NP
Contact us You can contact us using any of the methods below. Unit 3 Durham Lane Armthorpe Doncaster South Yorkshire DN3 3FE England +44 (0)1302 836010 +44 (0)1302 831555 sales@npfasteners.com
All rights reserved © Northern Precision Ltd.
NORTHERN PRECISION LTD
Accreditations Northern Precision Ltd operate a quality management system in accordance with ISO 9001. The ISO 9001 standard is recognised worldwide and you can be assured of the benefits of working with a certified company knowing that our management systems are constantly assessed and improved.
Registered in England & Wales Company number 3275391
V.A.T Registration number GB 684 1384 17
NP
NORTHERN PRECISION LTD
Specialist Fasteners for Sheet Metal
+44 (0) 1302 836010
+44 (0) 1302 831555
Tel:
Fax:
sales@npfasteners.com
Quality
Service
Reliability
Northern Precision Ltd YouTube Channel
Installation Method
PROFILED PUNCH ANVIL PUNCH OR HAMMER ANVIL ANVIL PROFILED PUNCH PUNCH OR HAMMER ANVIL
Punch or drill specified hole size. Ensure that you are using the correct gauge fastener for the panel thickness used. Place part in anvil and locate panel hole over spigot.
Using a profiled punch, ensuring panel is held perpendicular to the punch and anvil face, apply a parallel squeezing force to form the correct spigot profile.
Alternatively, a domed anvil or a ball bearing and hammer can be used to form the spigot profile, however this will not give optimum performance.
For optimum performance, installing with a profiled punch is highly recommended. A flat punch can also be used but will result in reduced push-out performance. 
Thread size
Torque to Turn (Nm)
Pull-Out (N)
20swg
18swg
16swg
14swg
12swg
10swg
20swg
18swg
16swg
14swg
12swg
10swg
M2.5
M3
M3.5
M4
M5
M6
M8
1.9
1.9
3.0
3.0
4.5
7.6
8.5
2.0
2.0
3.2
3.2
4.8
8.5
10.4
2.1
2.1
3.7
3.7
5.5
10.3
14.2
2.3
2.3
4.2
4.2
6.0
12.4
15.4
2.5
2.5
4.7
4.7
6.8
13.5
16.5
2.7
2.7
5.2
5.2
7.2
14.5
17.0
1000
1000
1025
1025
1100
1350
1500
1250
1250
1400
1400
1575
1850
2000
1400
1400
1650
1650
1875
2100
3500
1550
1550
1700
1700
1975
3000
4700
1650
1650
2000
2000
2250
3225
5450
1750
1750
2150
2150
2400
3400
5550
Performance
All performance figures are averages obtained over a range of installations for steel parts in mild steel panels and should be used for guidance only. Fastener material, panel material, hole preparation, installation tooling and method can affect part performance. We always recommend that you carry out your own tests in the actual application. Please call our sales team and we will be happy to provide you with samples as well as offering technical assistance.
25 - 6swg (0.5 - 5.0mm)
Material & Finish
Unplated Steel (GX) Electro Zinc Plated Steel (GZ) 303 Stainless Steel (GS) 316 Stainless Steel (A4) Aluminium (GA) Brass (GB)
Part Number Examples
Part number is made up as follows: (Type)-(Length)-(Thread code)-(Panel thickness)-(Material/Finish code) For example: SHB-8M3-10-GZ (Round Rivet Bush Standoff Serrated Shoulder-8mm Long- M3-10swg sheet thickness-electro zinc plated steel) SHB-10M4-20-GS (Round Rivet Bush Standoff Serrated Shoulder-10mm Long- M4-20swg sheet thickness-stainless steel)
RoHS REACH COMPLIANT
Dimensional
Thread Size
M2.5 x 0.45
M3 x 0.5
M3.5 x 0.6
M4 x 0.7
M5 x 0.8
M6 x 1.0
M8 x 1.25
M10 x 1.5
M12 x 1.75
To suit panel thickness
25 - 6swg (0.5 - 5.0mm)
25 - 6swg (0.5 - 5.0mm)
25 - 6swg (0.5 - 5.0mm)
25 - 6swg (0.5 - 5.0mm)
25 - 6swg (0.5 - 5.0mm)
25 - 6swg (0.5 - 5.0mm)
25 - 6swg (0.5 - 5.0mm)
25 - 6swg (0.5 - 5.0mm)
25 - 6swg (0.5 - 5.0mm)
Hole Size +0.05 -0.0
5.54
5.54
6.73
6.73
7.92
9.52
12.70
15.87
19.05
D ±0.15
7.92
7.92
9.52
9.52
11.10
12.70
15.87
19.05
25.40
C +0.0 -0.13
5.54
5.54
6.73
6.73
7.92
9.52
12.70
15.87
19.05
L ±0.13
Made to order
Made to order
Made to order
Made to order
Made to order
Made to order
Made to order
Made to order
Made to order
Info
Round Rivet Bush Standoffs provide strong reusable captivated threads in a spacer format for thin panels.   They can be installed into panels as thin as 0.5mm and do not suffer from the maximum hardness or centreline to edge limitations of self-clinching nuts so are suitable for installation into panels of any hardness such as hard stainless steels or in close to edge applications. Featuring a radially serrated shoulder, this style of rivet bush offers excellent torque to turn resistance while maximising spigot strength to resist pull-out. Manufactured to suit a specific panel thickness in a specified length, we can also manufacture parts with custom dimensions to suit your particular application.   Round Rivet Bush Standoffs are manufactured with metric threads in steel, electro zinc plated steel, A2 and 316 stainless steel, aluminium and brass. We can also supply Unified, BA, BSW and BSP thread sizes as required. Round Rivet Bush Standoffs are made to order and are subject to minimum order quantities although we do carry stock of some commonly used thread/panel thickness/length combinations. Ideally Rivet Bush Standoffs should be installed using a press with a suitability profiled punch by applying a parallel squeezing force, however they can be installed using a hammer and ball bearing to form the spigot profile.
Round Rivet Bush Standoffs Serrated Shoulder
ROUND RIVET BUSH STANDOFF SERRATED SHOULDER
round rivet bush standoff