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Screws · ISO 14584 · Application guide

What Are Hexalobular Socket Oval Countersunk Head Screws Used For?

Typical applications, the industries that specify hexalobular socket oval countersunk head screws, and how to choose the right size, material and finish for the joint.

Hexalobular Socket Oval Countersunk Head Screws are used for a raised countersunk head with a hexalobular drive that sits in a countersink with a domed finish. They are manufactured to ISO 14584, 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
A raised countersunk head with a hexalobular drive that sits in a countersink with a domed finish
Governing standard
ISO 14584
Thread size range
M2 to M10
Category
Screws

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

What Are Hexalobular Socket Oval Countersunk Head Screws Used For? application image

Hexalobular Socket Oval Countersunk Head Screws are used primarily for a raised countersunk head with a hexalobular drive that sits in a countersink with a domed finish. This page lists the industries and assemblies where they are specified, the selection criteria that matter for each application, installation practice, and the cases where a different fastener type is the correct choice. Parts are supplied to ISO 14584. Stocked across roughly M2 to M10, they cover general to heavy-duty work.

Typical Applications for Hexalobular Socket Oval Countersunk Head Screws

The most common settings where these are specified:

  • Furniture hardware: visible fixings with a finished dome.
  • Architectural panels: facade trim where appearance matters.
  • Transport interiors: seat frames and panels that are serviced.
  • Machine covers: flush-mounted guards that need a neat head.

How to Specify Hexalobular Socket Oval Countersunk Head Screws for Your Application

  • Size: Match the nominal size to the mating thread or hole. This product spans M2–M10; check the full table below for the exact dimensions of each size.
  • 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 ISO 14584. 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 Hexalobular Socket Oval Countersunk Head Screws

  • 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 Hexalobular Socket Oval Countersunk Head Screws 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.

Custom manufacturing · Made to drawing

Need a hexalobular socket oval countersunk head screws outside the standard range?

Lengths and thread lengths outside the standard table are the commonest request, followed by a drive the standard does not offer and a head marked with your own part number. Made by cold heading or warm forging.

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

Custom screw manufacturingSend a drawing

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.

Dimensioned line drawing of M2 Hexalobular Socket Oval Countersunk Head Screws to ISO 14584. Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected.
Pitch P (mm)
0.4
b (mm)
25.0
Head diameter dk (mm)
4.4
csh_diam (mm)
3.8
f (mm)
0.5
csh_height (mm)
1.2
r (mm)
0.2
rf (mm)
4.0
x (mm)
1.0
tt (mm)
T6
A (mm)
1.75
t_mean (mm)
0.7
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 (ISO 14584)

SizePitch P (mm)b (mm)Head diameter dk (mm)csh_diam (mm)f (mm)csh_height (mm)r (mm)rf (mm)x (mm)tt (mm)A (mm)t_mean (mm)Length range l (mm)Reference standard
M20.425.04.43.80.51.20.24.01.0T61.750.73~20ISO 14584
M2.50.4525.05.54.70.61.50.35.01.1T82.41.03~25ISO 14584
M30.525.06.35.50.71.650.46.01.25T102.81.24~30ISO 14584
(M3.5)0.638.08.27.30.82.350.48.51.5T153.351.35~35ISO 14584
M40.738.09.48.41.02.70.59.51.75T203.951.55~40ISO 14584
M50.838.010.49.31.22.70.69.52.0T254.51.76~50ISO 14584
M61.038.012.611.31.43.30.712.02.5T305.62.28~60ISO 14584
M81.2538.017.315.82.04.651.016.53.2T457.953.010~60ISO 14584
M101.538.020.018.32.35.01.219.53.8T508.953.812~60ISO 14584
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 Hexalobular Socket Oval Countersunk Head Screws 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 Hexalobular Socket Oval Countersunk Head Screws made to a recognized standard?

Yes — they are manufactured to ISO 14584, so dimensions are interchangeable between suppliers when you quote the standard on your order.

What are Hexalobular Socket Oval Countersunk Head Screws used for?

A raised countersunk head with a hexalobular drive that sits in a countersink with a domed finish. They are supplied to ISO 14584.

Which industries use Hexalobular Socket Oval Countersunk Head Screws?

They are commonly specified in furniture hardware, architectural panels and transport interiors, among other sectors.

Can I get a quote for Hexalobular Socket Oval Countersunk Head Screws 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.