UNC Bolts
001.67.421
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€7.00*
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001.67.411
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€7.35*
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001.67.621
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€6.45*
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001.67.451
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€4.40*
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001.67.616
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€11.70*
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001.67.631
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€4.30*
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001.67.431
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€4.60*
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001.67.612
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€42.40*
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001.67.221
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€7.15*
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001.67.211
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€1.65*
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001.67.461
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€4.10*
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001.65.621
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€3.15*
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001.67.851
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€3.30*
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001.67.441
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€5.30*
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001.67.452
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€16.50*
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001.65.421
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€9.25*
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001.67.627
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€3.10*
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001.67.648
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€4.45*
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001.67.426
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€7.25*
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001.67.422
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€7.45*
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001.67.471
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€6.60*
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001.65.521
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€5.85*
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001.67.671
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€2.85*
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001.67.642
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€18.30*
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UNC bolts
In addition to screws and bolts with metric threads, which are widely used in Europe, UNC inch bolts are also common screw variants.
Often referred to simply as "inch bolts" or "UNC bolts" in the field of fastening technology, they are distinguished by their standard American coarse UNC thread. "UNC" is an abbreviation for "Unified National Coarse". The UNC standard coarse thread is found on certain threaded screws in the United States and Canada which comply with the Unified Thread standard.
For UNC inch bolts, the outer diameter and thread pitch are stated in inches. In addition, UNC bolts are calculated in terms of turns per inch. The flank angle of 60 degrees for inch bolts corresponds exactly to the flank angle of metric bolts that meet DIN and ISO standards. UNC inch bolts are commonly used in the assembly of computer components, among other things.
UNC bolts: The difference between UNC, UNF, NC and NF
In addition to the UNC thread type, which is the American standard for coarse threads, there is also the UNF ("Unified National Fine") thread type, which is related to this variant. The UNF variant is the American counterpart to the metric fine pitch thread. In the past, UNC bolts were also called NC bolts for short. Analogously, UNF bolts were also called NF bolts.
UNC inch bolts in the ETTINGER product range
ETTINGER offers bolts with inch threads with various different drive types and screw heads, including:
- UNC inch bolts with slot or with cross slot/slot combination
- UNC bolts with cross slot/Phillips-H or Pozidriv-Z
- UNC bolts with slotted drive
- Bolts with inch thread and Torx drive
- UNC threaded bolts with hexagon head – in the hexagonal version we also carry thread-forming inch bolts with pressed-on washers
- UNC inch bolts with countersunk head
- UNC bolts with flat or pan head
Common thread sizes for UNC bolts
ETTINGER carries UNC inch bolts in various thread sizes such as UNC 4-40 bolts – for example, galvanized with cross slot and countersunk head, and 6-32 UNC bolts, for example with pan head and slot.
The ETTINGER product range includes UNC inch bolts with the following thread sizes:
- 2-56 UNC bolts
- 4-40 UNC bolts
- 6-32 UNC bolts
- 8-32 UNC bolts
- 10-24 UNC bolts
- 10-32 UNC bolts
UNC inch bolts in different materials
Depending on the specific material and application, different materials are recommended when selecting an appropriate UNC inch bolt.
In our online store you can buy inch bolts made of different materials, such as:
UNC inch bolts: Thread table for inch and metric dimensions
As an example, the bolt identifier for UNC inch bolts is as follows: 4-40 x 1/4". The individual parameters can be broken down as follows:
- 4 = code for the thread diameter
- 40 = threads per inch
- 1/4" = length of the bolt
One inch is equal to 2.54 cm, so the stated thread diameters for inch bolts correspond to the following diameters in millimeters:
- 2 = 2.18 mm
- 4 = 2.84 mm
- 5 = 3.18 mm
- 6 = 3.50 mm
- 8 = 4.17 mm
- 10 = 4.83 mm
Quality from ETTINGER – your requirements are our mission
For more than 60 years we have been supplying fasteners and electromechanical components in accordance with widely recognized standards. We rely on qualified employees, strict incoming goods inspections and innovative technologies to ensure that we consistently meet our high quality standards for battery and soldering technology as well as other electromechanical accessories.
At ETTINGER, we prefer to manufacture and source our parts in Germany. Thanks to long-standing, reliable business relationships with our suppliers we now have strong partners at our side, which in turn enable us to offer you products of the highest quality.
Quality through service and expertise. When you buy components from ETTINGER, you can enjoy peace of mind and confidence in your project.
About ETTINGER
ETTINGER GmbH is based in Hofolding near Munich and has been supplying an extensive range of mechanical components for electronics production for over 60 years. Approximately 25,000 products are permanently available from stock and we can supply another 15,000 products in line with specific customer requirements. We supply many industry sectors with our precision turned parts.
- Electronics manufacturing
- Mechanical engineering
- Medical technology
- Measurement engineering
- Automotive sector and industry
- Sensor technology
- Environmental and solar technology