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              Unified
BS
1768		               Unified
BS
1768		    
1/4" 3/8" 1/2" 3/4" 1"
No. 2 2B 400 304 6 895 34 No. 1B 7 894 2AK 133 306 33 No. 20 20L 30 D30 D30L D19 D19L D32 D21 IN19 42
1/4x5/16 X X X s 5/32 1/16 X
5/16x3/8 X X X X 3/16 X 3/64 X
5/16x11/32 X 7/32 5/64
3/8x7/16 X X X X X X 1/4 X X X X 3/32 X
7/16x1/2 X X X X X 9/32 X 1/8 X
1/2x9/16 X X X X X X 5/16 X X X X 5/32 X
9/16x5/8 X X X X X 11/32 X X 3/16 X X X X
19/32x11/16 X X X 3/8 X X X X 7/32 X X X X
5/8x11/16 X X 13/32 1/4 X X X X X
9/16x3/4 X 7/16 1/4 X X X X 9/32 X X X X
5/8x3/4 X X X X X X X 1/2 5/16 X X X X 5/16 X X X X X X
11/16x3/4 X X X 9/16 3/8 X X X 11/32 X X X X
3/4x25x32 X X 5/8 1/6B X X X 3/8 X X X X X X X
3/4x7/8 X X X X X 11/16 7/16N X X X 13/32 X
25/32x13/16 X X 3/4 X X X 7/16 1/4 X X X X X
13/16x7/8 X X X 13/16 X X X 1/2 5/16 X X X X X X X X
9/16x15/16 s 7/8 X X X 9/16 3/8 X X X X X X X
7/8x15/16 X X 15/16 X X X s s 19/32 X X
7/8x1 X 1 X X s X X s 5/8 7/16B X X X X X X
7/8x1.1/16 X X 1.1/16 X X s X X s 11/16 7/16N X X X X
15/16x1 X X 1.1/8 X X s X X s 3/4 1/2 X X X X X
15/16x1.1/8 X X 1.3/16 X X X 25/32 X
1x1.1/8 X X 1.1/4 X s X X s 13/16 9/16B X X X
1.1/16x1.1/8 X X 1.5/16 X X X 7/8 9/16N X X X X X
1.1/16x1.1/4 X X 1.3/8 X X X 15/16 5/8 X X X
1.1/8x1.5/16 X X 1.7/16 X s X X 1 X X
1.3/16x1.5/16 X X 1.1/2 X s X X 1.1/16 X X
1.1/4x1.3/8 X X 1.5/8 X s X X 1.1/8 3/4 X X
1.1/4x1.7/16 X X s 1.11/16 X X 1.3/16 X
1.5/16x1.1/2 X X 1.3/4 X s X X 1.1/4 X X
1.3/8x1.1/2 X X 1.13/16 X s X X 1.5/16 7/8 X
1.7/16x1.5/8 X X 1.7/8 X s X X 1.3/8 X
1.5/8x1.3/4 X 2 X s X X 1.7/16 X X
1.5/8x1.13/16 X X 2.1/16 X X X 1.1/2 X X
1.11/16x1.7/8 X X 2.1/8 X X 1.5/8 X X
1.13/16x2 X X 2.3/16 X s X X 1.11/16 X
1.3/4x2.1/16 X X 2.1/4 X s X X 1.3/4 X
2.3/16x2.3/8 X 2.3/8 X s X X 1.13/16 X X
2.1/4x2.7/16 X 2.7/16 X s X X 1.7/8 1.1/4 X X
2.9/16x2.3/4 s 2.9/16 s X X 2 X X
2.5/8x2.13/16 s 2.5/8 s X X 2.1/16 1.3/8 X
2.15/16x3.1/8 s 2.3/4 s X X 2.3/16 X
3x3.1/8 s 2.13/16 s 2.1/4 1.1/2 X
2.15/16 s 2.3/8 X
3 s X X 2.7/16 X
3.1/8 s X X 2.9/16 X
3.3/8 s X X 2.5/8 1.3/4 X
3.1/2 X X 2.3/4 X
3.3/4 X X 2.13/16 X
3.7/8 X X 2.15/16 X
4 X X 3 2 X
4.1/8 X X 3.1/8 X
4.1/2 X X
2 6 Bolt
BS916
1083 		1B 89
4 		No. 20 D19 D32 D21
1/8x3/16 X X 8BA 8BA X
3/16x1/4 X X 7BA 7BA X
1/4x5/16 X X 6BA 6BA X
5/16x3/8 X X 5BA 5BA X
3/8x7/16 X X 4BA 4BA X
7/16x1/2 X X 3BA 3BA X
1/2x9/16 X X 2BA 2BA X  
9/16x5/8 X X 1/8 W X s 1BA X  
9/16x11/16 X X 1BA OBA X  
5/8x3/4 X X OBA 3/16 W 1/4 X  
11/16x3/4 X X 3/16 W 1/4 X s 1/4 W 5/16 X  
11/16x13/16 X X 1/4 W 5/16 X s 5/16 W 3/8 X  
3/4x7/8 X X 5/16 W 3/8 X s 3/8 W 7/16 X
7/8x1 X X 3/8 W 7/16 X s 7/16 W 1/2 X
1x1.1/8 X X 7/16 W 1/2 X s 1/2 W 9/16 X X
1.1/8x1.1/4 X X 1/2 W 9/16 X s 9/16 W 5/8 X X
1.3/8x1.1/4 9/16 W 5/8 X s 5/8 W 11/16 X X
1.5/8x1.3/4 5/8 W 11/16 X s 11/16 W 3/4 X X
1.3/4x2 11/16 W 3/4 X s 3/4 W 7/8 X
3/4 W 7/8 X s 13/16 W 15/16 X
7/8 W 1 W X X
15/16 W X
1 W 1.1/8 X X
1.1/8 W 1.1/4 X X
1.1/4 W 1.3/8 X X
1.3/8 W 1.1/2 X
1.1/2 W 1.5/8 X
1.5/8 W 1.3/4 X
1.3/4 W 2 X
2W 2.1/4 X