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
Electro Zinc Plated Carbon Steel (ZI) parts are suitable for installation in ductile panels with a maximum recommended hardness of 80 HRB. 300 Series Stainless Steel (A2) parts are suitable for installation in ductile panels with a maximum recommended hardness of 70 HRB.
Part Number Examples
Part number is made up as follows: (Type)-(Thread)-(Length)-(Material/Finish code) For example: NFHL-M3-10-ZI (Reduced Head Stud-M3-10mm long-electro zinc plated carbon steel) NFHL-M4-12-A2 (Reduced Head Stud-M4-12mm long-stainless steel) Use part designation NFHLD to specify a dog-point thread lead-in (special order).
RoHS REACH COMPLIANT
Info
Self-Clinching Reduced Head Studs provide strong low displacement captivated male threads in thin panels and are suitable for installation closer to the edge of the panel than normal Flush Head Studs. Utilising a special proven castellated clinch feature, this fastener has good torque-out, pull-through and push-out characteristics whilst providing a flush finish on the underside of the panel, meaning that minimal surface finishing is required after installation. Like all self clinching fasteners they are installed using a parallel squeezing action, so require access to both sides of the panel.   Reduced Head Studs are available in a range of thread sizes and lengths, manufactured from electro zinc plated steel, 300 series stainless steel and are suitable for installation in ductile steel and aluminium panels with a recommended maximum hardness of 80 HRB for steel parts and 70 HRB for 300 series stainless steel parts. Reduced Head Studs can also be supplied with a dog-point thread lead-in to aid component assembly.
Dimensional
Thread size
D ±0.40
Maximum mating hole
H Max.
Min. sheet thickness
Min CL to edge of panel
2.10
2.80
M2.5 x 0.45
Hole size +0.08 -0.0
2.90
3.15
1.00
2.50
2.10
3.30
M3 x 0.5
3.40
3.65
1.00
3.00
2.30
3.80
M3.5 x 0.6
3.90
4.15
1.00
3.50
2.40
4.30
M4 x 0.7
4.40
4.65
1.00
4.00
2.70
5.60
M5 x 0.8
5.40
2.70
1.00
5.00
Thread size
Lengths (L) ±0.40
M2.5 x 0.45
M3 x 0.5
M3.5 x 0.6
M4 x 0.7
M5 x 0.8
6
6
6
6
-
8
8
8
8
8
10
10
10
10
10
12
12
12
12
12
15
15
15
15
15
18
18
18
18
18
-
20
20
20
20
-
25
25
25
25
-
-
30
30
30
-
-
-
35
35
Self Clinching Reduced Flush Head Studs
Type NFHL
SELF-CLINCHING REDUCED HEAD STUDS
self-clinching reduced head studs