Square Nuts

Filter

Square nuts are four-sided nuts designed for use with a square head bolt & flat washer. They have a large surface in contact with the part being fastened and therefore, offer...Read more

DYNAFORM -

Plain Vinyl Ester Resin Fiberglass Reinforced Square Nuts

StyleModelThread SizeSquare WidthThread TypeThread DirectionMaterialFinishPrice
A8743201/2"-131/2"CoarseRight HandVinyl Ester ResinPlain€7.72
B8743303/4"-103/4"CoarseRight HandVinyl Ester ResinPlain€9.77
-

Plain Stainless Steel Regular Square Nuts

StyleModelThread SizeSquare HeightSquare WidthThread TypeThread DirectionMaterialFinishPricePkg. Qty.
AE146-1/2SS61/2"-137/16"13/16"--Stainless SteelPlain-1
RFQ
AE146-1/2SS1/2"-137/16"13/16"--Stainless SteelPlain-1
RFQ
BB51096.025.00011/4"-207/32"7/16"CoarseRight HandStainless SteelPlain€696.343025
CB51096.037.00013/8"-1621/64"5/8"CoarseRight HandStainless SteelPlain€731.601375
-

Zinc Plated Steel Regular Square Nuts

StyleModelThread SizeClassSquare HeightSquare WidthThread TypeThread DirectionHardnessPricePkg. Qty.
AU11140.013.0001#6-32-1/8"5/16"CoarseRight Hand-€4.56100
BU11140.016.0001#8-32-1/8"11/32"CoarseRight Hand-€4.98100
CU11140.019.0001#10-24-1/8"3/8"CoarseRight Hand-€4.66100
DU11140.021.0001#12-24-5/32"7/16"CoarseRight Hand-€6.43100
EU11140.150.00011 1/2"-6-1 5/16"2 1/4"CoarseRight Hand-€21.651
FU11140.125.00011 1/4"-7-1 3/32"1 7/8"CoarseRight Hand-€11.221
GU11140.112.00011 1/8"-7-1"1 11/16"CoarseRight Hand-€5.191
HU11140.100.00011"-8-7/8"1 1/2"CoarseRight Hand-€14.545
ISQNI20500-050BX1/2"-13Not Applicable29/64"13/16"CoarseRight HandRockwell B68-C32€22.7750
JU11140.050.00011/2"-13-7/16"13/16"CoarseRight Hand-€22.6650
KU11140.025.00011/4"-20-7/32"7/16"CoarseRight Hand-€7.22100
LU11140.075.00013/4"-10-21/32"1 1/8"CoarseRight Hand-€14.5510
MU11140.037.00013/8"-16-21/64"5/8"CoarseRight Hand-€22.53100
NU11140.062.00015/8"-11-35/64"1"CoarseRight Hand-€21.6525
OSQNI20620-025BX5/8"-11Not Applicable9/16"1"CoarseRight HandRockwell B68-C32€18.2825
PU11140.031.00015/16"-18-17/64"9/16"CoarseRight Hand-€15.37100
QSQNI20310-100BX5/16"-18Not Applicable9/32"9/16"CoarseRight HandRockwell B68-C32€18.72100
RU11140.087.00017/8"-9-49/64"1 5/16"CoarseRight Hand-€10.065
SU11140.043.00017/16"-14-3/8"3/4"CoarseRight Hand-€38.81100
TM11140.040.0001M4 x 0.7Not Applicable3.203125 mm7 mmMetricRight Hand-€9.38100
UM11140.050.0001M5 x 0.8Not Applicable4 mm8 mmMetricRight Hand-€9.08100
VL11140.060.0001M6 x 1Class 55 mm10 mmMetricRight Hand-€310.813700
WM11140.060.0001M6 x 1Not Applicable5 mm10 mmMetricRight Hand-€11.91100
XL11140.080.0001M8 x 1.25Class 56.5 mm13 mmMetricRight Hand-€205.091900
YM11140.100.0001M10 x 1.5Not Applicable8 mm17 mmMetricRight Hand-€29.00100
StyleModelThread SizeSquare HeightSquare WidthMaterialFinish
AAB102-1/2-EG1/2"-137/16"13/16"SteelElectroplated Zinc
RFQ
AAB102-5/8EG5/8"-1135/64"1"SteelElectroplated Zinc
RFQ
StyleModelThread SizeSquare HeightSquare WidthMaterialFinish
AE1461/21/2"-137/16"1 3/8"SteelGold Galvanized
RFQ
AE146-5/85/8"-1135/64"1"SteelGold Galvanized
RFQ
AE146-5/165/16"-1817/64"9/16"SteelGold Galvanized
RFQ
StyleModelThread SizeSquare HeightSquare WidthMaterialFinish
AAB102-1/21/2"-13--SteelGold Galvanized
RFQ
AAB1021/41/4"-20--SteelGold Galvanized
RFQ
AAB1023/83/8"-16--SteelGold Galvanized
RFQ
AAB102-5/85/8"-11--SteelGold Galvanized
RFQ
AAB102-7/87/8"-949/64"1 5/16"SteelGold Galvanized
RFQ
FABORY -

Plain Grade A Steel Heavy Square Nuts

StyleModelThread SizeSquare HeightSquare WidthThread TypeThread DirectionMaterialFinishGradePricePkg. Qty.
AU11121.125.00011 1/4"-71 1/4"2"CoarseRight HandSteelBlack OxideGrade A€22.771
BU11121.112.00011 1/8"-71 1/8"1 13/16"CoarseRight HandSteelBlack OxideGrade A€24.121
CU11121.100.00011"-81"1 5/8"CoarseRight HandSteelBlack OxideGrade A€8.911
DU11121.050.00011/2"-131/2"7/8"CoarseRight HandSteelBlack OxideGrade A€40.5025
EU11121.025.00011/4"-201/4"1/2"CoarseRight HandSteelBlack OxideGrade A€59.6450
FU11121.075.00013/4"-103/4"1 1/4"CoarseRight HandSteelBlack OxideGrade A€135.295
GU11121.037.00013/8"-163/8"11/16"CoarseRight HandSteelBlack OxideGrade A€114.4750
HU11121.062.00015/8"-115/8"1 1/16"CoarseRight HandSteelBlack OxideGrade A€74.0110
IU11121.031.00015/16"-185/16"9/16"CoarseRight HandSteelBlack OxideGrade A€29.7450
JU11121.087.00017/8"-97/8"1 7/16"CoarseRight HandSteelBlack OxideGrade A€249.955
FABORY -

Plain Steel Heavy Square Nuts

StyleModelThread SizeSquare HeightSquare WidthThread TypeThread DirectionFinishMaterialPricePkg. Qty.
AU11122.125.00011 1/4"-71 1/4"2"CoarseRight HandBlack OxideSteel€29.571
BU11122.112.00011 1/8"-71 1/8"1 13/16"CoarseRight HandBlack OxideSteel€22.981
CU11122.100.00011"-81"1 5/8"CoarseRight HandBlack OxideSteel€14.681
DB11122.100.00011"-81"1 5/8"CoarseRight HandPlainSteel€518.9243
EU11122.050.00011/2"-131/2"7/8"CoarseRight HandBlack OxideSteel€120.5525
FU11122.025.00011/4"-201/4"1/2"CoarseRight HandBlack OxideSteel€70.7050
GB11122.075.00013/4"-103/4"1 1/4"CoarseRight HandPlainSteel€960.9690
HU11122.075.00013/4"-103/4"1 1/4"CoarseRight HandBlack OxideSteel€58.205
IU11122.062.00015/8"-115/8"1 1/16"CoarseRight HandBlack OxideSteel€81.2210
FABORY -

Plain Steel Regular Square Nuts

StyleModelThread SizeSquare HeightSquare WidthThread TypeThread DirectionMaterialFinishPricePkg. Qty.
AU11120.013.0001#6-321/8"5/16"CoarseRight HandSteelBlack Oxide€14.13100
BU11120.019.0001#10-241/8"3/8"CoarseRight HandSteelBlack Oxide€12.73100
CU11120.150.00011 1/2"-61 5/16"2 1/4"CoarseRight HandSteelBlack Oxide€9.241
DU11120.125.00011 1/4"-71 3/32"1 7/8"CoarseRight HandSteelBlack Oxide€5.841
EU11120.112.00011 1/8"-71"1 11/16"CoarseRight HandSteelBlack Oxide€4.231
FU11120.100.00011"-87/8"1 1/2"CoarseRight HandSteelBlack Oxide€14.545
GU11120.050.00011/2"-137/16"13/16"CoarseRight HandSteelBlack Oxide€18.6150
HU11120.025.00011/4"-207/32"7/16"CoarseRight HandSteelBlack Oxide€6.53100
IU11120.075.00013/4"-1021/32"1 1/8"CoarseRight HandSteelBlack Oxide€10.5510
JU11120.037.00013/8"-1621/64"5/8"CoarseRight HandSteelBlack Oxide€17.79100
KU11120.062.00015/8"-1135/64"1"CoarseRight HandSteelBlack Oxide€18.3125
LU11120.031.00015/16"-1817/64"9/16"CoarseRight HandSteelBlack Oxide€13.55100
MU11120.087.00017/8"-949/64"1 5/16"CoarseRight HandSteel-€9.695
NU11120.043.00017/16"-143/8"3/4"CoarseRight HandSteelBlack Oxide€99.39100
FABORY -

Plain Grade 18-8 Stainless Steel Regular Square Nuts

StyleModelThread SizeSquare HeightSquare WidthThread TypeThread DirectionMaterialFinishGradePricePkg. Qty.
AU51096.011.0001#4-403/32"1/4"CoarseRight HandStainless SteelPlainGrade 18-8€25.3050
BU51096.013.0001#6-321/8"5/16"CoarseRight HandStainless SteelPlainGrade 18-8€8.0150
CU51096.016.0001#8-321/8"11/32"CoarseRight HandStainless SteelPlainGrade 18-8€32.6850
DU51096.019.0001#10-241/8"3/8"CoarseRight HandStainless SteelPlainGrade 18-8€10.3150
EU51096.100.00011"-87/8"1 1/2"CoarseRight HandStainless SteelPlainGrade 18-8€92.721
FU51096.050.00011/2"-137/16"13/16"CoarseRight HandStainless SteelPlainGrade 18-8€23.7910
GU51096.025.00011/4"-207/32"7/16"CoarseRight HandStainless SteelPlainGrade 18-8€11.0325
HU51096.075.00013/4"-1021/32"1 1/8"CoarseRight HandStainless SteelPlainGrade 18-8€149.735
IU51096.037.00013/8"-1621/64"5/8"CoarseRight HandStainless SteelPlainGrade 18-8€34.6625
JU51096.062.00015/8"-1135/64"1"CoarseRight HandStainless SteelPlainGrade 18-8€138.215
KU51096.031.00015/16"-1817/64"9/16"CoarseRight HandStainless SteelPlainGrade 18-8€12.7725
LU51096.087.00017/8"-949/64"1 5/16"CoarseRight HandStainless SteelPlainGrade 18-8€92.971
MU51096.043.00017/16"-143/8"3/4"CoarseRight HandStainless SteelPlainGrade 18-8€53.6525
GRAINGER -

Square Nut, 7/16 In - 14 Thread Size, Zn Plated, 25/64 In Square Ht., 3/4 In Square Wd., 100PK

ModelItemPrice (ex. VAT)Pkg. Qty.
SQNI20430-100BXCQ6AXG€33.23
100
GRAINGER -

Square Nut, 3/4 In - 10 Thread Size, Zn Plated, 11/16 In Square Ht., 1 1/8 In Square Wd., 20PK

ModelItemPrice (ex. VAT)Pkg. Qty.
SQNI20750-020BXCQ6AXA€28.06
20
GRAINGER -

Square Nut, 3/8 In - 16 Thread Size, Hot Dipped Galv, 11/32 In Square Ht., Not Gr., 100PK

ModelItemPrice (ex. VAT)Pkg. Qty.
SQNI2037G-100BXCQ6AXB€23.72
100
GRAINGER -

Square Nut, 3/8 In - 16 Thread Size, Zn Plated, 1/4 In Square Ht., 5/8 In Square Wd., Steel, 100PK

ModelItemPrice (ex. VAT)Pkg. Qty.
SQMSNI20370-100BXCQ6AXC€20.60
100
GRAINGER -

Square Nut, 3/8 In - 16 Thread Size, Zn Plated, 21/64 In Square Ht., 5/8 In Square Wd., 1250PK

ModelItemPrice (ex. VAT)Pkg. Qty.
SQMSNI20370-1250BXCQ6AXD€129.88
1250
GRAINGER -

Square Nut, 5/16 In - 18 Thread Size, Zn Plated, 7/32 In Square Ht., 9/16 In Square Wd., 100PK

ModelItemPrice (ex. VAT)Pkg. Qty.
SQMSNI20310-100BXCQ6AXE€14.41
100
GRAINGER -

Square Nut, 5/8 In - 11 Thread Size, Hot Dipped Galv, 9/16 In Square Ht., Not Gr., 25PK

ModelItemPrice (ex. VAT)Pkg. Qty.
SQNI2062G-025BXCQ6AXF€29.91
25
GRAINGER -

Square Nut, 7/16 In - 14 Thread Size, Zn Plated, 3/4 In Square Ht., Not Gr., Steel, 1800PK

ModelItemPrice (ex. VAT)Pkg. Qty.
SQNI20430-1800BXCQ6AXH€377.74
1800
GRAINGER -

Square Nut, 1/4 In - 20 Thread Size, Zn Plated, 15/64 In Square Ht., 7/16 In Square Wd., 100PK

ModelItemPrice (ex. VAT)Pkg. Qty.
SQNI20250-100BXCQ6AWY€10.23
100
GRAINGER -

Square Nut, 5/16 In - 18 Thread Size, Hot Dipped Galv, 9/32 In Square Ht., Not Gr., 100PK

ModelItemPrice (ex. VAT)Pkg. Qty.
SQNI2031G-100BXCQ6AXJ€23.14
100
GRAINGER -

Square Nut, 3/8 In - 16 Thread Size, Zn Plated, 11/32 In Square Ht., 5/8 In Square Wd., 100PK

ModelItemPrice (ex. VAT)Pkg. Qty.
SQNI20370-100BXCQ6AXK€32.71
100
12

Square Nuts

Square nuts are four-sided nuts designed for use with a square head bolt & flat washer. They have a large surface in contact with the part being fastened and therefore, offer superior resistance to loosening. Raptor Supplies offers these square nuts from brands like Grainger, Dynaform, Fabory, Super-Strut and Unistrut.

Frequently Asked Questions

How do you know if a nut is left or right handed?

Nut handedness describes the way a nut's thread wrap around a shaft. Left-handed threads run counterclockwise, and right-handed threads run clockwise.

What are the benefits of using a square nut?

  • Easy to Tighten: They feature a four-sided shape for easy tightening. These nuts grip two opposite sides of the fasteners to tighten or loosen them.
  • Quick Gauge: They provide a quick visual gauge for easy checks and decreasing the risk of fastener failure.
  • Perfect for Blind / Tight Locations: They can be tightened using a wrench or pliers for use in blind locations. Users can tighten or loosen a square-shaped fastener without looking at it, once grip is obtained.

What are the differences between hex nuts and square nuts??

  • Hex nuts are easier to install and tighten than square nuts as they have more sides to provide more torque.
  • Square nuts need more space as they require wrench movement in a 90-degree range. On the other hand, hex nuts can be installed in smaller spaces as they require only 60-degree wrench movement.
  • Square nuts provide better protection against accidental loosening as compared to hex nuts. Square nuts usually cover a larger surface area to press against the object, thereby preventing their loosening.