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NORTHERN PRECISION LIMITED
Specialist Fasteners  
+44 (0) 1302 836010 sales@npfasteners.com
Northern Precision Ltd is an ISO9001 accredited Company. Northern Precision Ltd is an ISO9001 accredited Company.
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 sales@npfasteners.com
Northern Precision Ltd is an ISO9001 accredited Company. Northern Precision Ltd is an ISO9001 accredited Company.
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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 approved.
Northern Precision Ltd is an ISO9001 accredited Company.
Regulatory RoHS|WEEE Compliance REACH Compliance Conflict Minerals Policy Environmental Policy Opening Hours Mon - Thu 08:00 - 17:00 Fridays 08:00 - 16:30
Northern Precision Ltd is an ISO9001 accredited Company. Northern Precision Ltd is an ISO9001 accredited Company.
Registered in England & Wales Company number 3275391
V.A.T Registration number GB 684 1384 17
Northern Precision Ltd is an ISO9001 accredited Company. Northern Precision Ltd is an ISO9001 accredited Company. Northern Precision Ltd is an ISO9001 accredited Company.
Material & Finish
Flush Mounted Panel Screw 300 Series Stainless Steel (A2). Self-Clinching Flush Mounted Retainer 300 Series Stainless Steel (A2) parts are suitable for installation in ductile panels with a maximum recommended hardness of 70 HRB. Self-Clinching Receptacle Nut Electro Zinc plated Carbon Steel (ZI) parts are suitable for installation in ductile panels with a maximum recommended hardness of 80 HRB.
Part Number Examples
Flush Mounted Panel Screw Part number is made up as follows: (Type)-(Thread)-(Screw Length Code)-(Material/Finish) For example: NP10-M3-40-A2 (Flush Mounted Panel Screw-M3-Screw Length Code 40- stainless steel) Self-Clinching Flush Mounted Retainer Part number is made up as follows: (Type)-(Thread)-(Material/Finish) For example: NR-M4-A2 (Self Clinching Flush Mounted Retainer-M4-stainless steel) Self-Clinching Receptacle Nut Part number is made up as follows: (Type)-(Thread)-(Minimum Panel)-(Material/Finish) For example: NRN-M5-1-ZI (Self Clinching Receptacle Nut-M5-1mm minimum panel thickness-electro-zinc plated steel)
RoHS REACH COMPLIANT
Info
Self-Clinching Panel Screw Assemblies utilise a self-clinching Retainer (NR) to allow a Panel Screw (NP10) to be flush mounted in thin sheet metal panels, while remaining captive in the retainer when disengaged from the mating component. A self-clinching Receptacle Nut (NRN) is used in the mating component. Like all self-clinching fasteners, the retainer and receptacle components are installed using a parallel squeezing action, so require access to both sides of the panel.   Panel Screws are manufactured from 300 series stainless steel. Self-clinching Retainers are manufactured from 300 series stainless steel and are suitable for installation in ductile panels with a recommended maximum hardness of 70 HRB. Self-Clinching Receptacle Nuts are manufactured from electro-zinc plated carbon steel and are suitable for installation in ductile panels with a recommended maximum hardness of 80 HRB.
Dimensional
3.30
B Nom.
7.11
C Ref.
10.16
D ±0.25
4.06
A Ref.
1.00
F Min.
3.18
E ±0.25
Flush Mounted Captive Panel Screw Assembly
NP10 Flush Mounted Captive Panel Screw
Thread Size
M5 x 0.8
M4 x 0.7
M3 x 0.5
T Nom.
3.30
3.30
3.30
H +0.05 -0.15
1.91
1.91
1.91
Screw Length Code
40
40
40
E Nom.
7.10
6.30
4.70
8.38
L ±0.25
8.38
8.38
NR Flush Mounted Captive Retainer
Thread Size
M5 x 0.8
M4 x 0.7
M3 x 0.5
H Nom.
1.91
1.91
1.91
Min. Panel
1.27(1) 3.18(2)
1.27(1) 3.18(2)
1.27(1) 3.18(2)
A Max.
3.18
3.18
3.18
9.14
Min. CL to edge
8.64
7.78
Hole Size +0.08
9.53
8.74
7.14
E Nom.
10.41
9.53
7.87
C Max.
9.50
8.72
7.12
B Nom.
7.37
6.48
4.75
NRN Flush Mounted Captive Receptacle Nut
Thread Size
M5 x 0.8
M4 x 0.7
M3 x 0.5
H Nom.
5.41
4.75
3.20
A Max.
0.97
0.97
0.97
7.87
Min. CL to edge
7.11
5.59
Hole Size +0.08
7.04
6.35
4.75
F ±0.25
3.30
3.30
3.30
E Nom.
9.53
8.64
7.11
C Max.
7.01
6.33
4.73
Min. Panel
1.00
1.00
1.00
T ±0.13
6.00
6.00
6.00
Self Clinching Panel Screw Assembly Components
Types NP10 | NR | NRN
SELF-CLINCHING PANEL SCREW ASSEMBLY
self-clinching panel screws Flush Mounted Panel Screw Self Clinching Flush Mounted Captive Retainer Self Clinching Receptacle Nut
(1) Absolute minimum panel thickness. (2) Minimum panel thickness for flush finish.