Thursday, April 26, 2012

Metric Conversion for threads to UNC & UNF

Ref :- http://www.elginfasteners.com/metric.htm

Diameter/Decimal/Metric Chart for Small Diameter Fasteners
Gauge
or Diameter
Decimal (in)
mm
Metric fastener conversions for small diameter fasteners, industrial bolts and machine screws.
No. 0000
0.021
.53
No. 000
0.034
.86
No. 00
0.047
1.19
No. 0
0.060
1.524
No. 1
0.073
1.854
No. 2
0.086
2.184
No. 3
0.099
2.515
No. 4
0.112
2.845
No. 5
0.125
3.175
No. 6
0.138
3.505
No. 8
0.164
4.166
No. 10
0.190
4.826
No. 12
0.216
5.484
Fastener Conversion Chart
Inch Equivalent
Metric Size-Pitch
ISO and IFI Rec.
UNC
UNF
1 - 64
1 - 72
M2 x 0.4
3 - 48
3 - 56
M2.5 x 0.45
4 - 40
4 - 48
M3 x .05
6 - 32
6 - 40
M3.5 x .06
8 - 32
8 - 36
M4 x .07
10 - 24
10 - 32
M5 x .08
1/4 - 20
1/4 - 28
M6 x 1
5/16 -18
5/16 - 24
M8 x 1.25
3/8 -16
3/8 - 24
M10 x 1.5
7/16 -14
7/16 - 20
M12 x 1.75
1/2 - 13
1/2 - 20
M14 x 2
5/8 - 11
5/8 - 18
M18 x 2
3/4 - 10
3/4 - 16
M20 x 2.5
1 - 8
1-12
M24 x 3
1-1/4 - 7
1-1/8 - 12
M30 x 3.5
1-1/2 - 6
1-1/4 - 12
M36 x 4
Approximate Equivalency Chart Metric/US
Roughly Equivalent US Bolt Materials
Metric
Nut Class
SAE J429
Normally Used
Grades
ASTM Grades
4.6
4 or 5
1
A307, Grade A
4.8
4 or 5
2
.
5.8
5
2
.
8.8
8
5
A325, A449
9.8
9
5+
A193, B7 and B16
10.9
10 or 12
8
A490, A354, Grade 8D
12.9
10 or 12
.
A540; B21 through B24
Common DIN Numbers for Metric Fasteners
DINHex Capscrews
931Coarse thread pitch partially threaded (specify grade)
933Coarse thread pitch fully threaded (specify grade)
930Fine thread pitch partially threaded (specify grade)
961Fine thread pitch fully threaded (specify grade)
DINNuts
934Hex nuts (specify pitch and class)
985Nylon insert locknuts (specify pitch and class)
980VAll metal locknuts (specify pitch and class)
DINWashers
125Flatwashers
127Lockwashers
DINSocket Products
912Socket head capscrews (normally GR 12.9 and coarse thread)
7991Flat head socket capscrews (normally GR 12.9 and coarse thread)
916Socket setscrews (normally GR 12.9 and coarse thread)
DINMachine Screws
7985Pan head Phillips drive zinc plated
965Flat head Phillips drive zinc plated
DINThreaded Rod
975All threaded rod (normally 1 meter lengths, specify grade and pitch)

3 comments:

  1. Widespread Industrial supplies products like Metric Fasteners for many diverse industries, including - Oil Refineries, Automotive Repair and Maintenance, Machine Shop,  Metro Maintenance Shops, Manufacturing Plants, MRO Facilities, County Correctional Facilities, City and County Maintenance Yards includes all bellow hardware.

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