Speaker Driver Fittings, Wood Inserts / Fixings
* Various Wood Inserts
Illustrated are examples of wood inserts often used to secure speaker parts and fittings to loudspeaker cabinets. The inserts are available in a range of metric sizes. The most common for speaker building being M4 to M10 sizes. The types can be further defined as Knock-in varieties and Screw-in's.
Each component design has its own advantages and dis-advantages. Tee Nuts have moderate self-clinching / pull-out
but have great resistance to twist.
Barbed Knock-in's have reasonable pull-out resistance but low twist specification. Screw-in varieties have very high
pull-out resistance but very low reverse twist i.e. they unscrew easily.
Available as shouldered or non shouldered, the shouldered Knock-in varieties may be used to provide a threaded insert from the cabinet inner face although accurate alignment is required to achieve a satisfactory fitting on the reverse side. Similarly, Tee Nuts can also be used in this manner. For further information refer to our article on How to fit Spikes
|TNM4||M4 Tee Nut, 4 Prong, Steel, self colour||1.66 /8||1.58 /8|
|TNM5||M5 Tee Nut, 4 Prong, Steel, self colour||1.81 /8||1.72 /8|
|TNM6||M6 Tee Nut, 4 Prong, Steel, self colour||2.06 /8||1.96 /8|
|TNM8||M8 Tee Nut, 4 Prong, Steel, self colour||2.33 /8||2.22 /8|
Wood Inserts: Flanged: OL=Overall Length mm
|INSM40K||M4 Knock-In for Driver Fixings, OL=9.5mm||3.32 /8||3.16 /8|
|INSM50K||M5 Knock-In for Driver Fixings, OL=12.0mm||3.43 /8||3.27 /8|
|INSM50S||M5 Screw-In Inserts, Flanged, OL=13.0mm||3.44 /8||3.28 /8|
|INSM60K||M6 Knock-In for Spikes & Drivers, OL=10.5mm||3.70 /8||3.52 /8|
|INSM80K||M8 Knock-In for Spikes & Drivers, OL=15.5mm||5.34 /8||5.09 /8|
|XPANPLM4||M4 Knurled plain Xpansert inserts||2.58 /8||2.46 /8|
|XPANSHM4||M4 Knurled Flanged Xpansert inserts||2.71 /8||2.58 /8|
* Cap Head Woodscrews
Blacked Cap Head Screws
If you want to give your front mounted loudspeakers a more professional finished look and you don't want to use basic screws then here is the answer Cap Head Screws. Sold in sizes of M4 or M5 thread, the M4 size will pass through most tweeter mountings whilst the M5 size can do the heavy lifting for mid-bass and bass units. Surfaces are finished in a cosmetic chemi-black. Note, these items require Hex Key drivers for insertion and like most screw threaded devices into MDF, a pilot hole should be drilled first.
Cap Head Woodscrews
|CWSM416||Hex Headed Woodscrews, M4* 16mm, Blacked||2.26 /8||2.15 /8|
|CWSM425||Hex Headed Woodscrews, M4* 25mm, Blacked||2.58 /8||2.46 /8|
|CWSM530||Hex Headed Woodscrews, M5* 30mm, Blacked||2.68 /8||2.55 /8|
* HSS Drills
Drills for Wood Inserts
These drills have been selected to assist the fitting of various wood inserts and screw threaded components. Depending upon the hardness of the material being used, for example, oak is harder than MDF, then the harder the material, the larger the pilot hole should be. In other words, no one size will fit all. The recommended sizes are best estimates only.
HSS Drills for Tee Nuts
|DRL520RO||5.20mm Suitable for M4 Tee Nuts||1.81 /1||****|
|DRL650RO||6.50mm Suitable for M5 Tee Nuts||2.08 /1||****|
|DRL730RO||7.30mm Suitable for M6 Tee Nuts||4.04 /1||****|
|DRL960RO||9.60mm Suitable for M8 Tee Nuts||6.87 /1||****|
HSS Drills for Wood Inserts (Knock-in) M6
|DRL860RO||8.60mm Suitable for M6 (Knock-in)||5.47 /1||****|
|DRL870RO||8.70mm Suitable for M6 (Knock-in)||5.64 /1||****|
|DRL880RO||8.80mm Suitable for M6 (Knock-in)||5.67 /1||****|
|DRL890RO||8.90mm Suitable for M6 (Knock-in)||6.00 /1||****|
|DRL900RO||9.00mm Suitable for M6 (Knock-in)||4.59 /1||****|
HSS Drills for Wood Inserts (Knock-in) M8
|DRL960RO||9.60mm Suitable for M8 (Knock-in)||6.87 /1||****|
|DRL980DIY||9.80mm Suitable for M8 (Knock-in) DIY / prototype use||5.44 /1||****|
|DRL980PRO||9.80mm Suitable for M8 (Knock-in) industrial use||7.99 /1||****|
|DRL100RO||10.00mm Suitable for M8 (Knock-in)||4.71 /1||****|
* Allen Keys
Allen Keys for Screw-in Inserts
Screw-in inserts require the use of Hexagonal Ended drivers to achieve the best installation experience. Many Screwdriver sets have these types of ends in their selection of bits. However, if you are not that lucky then the Allen keys as listed below should cover most applications, as needed.
|HSS Drills for Wood Inserts (Screw-in) M6|
|DRL870RO||8.70mm Suitable for M6 (Screw-in)||5.64 /1||****|
|DRL880RO||8.80mm Suitable for M6 (Screw-in)||5.67 /1||****|
|DRL890RO||8.90mm Suitable for M6 (Screw-in)||6.00 /1||****|
|DRL900RO||9.0mm Suitable for M6 (Screw-in)||4.59 /1||****|
|Long Arm ALLEN Keys for (Screw-in) Inserts|
|HXKY40AF||Suitable for use with M4 (screw-in) Inserts||0.98 /1||****|
|HXKY50AF||Suitable for use with M5 (screw-in) Inserts||1.72 /1||****|
|HXKY60AF||Suitable for use with M6 (screw-in) Inserts||2.58 /1||****|
|HXKY80AF||Suitable for use with M8 (screw-in) Inserts||4.98 /1||****|
|HSS Drills for Grille Fixings|
|DRL100RO||10.00mm Suitable for fixing Small grille fasteners||4.71 /1||****|
* M4 Spacers
M4 Nickel Spacers
Male / Female nickel plated M4 brass spacers. External 6mm thread on 8mm post. Internal thread depth 6.5mm. Body length 10mm.
|SPCR01||Nickel plated M4 Male/Female threaded spacers||5.81 /10||5.52 /10|
See BUY IT for Further Information. All Prices include VAT @ 20%.