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1x inch = 25,40mm

1x foot  = 30,48cm

1x yard = 91,44cm

 

"G" =  ( coil X inch )

d1 =  max

d2 =  min

" M " ( a = 60 )

" MF " ( a = 60 )

" G " ( a = 54,60 )

type

"P"

d 1

d 2

3 0,5 2,980 2,273
4 0,7 3,978 3,002
5 0,8 4,976 3,869
6 1,0 5,974 4,596
7 1,0 6,974 5,596
8 1,25 7,972 6,272
9 1,25 8,972 7,272
10 1,50 9,968 7,938
11 1,50 10,968 8,938
12 1,75 11,966 9,602
14 2,0 13,962 11,271
16 2,0 15,962 13,271
18 2,5 17,958 14,625
20 2,5 19,958 16,625
22 2,5 21,958 18,625
24 3.0 23,952 19,955
27 3,0 26,952 22,955
30 3,5 29,947 25,306
33 3,5 32,947 28,306
type

"P"

d 1

d 2

6

0,75 5,978 4,929
8 1,0 7,974 6,596
10 1,0 9,974 8,596
10 1,25 9,972 8,272
12 1,0 11,974 10,590
12 1,25 11,972 10,258
12 1,5 11,968 9,930
14 1,5 13,968 11,930
16 1,5 15,968 13,930
18 1,5 17,968 15,930
18 2,0 17,962 15,271
20 1,5 19,968 17,930
20 2,0 19,962 17,271
22 1,5 21,962 19,271
22 2,0 21,962 19,271
24 1,5 23,968 21,920
24 2,0 23,962 21,261
27 1,5 26,968 24,920
27 2,0 26,962 24,261
type

"P"

G

d 1

d 2

G 1/8 0,907 28 9,728 8,566
G 1/4 1,337 19 13,157 11,445
G 3/8 1,337 19 16,412 14,950
G 1/2 1,814 14 20,955 18,631
G 5/8 1,814 14 22,911 20,587
G 3/4 1,814 14 26,441 24,117
G 7/8 1,814 14 30,201 27,877
G1  A 2,309 11 33,249 30,291
G1 1/8A 2,309 11 37,897 34,939
G1 1/4A 2,309 11 41,910 38,952
G1 1/2A 2,309 11 47,803 44.845
" UN " cl. 2A-2B (a = 60)
1  1/8 3,175 8 28,521 24,653
1  1/4 3,175 8 31,697 27,800
1  3/8 3,175 8 34,869 30,973
1  1/2 3,175 8 38,044 34,148
1  5/8 3,175 8 41,219 37,323
1  3/4 3,175 8 44,392 40,495
1  7/8 3,175 8 47,567 43,670

" UNC " class 2A - 2B

" UNF " class 2A - 2B

type

"P"

G

d 1

d 2

1/4 1,2700 20 6,322 4,580
5/16 1,4111 18 7,907 5,972
3/8 1,5875 16 9,491 7,318
7/16 1,8143 14 11,076 8,603
1/2 1,9538 13 12,661 9,998
9/16 2,1167 12 14,246 11,367
5/8 2,3091 11 15,834 12,698
3/4 2,5400 10 19,004 15,555
7/8 2,8222 9 22,176 18,532
1 3,1750 8 25,349 21,052
1 1/8 3,6286 7 28,519 23,623
1 1/4 3,6286 7 31,694 26,792
1 3/8 4,2333 6 34,864 29,162
1 1/2 4,2333 6 38,039 32,335
1 3/4 5,0800 5 44,381 38,148
type

"P"

G

d 1

d 2

1/4 0,9071 28 6,324 5,063
5/16

1,0583

24 7,909 6,442
3/8 1,0583 24 9,497 8,027
7/16 1,2700 20 11,079 9,325
1/2 1,2700 20 12,666 10,910
9/16 1,4111 18 14,251 12,304
5/8 1,4111 18 15,389 13,887
3/4 1,5875 14 19,011 16,823
7/8 1,8143 14 22,184 19,693
1 2.1167 12 25,354 22,457
1 1,8143 14 25,357 24,221
1 1/8 2,1167 12 28,529 26,629
1 1/4 2,1167 12 31,704 28,799
1 3/8 2,1167 12 34,876 31,969
1 1/2 2,1167 12 38,051 35,141

with the compliments of : Alpha Motors bv