64.8
64.5
64.2
63.8
63.5
63.1
62.7
62.4
62
61.6
61.2
60.7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
A Scale
0 Kg
Diamond
Brale
B Scale
100 Kg
1/16”
Ball
C Scale
150 Kg
Diamond
Brale
D Scale
150 Kg
Diamond
Brale
ROCKWELL
BRINELL
VICKERS
KNOOP
3000 Kg
10mm
Ball
-
≥ 500g
load
Approx.
tensile
strength
of steel
(PSI)
105
-
104
-
103
-
102
-
100
99.5
-
98.1
-
96.7
-
95
-
93.4
-
91.5
-
89.5
-
87.1
-
85
-
81.7
-
78.7
-
75
-
71.2
-
66.7
-
62.3
-
56.2
52
48
41
29.2
28.5
27.8
27.1
26.4
25.6
24.8
24
23.1
22.2
21.3
20.3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
47.1
46.5
46
45.3
44.9
44.3
43.7
43.1
42.2
41.7
41.1
40.3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
280
275
270
265
261
256
252
247
243
238
233
228
-
219
-
209
-
200
-
190
-
181
-
171
-
162
-
152
-
143
-
133
-
124
-
114
-
105
-
95
90
86
81
295
290
285
280
275
270
265
260
255
250
245
240
235
230
225
220
215
210
205
200
195
190
185
180
175
170
165
160
155
150
145
140
135
130
125
120
115
110
105
100
95
90
85
305
300
296
291
286
282
277
272
267
262
258
253
-
243
-
234
-
226
-
216
-
206
-
196
-
185
-
175
-
164
-
154
-
143
-
133
-
123
-
112
107
102
97
-
-
133,000
-
129,000
-
-
122,000
-
-
115,000
-
-
105,000
-
100,000
-
98,000
-
-
90,000
-
-
83,000
-
79,000
-
-
-
71,000
-
-
-
63,000
-
-
56,000
-
-
-
-
-
-
Self-Clinching Fastener Maximum Panel Hardness
Fastener Material
Max. Panel Hardness
Aluminium
Unhardened Steel
300 Stainless Steel
Hardened Steel
Hardened Stainless Steel
HRB 50
HRB 60
HRB 70
HRB 80 - 85*
HRB 88 - 92*
* Dependent on fastener type
Typical Panel Material Hardnesses
Panel Material
Panel Hardness
5052-H32 Aluminium
Cold-rolled Steel
6061-T6 Aluminium
Annealed 304 Stainless
Steel
High Strength Low Alloy
Steel (HSLA)
HRB 15 - 30
HRB 40 - 75
HRB 50 - 55
HRB 80+
HRB 80-85 Properties vary
so testing is recommended
NORTHERN PRECISION LTD
Specialist Fasteners
for Sheet Metal
+44 (0) 1302 836010
+44 (0) 1302 831555
Tel:
Fax:
sales@npfasteners.com
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 approved.
Regulatory
RoHS|WEEE Compliance
REACH Compliance
Conflict Minerals Policy
Environmental Policy
Opening Hours
Mon - Fri 08:00 - 17:00
Registered in England & Wales
Company number 3275391
V.A.T Registration number
GB 684 1384 17
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