All of our products are manufactured for reliability and consistently high quality and are RoHS compliant as standard.
Our bright zinc based plating's are all high quality trivalent clear chromate based finishes.

OptNut® Thin Sheet
Blind Rivet Nut
The high performance patented OptiNut® is a new type of rivet nut designed to streamline rivet nut usage and at the same time solve most of the age-old problems associated with this sort of fixing.
Primarily the OptiNut® offers a much wider grip than conventional Rivet nuts, for instance. M3 will cover 0.5 - 3.0mm the M4 0.5-4.0mm, M8 0.5-8.0 and so on.
One nut will cover 2 grips in the smaller sizes and up to 4 grips in larger sizes so reducing inventory items and the danger of placing the wrong nut in the work piece.
OptiNut® rivet nuts are produced in 23B2 material and therefore offer up to 40% better thread performance than standard CB4 FF. This material is most suitable when used with 8.8 Screws.
OptiNut® rivet nuts can be used with conventional tooling but tool adjustment will still be necessary to obtain the correct setting.
OptiNut® rivet nuts can also be produced with a grip range to suit your application i.e. M8 - 3.5-11.0mm.
OptiNut® rivet nuts produce a bulge with a much larger diameter than conventional rivet nuts and with a controlled upset point can safely be used in softer materials, composites or sandwich sections.
OptiNut® rivet nuts can be produced in first grip, large flange and small C'sk Head styles in steel with a RoHS complaint Zinc / Cr3 based plating (giving 96 hours salt spray resistance) as standard but can be produced in all head styles, body shapes and materials to suit your application.
OptiNut® custom can be offered in specific or conventional grips were the bulge control system will offer manageable mechanical control for upset point, or providing lower upset load requirement for minimum heat treated parts which withstand the maximum torque requirement for 12.9 bolts.
Applications include :-
Automotive, Furniture, White Goods, Restoration, Electronics, Sheet metal Fabrication.


OptiNut is a registered trademark of Northern Precision Ltd
OptiNut is a new development in rivet nut technology. M3, M4 & M5 versions will be available soon.
| Thread |
Grip Code / |
Hole Size - 0.0 |
D |
d | S |
L ± 0.3 |
| M6 x 1.0 |
45 (0.5 - 4.5) |
9.0 |
12.0 |
9.0 |
1.5 |
18.0 19.5 |
| M8 x 1.25 |
60 (0.5 - 6.0) 80 (0.5 - 8.0) 110 (3.5 - 11.0) |
11.0 |
13.0 |
11.0 |
1.5 |
19.0 22.0 25.0 |
| M10 x 1.5 |
70 (0.8 - 7.0) |
13.0 |
19.0 |
13.0 |
2.0 |
26.0 |
Other grip ranges available - call for details.
Also available in splined body style for extra grip in soft materials (Type Opti-TSK)
Materials |
Finishes |
Medium Tensile Steel Aluminium (AL) - Special Order Only Brass (BR) - Special Order Only |
Bright Zinc with a Heavy Trivalent Clear Passivate (ZI96) (Gives 96 hours salt spray resistance) Other finishes available to order |
Part Number Example |
|
Type | Thread | Grip Range | Finish |
|