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Square Nuts
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Unification.
Bold type indicates products unified dimensionally with British and Canadian standards.
Tops of Nuts.
Tops of nuts shall be flat and chamfered or washer crowned. Diameter of the chamfer circle shall be equal to the maximum width across flats within a tolerance of minus 15 percent. The surface of the chamfer may be slightly convex or rounded.
Width Across Flats.
Maximum width across flats shall not be exceeded. No transverse section through the nut between 25 and 75 percent of the actual nut thickness as measured from the bearing surface shall be less than the minimum width across flats.
Bearing Surface.
Bearing surface shall be perpendicular to the axis of the threaded hole within a tolerance of 3 deg for 1 in. nominal size nuts or smaller, and 2 deg for nuts larger than 1 in.
True Position of Tapped Hole.
The axis of tapped hole shall be located at true position with respect to the axis of nut body within a tolerance zone having a diameter equivalent to 10 percent of the maximum width across flats, regardless of feature size.
Threads.
Threads shall be Unified coarse thread series (UNC series), Class 2B, in accordance with ASME B1.1
Material.
Unless otherwise specified, chemical and mechanical properties of steel nuts shall conform with Grade A of ASTM A563. Nuts of other materials such as corrosion resistant (stainless) steel, brass, bronze and aluminum alloys shall have properties as agreed upon between the manufacturer and purchaser. The properties for nuts of several grades of corrosion resistant steel alloys are covered in ASTM F594 and of several nonferrous materials in ASTM F467.
Nominal Size.
Where specifying nominal size in decimals, zeros preceding the decimal and in the fourth decimal place shall be omitted.
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Results 1 - 13 of 13
1
Item #
Description
Nominal Size or Basic Major Dia. of Thread
Basic (F)
Max. (G)
Basic (H)
SN02500XXX
Square Nut, 1/4" Nominal Dia.
1/4
in
7/16
in
0.619
in
7/32
in
SN03125XXX
Square Nut, 5/16" Nominal Dia.
5/16
in
9/16
in
0.795
in
17/64
in
SN03750XXX
Square Nut, 3/8" Nominal Dia.
3/8
in
5/8
in
0.884
in
21/64
in
SN04375XXX
Square Nut, 7/16" Nominal Dia.
7/16
in
3/4
in
1.061
in
3/8
in
SN05000XXX
Square Nut, 1/2" Nominal Dia.
1/2
in
13/16
in
1.149
in
7/16
in
SN06250XXX
Square Nut, 5/8" Nominal Dia.
5/8
in
1
in
1.414
in
35/64
in
SN07500XXX
Square Nut, 3/4" Nominal Dia.
3/4
in
1-1/8
in
1.591
in
21/32
in
SN08750XXX
Square Nut, 7/8" Nominal Dia.
7/8
in
1-5/16
in
1.856
in
49/64
in
SN10000XXX
Square Nut, 1" Nominal Dia.
1
in
1-1/2
in
2.121
in
7/8
in
SN11250XXX
Square Nut, 1-1/8" Nominal Dia.
1-1/8
in
1-11/16
in
2.386
in
1
in
SN12500XXX
Square Nut, 1-1/4" Nominal Dia.
1-1/4
in
1-7/8
in
2.652
in
1-3/32
in
SN13750XXX
Square Nut, 1-3/8" Nominal Dia.
1-3/8
in
2-1/16
in
2.917
in
1-13/64
in
SN15000XXX
Square Nut, 1-1/2" Nominal Dia.
1-1/2
in
2-1/4
in
3.182
in
1-5/16
in
Results 1 - 13 of 13
1
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