Are Loading Data, Please wait while loading...

Hand Tools and Hardware Tools | Machinery and Engineering Tools | Measuring and Testing Instruments | Measuring Tools

Product Search
  •   
Product Columns
  Home >> Products >> Measuring Tools >> Thread Gauge >> Unified Thread Ring Gage >> Display
The American Standard Thread Ring Gauge (UNC, UNF, UNEF)
Zoom Browse
Product Name: The American Standard Thread Ring Gauge (UNC, UNF, UNEF)
Product Numbers: RG-302
Product Specifications: UNC, UNF, UNEF
Product Remark: The Amercian Standard Thread Ring Gauge
Product Class:Measuring Tools > Thread Gauge > Unified Thread Ring Gage
Product Details
【DateTime:2010-06-12 Browse:】【Font: Big Mid Small】【Print】【Close
UNC, UNF, UNEF  Thread Ring Gauge
Part No: RG-302
UN = Unified National Fixed Pitch Series
UNC = Unified National Coarse Series
UNF = Unified National Fine Series
UNEF = Unified National Extra Fine Series
UNS = Unified National Special
         The first designation is simply: UN. UN = Unified National. UN is used for a set of specific thread series which have uniform or constant threads-per-inch. The eight constant threads-per-inch (TPI) series are: 4-TPI; 6-TPI; 8-TPI; 12-TPI; 16-TPI; 20-TPI; 28-TPI; and 32-TPI. When a fixed series coincides with: C; F; or EF, the C; F; or EF take precedence.
Appended to the UN are several suffixes: C = Coarse; F = Fine; EF = Extra Fine; For ease of design, and improved size standardization, the writers of the ANSI B1.1 standard have established the Coarse, Fine and Extra Fine standardized series. Thus, if a design requires a coarse thread, the nominal major diameter is selected and then the coarse thread for that size can be identified within the standard and used in the design. Similar for fine and extra fine requirements. 
 
Nomina size: 3-6
Accracy : 2a or 3a
 
Specification:
unc
unf
unef
nominal size thread/perinch accuracy nominal size thread/perinch accuracy nominal size thread/perinch accuracy
3 48 2a、3a 3 56 2a、3a 12 32 2a、3a
4 40 2a、3a 4 48 2a、3a 1/4 32 2a、3a
5 40 2a、3a 5 44 2a、3a 5/16 32 2a、3a
6 32 2a、3a 6 40 2a、3a 3/8 32 2a、3a
8 32 2a、3a 8 36 2a、3a 7/16 28 2a、3a
10 24 2a、3a 10 32 2a、3a 1/2 28 2a、3a
12 24 2a、3a 12 28 2a、3a 9/16 24 2a、3a
1/4 20 2a、3a 1/4 24 2a、3a 5/8 24 2a、3a
5/16 18 2a、3a 5/16 24 2a、3a 11/16 24 2a、3a
3/8 16 2a、3a 3/8 20 2a、3a 3/4 20 2a、3a
7/16 14 2a、3a 7/16 20 2a、3a 7/8 20 2a、3a
1/2 13 2a、3a 1/2 18 2a、3a 13/16 20 2a、3a
9/16 12 2a、3a 9/16 18 2a、3a 15/16 20 2a、3a
5/8 11 2a、3a 5/8 16 2a、3a 1 20 2a、3a
3/4 10 2a、3a 3/4 14 2a、3a 1 1/16 18 2a、3a
7/8 9 2a、3a 7/8 12 2a、3a 1 1/8 18 2a、3a
1 8 2a、3a 1 12 2a、3a 1 3/16 18 2a、3a
1 1/8 7 2a、3a 1 1/8 12 2a、3a 1 1/4 18 2a、3a
1 1/4 7 2a、3a 1 1/4 12 2a、3a 1 5/16 18 2a、3a
1 3/8 6 2a、3a 1 3/8 12 2a、3a 1 3/8 18 2a、3a
1 1/2 6 2a、3a 1 1/2 12 2a、3a 1 7/16 18 2a、3a
1 3/4 5 2a、3a 1 3/4 12 2a、3a 1 1/2 18 2a、3a
2 4.5 2a、3a 2 12 2a、3a 1 9/16 18 2a、3a
……     ……     ……    
6     6     6    
 
 
nominal size
thread/
perinch
accu
racy
nominal size
thread/
perinch
accu
racy
nominal size
thread
/perinch
accu
racy
nominal size
thread
/perinch
accu
racy
5/16 20 2a、3a 7/8 32 2a、3a 1 5/16 20 2a、3a 1 11/16 12 2a、3a
5/16 28 2a、3a 15/16 12 2a、3a 1 5/16 28 2a、3a 1 11/16 16 2a、3a
3/8 20 2a、3a 15/16 16 2a、3a 1 3/8 8 2a、3a 1 11/16 20 2a、3a
3/8 28 2a、3a 15/16 28 2a、3a 1 3/8 16 2a、3a 1 3/4 6 2a、3a
7/16 32 2a、3a 15/16 32 2a、3a 1 3/8 20 2a、3a 1 3/4 8 2a、3a
1/2 16 2a、3a 1 16 2a、3a 1 3/8 28 2a、3a 1 3/4 12 2a、3a
9/16 16 2a、3a 1 28 2a、3a 1 7/16 6 2a、3a 1 3/4 16 2a、3a
9/16 20 2a、3a 1 1/16 8 2a、3a 1 7/16 8 2a、3a 1 3/4 20 2a、3a
9/16 32 2a、3a 1 1/16 12 2a、3a 1 7/16 12 2a、3a 1 13/16 6 2a、3a
5/8 12 2a、3a 1 1/16 16 2a、3a 1 7/16 16 2a、3a 1 13/16 8 2a、3a
5/8 16 2a、3a 1 1/16 20 2a、3a 1 7/16 20 2a、3a 1 13/16 12 2a、3a
5/8 20 2a、3a 1 1/16 28 2a、3a 1 7/16 28 2a、3a 1 13/16 16 2a、3a
5/8 28 2a、3a 1 1/8 8 2a、3a 1 1/2 8 2a、3a 1 13/16 20 2a、3a
11/16 12 2a、3a 1 1/8 16 2a、3a 1 1/2 16 2a、3a 1 7/8 6 2a、3a
11/16 16 2a、3a 1 1/8 20 2a、3a 1 1/2 20 2a、3a 1 7/8 8 2a、3a
11/16 20 2a、3a 1 1/8 28 2a、3a 1 1/2 28 2a、3a 1 7/8 12 2a、3a
11/16 28 2a、3a 1 3/16 8 2a、3a 1 9/16 6 2a、3a 1 7/8 16 2a、3a
3/4 12 2a、3a 1 3/16 12 2a、3a 1 9/16 8 2a、3a 1 7/8 20 2a、3a
3/4 28 2a、3a 1 3/16 16 2a、3a 1 9/16 12 2a、3a 1 15/16 6 2a、3a
3/4 32 2a、3a 1 3/16 20 2a、3a 1 9/16 16 2a、3a 1 15/16 8 2a、3a
13/16 12 2a、3a 1 3/16 28 2a、3a 1 9/16 20 2a、3a 1 15/16 12 2a、3a
13/16 16 2a、3a 1 1/4 8 2a、3a 1 5/8 6 2a、3a 1 15/16 16 2a、3a
13/16 28 2a、3a 1 1/4 16 2a、3a 1 5/8 8 2a、3a 1 15/16 20 2a、3a
13/16 32 2a、3a 1 1/4 20 2a、3a 1 5/8 12 2a、3a 2 6 2a、3a
7/8 12 2a、3a 1 1/4 28 2a、3a 1 5/8 16 2a、3a 2 8 2a、3a
7/8 16 2a、3a 1 5/16 8 2a、3a 1 5/8 20 2a、3a ……    
7/8 28 2a、3a 1 5/16 16 2a、3a 1 11/16 6 2a、3a 6 …… ……
【Font: Big Mid Small】【Print】【Close】【Back to Top

Home | About Us | Products | User Center | News | Contact Us | Catagory | Site Map | Links