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 836012 sales@npfasteners.com
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NORTHERN PRECISION LTD
Accreditations Northern Precision Ltd operate a quality management system in accordance with ISO 9001:2008. The ISO 9001:2008 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 836012
Tel:
Fax:
sales@npfasteners.com
Quality
Service
Reliability
Northern Precision Ltd YouTube Channel
Installation Method
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. 
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)
PROFILED PUNCH ANVIL PUNCH OR HAMMER ANVIL ANVIL PROFILED PUNCH PUNCH OR HAMMER ANVIL
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: SHBK-5M3-14-GZ (Round Rivet Bush Standoff Knurled Spigot-5mm Long-M3- 14swg sheet thickness-electro zinc plated steel) SHBK-18M5-20-GS (Round Rivet Bush Standoff Knurled Spigot-18mm Long- M5-20swg 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 knurled spigot, this style of rivet bush offers good torque to turn resistance while maintaining good 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 Knurled Spigot
ROUND RIVET BUSH STANDOFF KNURLED SPIGOT
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
1.5
1.5
2.5
2.5
4.3
7.4
8.0
1.9
1.9
2.9
2.9
4.9
8.5
10.2
2.1
2.1
3.3
3.3
5.4
10.1
14.0
2.2
2.2
4.1
4.1
5.9
12.2
15.2
2.4
2.4
4.5
4.5
6.5
12.8
16.0
2.6
2.6
5.1
5.1
7.0
13.8
16.9
950
950
1000
1000
1100
1350
1450
1225
1225
1300
1300
1500
1850
2000
1350
1350
1450
1450
1700
2100
3300
1500
1500
1600
1600
2000
3000
4500
1625
1625
1800
1800
2100
3225
5400
1700
1700
1900
1900
2300
3400
5550
round rivet bush standoff knurled spigot