NBI Na Bob Precision Metal Industry Limited
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As a manufacturer of precision stamped metal parts, we also specialise in the manufacture of metal snap dome contacts for use with electric circuitboards, most commonly used today in mobile telephone handsets. With over 17 years experience in this field we have built a large catalogue of over 200 readily available domes which require no need for any tooling, and are available at very short notice.

Our domes are currently being used all over the world, in many applications ranging from mobile phones, personal electronic apparatus to disposable cameras.

Circle type
Triangle type
Cross type
Square type
Oblong type

Legged

Custom order

P/N key
letters after
prefix : -

T : triangular
S : square
C : circular
B : oblong
L : legged

example.

5A-T
diameter 5mm - triangular

 
NEW P/N
HEIGHT
TENSION
THICKNESS
LEG DIAMETER
4B-C
0.20+0.03
180+30g
0.06mm
  
4C-C
0.22+0.03
220+30g
0.06mm
  
4D-C
0.24+0.03
260+30g
0.06mm
  
4E-C
0.18+0.03
150+30g
0.06mm
  
4F-C 0.21+0.03 170+20g 0.05mm  
4H-C 0.20+0.03 150+25g 0.05mm  
4I-C 0.21+0.03 180+25g 0.05mm  
4.5A-C 0.22+0.03 140+25g 0.06mm  
4.5B-C 0.24+0.03 180+25g 0.06mm  
4.5C-C 0.22+0.03 200+25g 0.06mm  
5H-C
0.25+0.02
190+25g
0.06mm
  
5L-C
0.25+0.02
240+25g
0.06mm
  
5O-C
0.25+0.02
240+30g
0.08mm
  
5P-C
0.28+0.02
180+25g
0.06mm
  
5Q-C
0.23+0.02
150+30g
0.06mm
  
5R-C
0.23+0.02
180+25g
0.06mm
 
5S-C
0.20+0.02
120+30g
0.06mm
 
5W-C
0.40+0.03
310+30g
0.08mm
  
5X-C 0.23+0.03 160+25g 0.06mm  
5Y-C 0.21+0.03 130+25g 0.06mm  
5Z-C 0.36+0.03 170+25g 0.05mm  
5AA-C 0.25+0.03 220+25g 0.06mm  
5AB-C 0.27+0.03 200+25g 0.06mm  
5AC-C 0.25+0.03 200+25g 0.06mm  
5AD-C 0.36+0.03 205+25g 0.05mm  
5AE-C 0.24+0.03 180+30g 0.05mm  
5AF-C 0.17+0.03 70+25g 0.045mm  
5AG-C 0.26+0.03 180+20g 0.05mm  
6D-C
0.46+0.02
325+25g
0.08mm
 
6H-C
0.31+0.03
360+30g
0.08mm
 
6I-C
0.30+0.03
230+30g
0.06mm
  
6J-C
0.48+0.02
410+25g
0.08mm
  
6L-C
0.25+0.03
125+30g
0.06mm
  
6.86A-C
0.35+0.02
290+25g
0.08mm
 
6.86B-C
0.50+0.02
325+25g
0.08mm
 
6.86C-C
0.30+0.02
225+25g
0.08mm
  
6.86D-C
0.50+0.02
300+25g
0.08mm
 
6.86E-C
0.40+0.02
175+25g
0.08mm
 
6.86F-C
0.30+0.02
250+30g
0.08mm
  
7A-C
0.60+0.02
900+30g
0.10mm
  
7B-C
0.50+0.02
325+25g
0.08mm
  
7C-C
0.41+0.02
175+25g
0.08mm
  
7D-C
0.50+0.02
325+25g
0.08mm
  
7K-C
0.28+0.02
120+25g
0.06mm
  
7M-C
0.30+0.02
175+25g
0.08mm
  
7O-C
0.57+0.02
825+25g
0.10mm
  
8H-C
0.50+0.02
250+25g
0.08mm
  
8Q-C 0.34+0.03 260+30g 0.08mm  
8.9A-C
0.35+0.02
225+25g
0.08mm
  
9A-C
0.42+0.02
225+25g
0.10mm
 
9G-C
0.60+0.02
525+25g
0.10mm
  
9H-C
0.55+0.02
475+25g
0.10mm
  
10E-C
0.50+0.02
475+25g
0.10mm
  
10G-C
0.45+0.02
275+25g
0.10mm
  
10H-C
0.45+0.02
300+25g
0.10mm
  
10I-C
0.40+0.02
125+25g
0.08mm
  
10K-C
0.50+0.02
175+25g
0.08mm
  
10L-C
0.48+0.02
300+25g
0.10mm
  
10T-C 0.38+0.03 280+30g 0.10mm  
11C-C
0.45+0.02
250+25g
0.10mm
  
12B-C
0.55+0.02
325+25g
0.10mm
 
12C-C
0.60+0.02
375+25g
0.10mm
  
12D-C
0.50+0.02
325+25g
0.10mm
  
12E-C
0.55+0.02
175+25g
0.08mm
  
12H-C
0.55+0.02
175+25g
0.08mm
  
12I-C
1.08+0.05
3.0+0.2kg
0.15mm
  
12L-C
1.19+0.05
5.0+0.5kg
0.20mm
  
12.7B-C
0.63+0.02
325+25g
0.10mm
  
15.9A-C
0.70+0.02
300+25g
0.10mm
  
15.9B-C
0.60+0.02
150+30g
0.08mm
  
15.9C-C
0.73+0.02
375+30g
0.10mm
  
15.9D-C
0.68+0.02
260+30g
0.08mm
  
All our metal domes are produced using high quality Japanese stainless steel JIS spec SUS 301/ SUS 304.
Na Bob is an ISO 9001:2000 registered company