineeringhardware.com/product/high-strength-china-hub-bolt-m22-1-5-m20-1-5-130mm/)

Round Head · GB

**US$0.12 – 2.40**MOQ 3,000 pieces

[![Factory Screw Customized Lug Bolt Square Bolts for Machine](https://img.engineeringhardware.com/Factory-Screw-Customized-Lug-Bolt-Square-Bolts-for-Machine.webp)](https://engineeringhardware.com/product/factory-screw-customized-lug-bolt-square-bolts-for-machine/)

Wheel, Lug, Hub & Track Bolts

### [Factory Screw Customized Lug Bolt Square Bolts for Machine](https://engineeringhardware.com/product/factory-screw-customized-lug-bolt-square-bolts-for-machine/)

Standard · Cemented Carbide

**US$3.60 – 120.00**MOQ 1 piece

[![High Strength 10.9 / 12.9 Grade Front Wheel Hub Bolt and Nut for Volvo Series Heavy Duty Truck 20515517](https://img.engineeringhardware.com/High-Strength-10-9-12-9-Grade-Front-Wheel-Hub-Bolt-and-Nut-for-Volvo-Series-Heavy-Duty-Truck-20515517.webp)](https://engineeringhardware.com/product/high-strength-10-9-12-9-grade-front-wheel-hub-bolt-and-nut-for-volvo-series-heavy/)

Wheel, Lug, Hub & Track Bolts

### [High Strength 10.9 / 12.9 Grade Front Wheel Hub Bolt and Nut for Volvo Series Heavy Duty Truck 20515517](https://engineeringhardware.com/product/high-strength-10-9-12-9-grade-front-wheel-hub-bolt-and-nut-for-volvo-series-heavy/)

Auto Fasteners · 45mm - 130mm (Custom lengths available)

**US$1.02 – 1.20**MOQ 3,000 pieces

[![Nissan Truck Wheel Bolt Factory Manufactured Grade 10.9/12.9 Size M30*3.0/M20*2.0*135 Wheel Hub Bolts](https://img.engineeringhardware.com/Nissan-Truck-Wheel-Bolt-Factory-Manufactured-Grade-10-9-12-9-Size-M30-3-0-M20-2-0-135-Wheel-Hub-Bolts.webp)](https://engineeringhardware.com/product/nissan-truck-wheel-bolt-factory-manufactured-grade-10-9-12-9-size-m30-3-0-m20-2-0/)

Wheel, Lug, Hub & Track Bolts

### [Nissan Truck Wheel Bolt Factory Manufactured Grade 10.9/12.9 Size M30*3.0/M20*2.0*135 Wheel Hub Bolts](https://engineeringhardware.com/product/nissan-truck-wheel-bolt-factory-manufactured-grade-10-9-12-9-size-m30-3-0-m20-2-0/)

Tire Bolts and Nuts · ISO9001 / IATF16949

**US$1.70 – 1.92**MOQ 3,000 pieces

[View all Wheel, Lug, Hub & Track Bolts →](https://engineeringhardware.com/fastener-products/bolts/wheel-lug-hub-track-bolts/) [Full product catalog](https://engineeringhardware.com/products/)

## How to Specify Wheel Nuts, Conical and Ball Seat for Your Application

- **Size:** Match the nominal size to the mating thread or hole. This product spans M12–M22; check the full table below for the exact dimensions of each size.
- **Locking & grade:** Match the strength grade to the bolt, and choose a locking style (nyloc, all-metal, serrated flange) if the joint sees vibration.
- **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 (wheel nut). Quoting the standard on your order guarantees interchangeable dimensions between suppliers.

## Installation & Assembly Practice

- Run the nut down by hand before applying the wrench to catch cross-threading early.
- Tighten the nut rather than the bolt head where access allows — the torque-to-preload relation is more consistent.
- For locking styles, note that nyloc inserts are single-use in critical joints and lose grip above roughly 120 °C.

## Common Selection Mistakes with Wheel Nuts, Conical and Ball Seat

- Pairing a high-class bolt with a lower-class nut — the nut strips before the bolt reaches proof load; the nut class must meet or exceed the bolt class.
- Using a plain nut with a spring washer in severe vibration instead of a prevailing-torque locking nut.
- Re-using nyloc nuts in critical joints.

## Where Wheel Nuts, Conical and Ball Seat Are Not the Right Choice

Not on their own — they need a matching bolt or stud — and a plain nut is not a substitute for a locking type under heavy vibration.

Custom manufacturing · Made to drawing

## Need a wheel nuts, conical and ball seat outside the standard range?

Height and across-flats are the two most often changed — a thinner nut for clearance, a larger hex for a tool that is already on the line. Made by cold heading or tapping.

Minimum order from 2,000 pieces; samples within 7 days of drawing approval.

[Custom nut manufacturing](https://engineeringhardware.com/custom/nuts/)[Send a drawing](https://engineeringhardware.com/custom/nuts/#rfq)

## Technical Drawing

Dimensioned line drawing of M12 Wheel Nuts, Conical and Ball Seat to Trade series (wheel nut). Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected.

- **Pitch (mm):** 1.25
- **Seat type:** Conical 60°
- **Width across flats s (mm):** 17
- **Total height m (mm):** 20
- **Typical torque (Nm):** 110
- **Material:** Class 10 steel
- **Finish:** Zinc / chrome cap

## Dimensions & Specifications (Trade series (wheel nut))

| Thread size | Pitch (mm) | Seat type | Width across flats s (mm) | Total height m (mm) | Typical torque (Nm) | Material | Finish |
| --- | --- | --- | --- | --- | --- | --- | --- |
| M12 | 1.25 | Conical 60° | 17 | 20 | 110 | Class 10 steel | Zinc / chrome cap |
| M12 | 1.5 | Conical 60° | 19 | 20 | 110 | Class 10 steel | Zinc / chrome cap |
| M12 | 1.5 | Ball / radius R13 | 19 | 20 | 110 | Class 10 steel | Zinc / chrome cap |
| M14 | 1.5 | Conical 60° | 19 | 24 | 140 | Class 10 steel | Zinc / chrome cap |
| M14 | 1.5 | Ball / radius R14 | 21 | 24 | 140 | Class 10 steel | Zinc / chrome cap |
| M22 | 1.5 | Conical 60° | 32 | 32 | 600 | Class 10 steel | Zinc, commercial vehicle |

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](https://engineeringhardware.com/wp-content/uploads/2026/08/09-wire-rod-feed-cold-heading-machine.webp) 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](https://engineeringhardware.com/wp-content/uploads/2026/08/03-thread-rolling-machine-bolt-production.webp) 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](https://engineeringhardware.com/wp-content/uploads/2026/08/05-heat-treatment-baskets-black-bolts.webp) 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](https://engineeringhardware.com/wp-content/uploads/2026/08/23-zinc-plated-bolts-treatment-basket.webp) 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

### Which industries use Wheel Nuts, Conical and Ball Seat?

They are commonly specified in frames & weldments, general machine building and maintenance & repair (mro), among other sectors.

### How do I choose the right size of Wheel Nuts, Conical and Ball Seat?

Match the nominal size to the mating thread or hole. This product is available from M12 to M22; the full dimension table on this page lists each size.

### Do Wheel Nuts, Conical and Ball Seat need a locking feature?

If the joint sees vibration or cyclic load, use a locking style (nyloc, all-metal lock, or serrated flange) or a thread-locking adhesive. For static joints a standard nut tightened correctly is usually sufficient.

### What material should Wheel Nuts, Conical and Ball Seat 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.

### Can I get a quote for Wheel Nuts, Conical and Ball Seat 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.

## Related Pages

Product page: [Wheel Nuts, Conical and Ball Seat — specifications & sizes](https://engineeringhardware.com/fastener/wheel-nuts-conical-seat/)

### Wheel Nuts, Conical and Ball Seat Specification Guides

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