Square Nuts
A square nut is a four-sided nut. Compared to standard hex nuts, square nuts have a greater surface in contact with the part being fastened, and therefore provide greater resistance to loosening (though also greater resistance to tightening)[citation needed]. They are also much less likely to become rounded-off after repeated loosening/tightening cycles. Square nuts are typically mated with square-headed bolts. Square nuts are used along with flat washers in order to avoid damage from its sharp edges and helps to increase the strength of the fastener. Square nuts can have standard, fine or coarse threading with platings of zinc yellow, plain, zinc clear, tin and cadmium, among others. Most can meet either the ASTM A194, ASTM A563, or ASTM F594 standard.
Application : Commonly used in furniture as a blind nut, they are also used in rail channels in order to prevent turning of rail when pressure is applied. They are also used to make a perfect foundation in metal channels for hidden fasteners.
Types : Pan / Round / Oval / Countersunk / Truss head
Size :
Machine Screw Square Nut Dimensions |
||||
Nut Size |
Nom. Diameter |
Width |
Thickness |
|
Across Flats |
Across Corners |
Nom. |
||
#0 |
0.0600 |
5/32 |
7/32 |
3/64 |
#1 |
0.0730 |
5/32 |
7/32 |
3/64 |
#2 |
0.0860 |
3/16 |
1/4 |
1/16 |
#3 |
0.0990 |
3/16 |
1/4 |
1/16 |
#4 |
0.1120 |
1/4 |
11/32 |
3/32 |
#5 |
0.1250 |
5/16 |
27/64 |
7/64 |
#6 |
0.1380 |
5/16 |
27/64 |
7/64 |
#8 |
0.1640 |
11/32 |
15/32 |
1/8 |
#10 |
0.1900 |
3/8 |
33/64 |
1/8 |
#12 |
0.2160 |
7/16 |
19/32 |
5/32 |
1/4 |
0.2500 |
7/16 |
19/32 |
3/16 |
5/16 |
0.3125 |
9/16 |
49/64 |
7/32 |
3/8 |
0.3750 |
5/8 |
55/64 |
1/4 |
Regular Square Nut Dimensions |
|||
Nut Size |
Width |
Thickness |
|
Across Flats |
Across Corners |
Basic |
|
1/4 |
7/16 |
19/32 |
7/32 |
5/16 |
9/16 |
49/64 |
17/64 |
3/8 |
5/8 |
27/32 |
21/64 |
7/16 |
3/4 |
1 1/64 |
3/8 |
1/2 |
13/16 |
1 3/32 |
7/16 |
5/8 |
1 |
1 23/64 |
35/64 |
3/4 |
1 1/8 |
1 17/32 |
21/32 |
7/8 |
1 5/16 |
1 25/32 |
49/64 |
1 |
1 1/2 |
2 3/64 |
7/8 |
1 1/8 |
1 11/16 |
2 19/64 |
1 |
1 1/4 |
1 7/8 |
2 9/16 |
1 3/32 |
1 3/8 |
2 1/16 |
2 13/16 |
1 13/64 |
1 1/2 |
2 1/4 |
3 1/16 |
1 5/16 |
Specification :
- Cold Froging : M2-M24
- Hot forging M24-M100, 1-1/2” Dia, up to 1100mm lg
- Machining and CNC for Customized connecting element: up to M100 / 4” Dia, up to 1500mm lg
Stainless Steel Square Nuts : M2, M3, (M3.5), M4, M5, M6, M8, M10, M12, (M14), M16, (M18), M20, (M22), M24, (M27), M30, M33, M36, M42, (M45), M48 to M160 and Custom
Finishing : Zinc (yellow, white, blue, black), black oxide. Geometry, Dacroment, anodizing, nickel plated, plated zinc-nickel, Stainless steel: Passivated Self-Colour, Hot Dip Galvanised (HDG), Bright Zinc Plated (BZP), Sherardized, Stainless Steel, Mechanically Applied coating and some special one like DACROMET.
Grade : 18-8 Stainless Steel, 4.8, 8.8, A2, A4, A2-70; A4-70; A4-80 Square Nuts.