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SAE Bolts, Nuts & Washers

 

This table presents the most commonly used small to medium size varieties of SAE hardware.

 

Click here for a table of metric hardware sizes.

Size &
Threads/lnch		Series
Designation		Tap
Drill		Clearance
Drill		Counter
Bore		Nut
Points		Nut
Flats		Washer
I.D.		Washer
O.D.
0-80UNF0.0460.0701/80.1800.1560.0780.187
1-64UNC0.0590.0895/320.1800.1560.0990.250
1-72UNF       
2-56UNC0.0700.1043/160.2170.1870.0990.250
2-64UNF       
3-48UNC0.0780.1203/160.2170.1870.1050.250
3-56UNF       
4-40UNC0.0890.1367/320.2890.2500.1250.312
4-48UNF       
5-40UNC       
5-44UNF        
6-32UNC0.1060.1619/320.3610.3120.1490.375
6-40UNF       
8-32UNC0.1360.1895/160.3970.3430.1740.375
8-36UNF       
10-24UNC0.1490.21311/320.4330.3750.2030.437
10-32UNF       
12-24UNC       
12-28UNF       
1/4-20UNC0.2010.2817/160.5050.4370.2650.500
1/4-28UNF       
5/16-18UNC       
5/16-24UNF       
3/8-16UNC       
3/8-24UNF       
7/16-14UNC       
7/16-20UNF       
1/2-13UNC       
1/2-20UNF       
9/16-12UNC       
9/16-18
5/8-11
5/8-18
3/4-10
3/4-16		UNF
UNC
UNF
UNC
UNF		 
7/8-9
7/8-14
1-8
1-12
1-14		UNC
UNF
UNC
UNF
UN
11/8-7
11/8-8
11/8-12
11/4-7
1114-8		UNC
UN
UNF
UNC
UN
11/4-12
1 3/8-6
1 3/8-8
1 3/8-12
11/2-6		UNF
UNC
UN
UNF
UNC
1 1/2-8
1 1/2-12
1 5/8-8
1 3/4-5
1 3/4-8		UN
UNC
UN
UNC
UN
1 7/8-8
2-4 1/2
2-8
2 1/4-4.5
2 1/4-8		UN
UNC
UN
UNC
UN
2 1/2-4
2 1/2-8
2 3/4-4
2 3/4-8
3-4		UNC
UN
UNC
UN
UNC
3-8
3 1/4-4
3 1/4-8
3 1/2-4
3 1/2-8		UN
UNC
UN
UNC
UN
3 3/4-4
3 3/4-8
4-4
4-8		UNC
UN
UNC
UN
1) See Drill Sizes page for cross reference.
2) Nut Points is the distance between opposite corners of hex nuts.
3) Nut Flats is the distance between opposite sides of hex nuts.
 
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