M6 Friction-Bearing Ball Spring Plungers Dimensions
Controlling dimensions to Trade series (GN 615.8), with tolerances and fit.
M6 Friction-Bearing Ball Spring Plungers dimensions to Trade series (GN 615.8): coarse thread pitch 1 mm.
Coarse thread pitch
1 mm
Figures are nominal values from the governing standard. Confirm against the tolerance class for your application before machining or ordering.
The M6 size of Friction-Bearing Ball Spring Plungers is dimensioned by Trade series (GN 615.8). The table below gives the dimensional row from the standard, followed by the installation notes for this type.
M6 Dimensional Row (Trade series (GN 615.8))
Thread size
Length L (mm)
Ball diameter (mm)
Standard spring initial/end load (N)
High-load spring initial/end load (N)
Housing material
M6
14
2.5
6.3 / 10
11 / 16
blackened steel or AISI 303 stainless
Technical Drawing
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Dimensions & Specifications (Trade series (GN 615.8))
Thread size
Length L (mm)
Ball diameter (mm)
Standard spring initial/end load (N)
High-load spring initial/end load (N)
Housing material
M5
12
2
4.8 / 6.8
10 / 14
blackened steel or AISI 303 stainless
M6
14
2.5
6.3 / 10
11 / 16
blackened steel or AISI 303 stainless
M8
16
3.5
16 / 24
23 / 40
blackened steel or AISI 303 stainless
M10
19
4.5
18.8 / 31.7
28 / 54.3
blackened steel or AISI 303 stainless
M12
22
6.5
26 / 49
39.5 / 77.3
blackened steel or AISI 303 stainless
M16
24
8.5
38 / 68
50 / 88.7
blackened steel or AISI 303 stainless
Applications & Industries for M6 Friction-Bearing Ball Spring Plungers
What Friction-Bearing Ball Spring Plungers are specified for, industry by industry. Stocked from M5 to M16.
Industries that specify Friction-Bearing Ball Spring Plungers
Drawer and slide hardwareBall contact that holds a small mechanism in position.
Assembly toolingReplaceable contact elements on changeover fixtures.
Positioning mechanismsFriction-bearing ball plungers for repeat contact on a moving surface.
Fixture platesDetent points where low rolling or sliding friction matters.
Agricultural & plantImplement connections made and broken in the field.
Gearboxes & housingsDowelled joints where the bolts clamp and the pins locate.
Typical applications
locating a slide without dragging a plain nose across the surface
matching ball diameter and housing material to repeated contact duty
providing a friction-bearing ball contact with a defined spring load
selecting standard or high-load initial and end-force values
locating two parts to a repeatable position
pivot and hinge joints loaded in shear
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.
Hole preparation
The hole is half the specification: a ground dowel needs a reamed H7 hole, a grooved or spring pin will hold in a drilled one.
Where to use something else
Do not read initial and end spring force as a static clamp rating or structural preload.
Video: M6 Friction-Bearing Ball Spring Plungers Dimensions
Third-party video, selected automatically for this topic. It is not produced by Engineering Hardware and is not a specification source — use the tables on this page for dimensional data.
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.
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.
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.
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.
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 clearance and tapping drill suit M6?
Use a 6.6 mm clearance hole (ISO 273 medium) for through-fixing, or a 5 mm tapping drill for a coarse M6 thread.
What is the coarse-thread pitch of M6 for Friction-Bearing Ball Spring Plungers?
For M6 the standard coarse pitch is 1 mm — this is the value used for Friction-Bearing Ball Spring Plungers.
How do I request a quotation?
Use the technical drawing on this page to pick the exact configuration, then submit it with the quote form. We respond within one business day.
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