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
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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 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
Self-Clinching Fasteners Broaching Fasteners Arnold & Shinjo Fasteners Rivet Bushes Rivet Nuts Weld Fasteners Cage Nuts Blind Rivets Inserts for Plastics Inserts for Stone, Solid  Materials, Composites & Sandwich Panels Crown-Nuts Fast-Con Installation Equipment Turned & Cold Formed special parts made to order Bespoke fastener design & development Fastener & Application testing Technical support ISO 9001 RoHS|WEEE Compliance REACH Compliance Conflict minerals Environmental Policy  OUR PRODUCT RANGE  SERVICES & SUPPORT  SELF-CLINCHING Clinch Nuts Flush Nuts Blind Nuts Miniature Nuts Nyloc Nuts Locking Nuts Floating Nuts Flush Head Studs Flush Head Studs for Stainless Steel Reduced Flush Head Studs Thin Panel Non-Flush Studs High Strength Studs Thin Panel High Strength Studs Flush Head Pins Flush Head Tapered Pins Concealed Head Studs Through & Blind Standoffs Grounding Standoffs Thin Panel Standoffs Quick Release Standoffs Keylock Standoffs Concealed Head Standoffs Flush Panel Screw Assembly Panel Fasteners Phillips Head Panel Fasteners Low-Profile Panel Fasteners Plunger Assembly  Self-Clinching fastenerDoís and Doníts  Self-Clinching fastener problem solving guides  Self-Clinch in harder panels Northern Precision Ltd YouTube Channel
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.