Speaker Spikes, M6, M8, M10, Spike Inserts and Spike Shoes
How to Fit Speaker Spikes
Introduction.
There are a number of LOUDSPEAKER SPIKES of various lengths and thread sizes to suit most Loudspeaker Cabinet weights. Spikes are usually fitted in sets of four per cabinet, to maintain stability. A Wood Insert and Locknut are also required to complete the fitting.
Spike Materials.
Different materials can be used to manufacture spikes. The most common being Steel, Stainless Steel and Brass. Common thread diameters are in metric sizes, and this determines the overall size and to a lesser extent the weight loading that each type can support. Spikes are available in M6, M8 and M10 thread pitch and generally range from around 32mm to 55mm in overall length.
Spike Surface Finishes
Untreated Steel spikes tend to rust and so are usually
processed with a chemical finish known as chemi-black. This finish is known as a cosmetic finish and is not
suitable for exterior / outdoor use or in very damp conditions.
Alternatively, a Chemical process known as BZP, (Bright Zinc Plate),
can be applied which gives a shinny silver finish and is far more robust in adverse conditions. It is not, however,
widely used.
Gold plated finishes and nickel plate are other options but these types of plating make the items more expensive than
simple CB (chemi-black) finish.
Stainless steel Spikes are by nature more resistant to degradation and discolouration. They retain their machined finish well
and being of a harder material and more awkward to machine and more expensive.
Lastly, brass finished spikes take on their natural material colour but over time they tarnish and are usually coated
with a transparent varnish coating. Even so this eventually fades so....
Wood Inserts for Spikes.
WOOD INSERTS are available in two styles for fixing the speaker
spikes to wood or composite materials. One style is based upon a press or push fit, known as Knock-in
wood inserts. They have good twist / rotational resistance. The head of the Knock-in has a robust flange
or shoulder.
Whilst known as Knock-ins it's not a great idea to hammer them into MDF based wood materials as
these are generally weak and may shatter.
The alternative, known as Screw-in wood inserts, have a sharp
cutting thread and a small lipped flange to aid in depth setting.
Tee Nuts are another type of self clinching fitting with three or
four prongs. These close within the wood when hammered in and are resistant to twist. These items are all sold
in packs of 8 pieces.
Spike Locknuts
BLACKED Spike Locknuts are available to suit either M6 or M8 threads. Locknuts can be supplied as either Full Nuts or Half Nuts where Half Nuts are thinner and are best suited for use with short spikes. Locknuts can also be supplied in Stainless Steel, usually the Half Nut variety. Tee Nuts are another type of self clinching fitting with three or four prongs. These prongs are profiled to close within the wood when hammered in and are resistant to twist. These items are all sold in packs of 8 pieces.
Spike Kit
Complete kits of Spike parts are available in M6, M8 or M10 thread, consisting of a loudspeaker spike, wood insert and locknut. These are also sold in packs of 8.
Spike Shoes
The pressure generated at the tip of a loaded loudspeaker spike
is considerable and can easily damage some surfaces like wooden floors. To protect wooden floors and
shelves, blacked steel spike shoes 13mm diameter can be placed underneath the spike tip.
larger Acetal spike shoes 24mm diameter and in three colours are available to enhance the visual appeal.
A range of
View here Drills and Allen keys
for fitting speaker spikes.
M6 Loudspeaker Spikes

M6 LOUDSPEAKER SPIKE OPTIONS
- M6 48mm Plain Spike with Screw-In Insert and Full Nut Locknut.
- M6 48mm Plain Spike.
- M6 40mm Knurled Spike with Knock-In Insert and Half Nut Locknut.
- M6 40mm Knurled Spike.
- M6 32mm Knurled Spike with Tee Nut and Half Nut Locknut.
- M6 32mm Knurled Spike.
Order Code | Description | 1+ | 6+ | 11+ |
---|---|---|---|---|
M6 Loudspeaker Spikes |
||||
SP0M6P48 | M6 Plain Blacked Spikes 48mm | 6.59 /8 | 6.28 /8 | 5.93 /8 |
SP0M6K40 | M6 Knurled Blacked Spikes 40mm | 6.46 /8 | 6.15 /8 | 5.81 /8 |
SPOM6K32 | M6 Knurled Blacked Spikes 32mm | 6.87 /8 | 6.54 /8 | 6.18 /8 |
M8 Loudspeaker Spikes

M8 LOUDSPEAKER SPIKE OPTIONS
- M8 57mm Spike.
- M8 50mm Knurled Blacked Spike with Screw-In Insert and Full Nut Locknut.
- M8 45mm Knurled Black Spike with Push-In insert and Half Nut Locknut
- M8 40mm Knurled BZP Spike with BZP Half Nut Locknut.
- M8 40mm Knurled Black Spike with Tee Nut and Half Nut Locknut.
- M8 35mm Dual Ended Ball and Spike with Half Nut Locknut.
- M8 35mm Knurled Black Spike.
Order Code | Description | 1+ | 6+ | 11+ |
---|---|---|---|---|
M8 Loudspeaker Spikes |
||||
SP0M8P57 | M8 Plain Black Chrome Spikes 57mm | 7.94 /8 | 7.56 /8 | 7.14 /8 |
SP0M8K50 | M8 Knurled Blacked Spikes 50mm | 7.72 /8 | 7.35 /8 | 6.95 /8 |
SPOM8BZ40 | M8 Knurled Spike BZP finish. | 7.49 /8 | 7.13 /8 | 6.74 /8 |
SP0M8K45 | M8 Knurled Blacked Spikes 45mm, | 6.43 /8 | 6.13 /8 | 5.79 /8 |
SP0M8K40 | M8 Knurled Blacked Spikes 40mm | 7.38 /8 | 7.03 /8 | 6.64 /8 |
SP0M8K35 | M8 Knurled Blacked Spikes 35mm | 7.16 /8 | 6.82 /8 | 6.44 /8 |
SPBM8N35 | M8 Ball & Point Spike Nickel Plated 35mm + Locknut | 12.25 /8 | 11.67 /8 | 11.03 /8 |
M6 and M8 Spike Kits

Order Code | Description | 1+ | 6+ | 11+ |
---|---|---|---|---|
M6 Spike Kits. Kits include Spike + Insert + Locknut |
||||
SPKM6K48 | M6 Plain Blacked Spikes 48mm + Knock-In | 10.70 /8 | 10.19 /8 | 9.63 /8 |
SPKM6S40 | M6 Knurled Blacked Spikes 40mm + Screw-In | 10.77 /8 | 10.23 /8 | 9.69 /8 |
SPKM6K40 | M6 Knurled Blacked Spikes 40mm + Knock-In | 10.56 /8 | 10.06 /8 | 9.51 /8 |
SPKM6K32 | M6 Knurled Blacked Spikes 32mm + Knock-In | 10.83 /8 | 10.31 /8 | 9.74 /8 |
Order Code | Description | 1+ | 6+ | 11+ |
---|---|---|---|---|
M8 Spike Kits. Kits include Spike + Locknut + Insert |
||||
SPKM8K57 | M8 Plain Black Chrome Spikes 57mm + Knock-In | 13.23 /8 | 12.60 /8 | 11.91 /8 |
SPKM8S50 | M8 Knurled Blacked Spikes 50mm + Screw-In | 13.00 /8 | 12.39 /8 | 11.71 /8 |
SPKM8K50 | M8 Knurled Blacked Spikes 50mm + Knock-In | 13.95 /8 | 13.29 /8 | 12.56 /8 |
SPKM8S40 | M8 Knurled Blacked Spikes 40mm + Screw-In | 12.69 /8 | 12.09 /8 | 11.42 /8 |
SPKM8K40 | M8 Knurled Blacked Spikes 40mm + Knock-In | 12.95 /8 | 12.33 /8 | 11.65 /8 |
SPKM8K35 | M8 Knurled Blacked Spikes 35mm + Knock-In | 12.74 /8 | 12.13 /8 | 11.46 /8 |
M10 Spike Kits

Order Code | Description | 1+ | 6+ | 11+ |
---|---|---|---|---|
M10 Spike Kits. Kits include, Spike + Tee Nut + Locknut **OR** Parts also Sold Separately |
||||
SPKM10K44 | M10 Spike KIT: Plain Blacked Spikes 44mm + Tee Nut + Stainless Locknut | 15.71 /8 | 14.96 /8 | **** |
SP0M10P44 | M10 Plain Blacked Spikes 44mm | 8.60 /8 | 8.19 /8 | **** |
NUTSSM10 | M10 Locknut, Half Nut, Stainless Steel. | 4.50 /8 | 4.29 /8 | **** |
TNM10 | M10 Tee Nut, 4 prong Zinc-Plated, M10*13mm | 3.43 /8 | 3.27 /8 | **** |
Wood Inserts for Spikes, M6 & M8 sizes

Order Code | Description | 1+ | 6+ | 11+ |
---|---|---|---|---|
M6 Inserts: Flanged: OL= Overall Length in mm |
||||
INSM60K | M6 Knock-In for Spikes & Drivers, OL=10.5mm | 3.70 /8 | 3.52 /8 | 3.33 /8 |
INSM61K | M6 Knock-In for Spikes & Drivers, OL=12.5mm | 3.77 /8 | 3.59 /8 | 3.39 /8 |
INSM62S | M6 Screw-In for Spikes & Drivers, OL=13.0mm | 3.98 /8 | 3.79 /8 | 3.58 /8 |
Order Code | Description | 1+ | 6+ | 11+ |
---|---|---|---|---|
M8 Inserts: Flanged: OL= Overall Length in mm |
||||
INSM80K | M8 Knock-In for Spikes & Drivers, OL=15.5mm | 5.34 /8 | 5.09 /8 | 4.81 /8 |
INSM80S | M8 Screw-In for Spikes & Drivers, OL=13.0mm | 5.09 /8 | 4.85 /8 | 4.58 /8 |
Tee Nuts for Spikes M6, M8, M10.

Order Code | Description | 1+ | 6+ | 11+ |
---|---|---|---|---|
TNM6 | M6 Tee Nut, 4 Prong, Steel, Self Colour, (unplated) | 2.06 /8 | 1.96 /8 | 1.85 /8 |
TNM8 | M8 Tee Nut, 4 Prong, Zinc-plated, M8*11mm | 2.33 /8 | 2.22 /8 | 2.10 /8 |
TNM10 | M10 Tee Nut, 4 prong Zinc-Plated, M10*13mm | 3.43 /8 | 3.27 /8 | **** |
Spike Locknuts, M6, M8

Order Code | Description | 1+ | 6+ | 11+ |
---|---|---|---|---|
M6 Loudspeaker Spike Locknuts: Steel: Chemi-Blacked & Nickel Plated |
||||
NUTBLKM6 | M6 Locknut, Full Nut, Blacked. Packs of 8 | 0.77 /8 | 0.73 /8 | 0.69 /8 |
NUTBLKM61 | M6 Locknut, Half Nut, Blacked. Packs of 8 | 0.77 /8 | 0.73 /8 | 0.69 /8 |
NUTNICM62 | M6 Locknut, Half Nut, Nickel Plated. Packs of 8 | 0.77 /8 | 0.73 /8 | 0.69 /8 |
Order Code | Description | 1+ | 6+ | 11+ |
---|---|---|---|---|
M8 Loudspeaker Spike Locknuts: Steel: Chemi-Blacked or BZP Finish |
||||
NUTBLKM8 | M8 Locknut, Full Nut, Blacked. Packs of 8 | 0.89 /8 | 0.85 /8 | 0.80 /8 |
NUTBLKM81 | M8 Locknut, Half Nut, Blacked. Packs of 8 | 0.89 /8 | 0.85 /8 | 0.80 /8 |
NUTBZPM8 | M8 Locknut, Half Nut, BZP Finish. Packs of 8 | 0.84 /8 | 0.80 /8 | 0.76 /8 |
Stainless Locknuts

Order Code | Description | 1+ | 6+ | 11+ |
---|---|---|---|---|
Locknuts: Stainless Steel for Loudspeaker spikes |
||||
NUTSSM6 | M6 Locknut, Half Nut, Stainless Steel. Packs of 8 | 1.97 /8 | 1.88 /8 | **** |
NUTSSM8 | M8 Locknut, Half Nut, Stainless Steel. Packs of 8 | 3.95 /8 | 3.76 /8 | **** |
NUTSSM10 | M10 Locknut, Half Nut, Stainless Steel. | 4.50 /8 | 4.29 /8 | **** |
Loudspeaker Spike Shoes for Floor & Surface Protection.
SPIKE SHOES / PROTECTORS are available to protect sensitive surfaces such as wooden floors or shelves. A choice of 13mm diameter steel shoes or 24mm Acetal shoes in Black, Red or Blue are available. The Acetal shoes have been tested to 7Kgms per shoe and so we recommend a total mass loading of 20Kgms for four pieces. These items are also available with self-adhesive EPDM tape for slippery surfaces. Tape is supplied in 25mm wide strip for custom cutting. The shoes are suitable to fit all sizes of M6, M8 or M10 spikes.
Loudspeaker Spike Shoes, 13mm Diameter, Steel,

Order Code | Description | 1+ | 6+ | 11+ |
---|---|---|---|---|
Loudspeaker Spike Shoes. Protect surfaces from spike damage |
||||
SPSHOE13 | Spike Shoes,13mm. Suits M6, M8 or M10 Spikes | 4.61 /8 | 4.39 /8 | **** |
Loudspeaker Spike Shoes, 24mm Diameter, Acetal.

Order Code | Description | 1+ | 6+ | 11+ |
---|---|---|---|---|
Acetal Loudspeaker Spike Shoes, Diameter 24mm, Thickness 6mm |
||||
SPSHOEBK | Loudspeaker Spike Protectors, Acetal, Black | 8.35 /4 | 7.95 /4 | **** |
SPSHOERD | Loudspeaker Spike Protectors, Acetal, Red | 8.35 /4 | 7.95 /4 | **** |
SPSHOEBL | Loudspeaker Spike Protectors, Acetal, Blue | 8.35 /4 | 7.95 /4 | **** |
SPSHOETP | EPDM Tape Strip, 25mm * 13cm | 0.53 /1 | 0.50 /1 | **** |