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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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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 
Distributor of Industry Standard and Military Specification Threaded Fasteners