Ceramco Inc, custom ceramics and ceramic fasteners manufacturer
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Fasteners
Dimensional Specs
Strength Properties
General Properties

Aluminum Oxide
Zirconium Oxide
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Notes
1. Due to our manufacturing process, point to point dimensions may not meet the ANSI B18.2.4.1M and B18.2.4.2M-1979 (R1995) standard.

2. Metric thread pitches are designated as pitch length in millimeters.

3. All ceramic screws and ceramic bolts are fully threaded.

4. All dimensions shown are in millimeters.

Dimensional Specifications - Metric Socket Head (a.k.a. Socket Cap)

Socket Cap Metric Fastener Dimensions Per ANSI B18.3.1M-1986
Size x Thread Pitch
 Body
Diameter
Head 
Diameter 
Head
Height 
Chamfer
or
Radius
Max 
Hexagon
Socket
Size
Nom.
 
Key
Engagment
Min
Transition
Dia.
M2x0.4
1.86 - 2.0
3.65 - 3.8
1.91 - 2.0
.20
 1.5
1.0
2.6 
M3x0.5
2.86 - 3.0 
 5.32 - 5.50 2.89 - 3.0 .30
2.5
 1.5 3.6
M4x0.7
3.82 - 4.0
6.8 - 7.0
3.88 - 4.0
.40
3.0
2.0
4.7
M5x0.8 4.85 - 5.0 8.27 - 8.5 4.86 - 5.0 .50 4.0 2.5 5.7
M6x1.0 5.82 - 6.0 9.74 - 10.0 5.85 - 6.0 .60 5.0 3.0 6.8
M8x1.25
7.78 - 8.0
12.70 - 13.0
7.83 - 8.0
.8
6.0
4.0
9.2

 
 
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P.O. Box 300, 1467 East Main Street, Center Conway, NH 03813
Tel: (603) 447-2090 | Fax: (603) 447-3906