Slotted hex nuts, lock nuts

**Hex Slotted Nuts - ANSI / ASME B18.2.2**
Nominal Size or Basic Major Thread Diameter	F	G	H	T	S	Runout of Bearing Surface FIM
Width Across Flats	Width Across Corners	Thickness	Unslotted Thickness	Slot Width
Basic	Max	Min	Max	Min	Basic	Max	Min	Max	Min	Max	Min	Max
1/4	.250	7/16	.438	.428	.505	.488	7/32	.226	.212	.14	.12	.10	.07	.015
5/16	.3125	1/2	.500	.489	.577	.557	17/64	.273	.258	.18	.16	.12	.09	.016
3/8	.3750	9/16	.562	.551	.650	.628	21/64	.337	.320	.21	.19	.15	.12	.018
7/16	.4375	11/16	.688	.675	.794	.768	3/8	.385	.365	.23	.21	.15	.12	.018
1/2	.5000	3/4	.750	.736	.866	.840	7/16	.448	.427	.29	.27	.18	.15	.019
9/16	.5625	7/8	.875	.861	1.010	.982	31/64	.496	.473	.31	.29	.18	.15	.020
5/8	.6250	15/16	.938	.922	1.083	1.051	35/64	.559	.535	.34	.32	.24	.18	.021
3/4	.7500	1-1/8	1.125	1.088	1.299	1.240	41/64	.665	.617	.40	.38	.24	.18	.023
7/8	.8750	1-5/16	1.312	1.269	1.516	1.447	3/4	.776	.724	.52	.49	.24	.18	.025
1	1.0000	1-1/2	1.500	1.450	1.732	1.653	55/64	.887	.831	.59	.56	.30	.24	.027
1-1/8	1.1250	1-11/16	1.688	1.631	1.949	1.859	31/32	.999	.939	.64	.61	.33	.24	.030
1-1/4	1.2500	1-7/8	1.875	1.812	2.165	2.066	1-1/16	1.094	1.030	.70	.67	.40	.31	.033
1-1/2	1.5000	2-1/4	2.250	2.175	2.598	2.480	1-9/32	1.317	1.245	.86	.82	.46	.37	.039

Hex Slotted Nuts - ANSI / ASME B18.2.2

Nominal Size or
Basic Major
Thread Diameter

Runout
of
Bearing
Surface
FIM

Width
Across Flats

Width
Across
Corners

Thickness

Unslotted
Thickness

Slot
Width

Basic

Max

Min

Max

Min

Basic

Max

Min

Max

Min

Max

Min

Max

1/4

.250

7/16

.438

.428

.505

.488

7/32

.226

.212

.14

.12

.10

.07

.015

5/16

.3125

1/2

.500

.489

.577

.557

17/64

.273

.258

.18

.16

.12

.09

.016

3/8

.3750

9/16

.562

.551

.650

.628

21/64

.337

.320

.21

.19

.15

.12

.018

7/16

.4375

11/16

.688

.675

.794

.768

3/8

.385

.365

.23

.21

.15

.12

.018

1/2

.5000

3/4

.750

.736

.866

.840

7/16

.448

.427

.29

.27

.18

.15

.019

9/16

.5625

7/8

.875

.861

1.010

.982

31/64

.496

.473

.31

.29

.18

.15

.020

5/8

.6250

15/16

.938

.922

1.083

1.051

35/64

.559

.535

.34

.32

.24

.18

.021

3/4

.7500

1-1/8

1.125

1.088

1.299

1.240

41/64

.665

.617

.40

.38

.24

.18

.023

7/8

.8750

1-5/16

1.312

1.269

1.516

1.447

3/4

.776

.724

.52

.49

.24

.18

.025

1.0000

1-1/2

1.500

1.450

1.732

1.653

55/64

.887

.831

.59

.56

.30

.24

.027

1-1/8

1.1250

1-11/16

1.688

1.631

1.949

1.859

31/32

.999

.939

.64

.61

.33

.24

.030

1-1/4

1.2500

1-7/8

1.875

1.812

2.165

2.066

1-1/16

1.094

1.030

.70

.67

.40

.31

.033

1-1/2

1.5000

2-1/4

2.250

2.175

2.598

2.480

1-9/32

1.317

1.245

.86

.82

.46

.37

.039

**Slotted Hex Nut Lock Nuts Properties - ANSI / ASME B18.2.2**
Description	A hex nut with opposed slots cut into the top of the nut through the centers of the flats. The slots are on the end opposite the bearing surface.
Applications & Advantages	The slots are for the insertion of a cotter pin to secure the nut when used with a drilled shank fastener. Commonly used in the automotive industry to secure front wheel bearings / wheel hubs to spindles on cars and trucks.
Material	Nuts shall be made from a low carbon steel which conforms to the following chemical composition requirements: Carbon: .47% max Phosphorus: .12% max Sulfur: .23% max
Hardness	Rockwell C32 maximum
Proof Load	72,000 psi
Plating	See plating page for more information.

Slotted Hex Nut Lock Nuts Properties - ANSI / ASME B18.2.2

Description

A hex nut with opposed slots cut into the top of the nut through the centers of the flats. The slots are on the end opposite the bearing surface.

Applications
& Advantages

The slots are for the insertion of a cotter pin to secure the nut when used with a drilled shank fastener. Commonly used in the automotive industry to secure front wheel bearings / wheel hubs to spindles on cars and trucks.

Material

Nuts shall be made from a low carbon steel which conforms to the following chemical composition requirements:
Carbon: .47% max Phosphorus: .12% max Sulfur: .23% max

Hardness

Rockwell C32 maximum

Proof Load

72,000 psi

Plating

See plating page for more information.

For a more comprehensive list of lock nuts check out our Nuts List

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Smith Fastener Company, A California Corporation - 3613 East Florence Avenue, Bell, California, 90201 - Phone: ( 323 ) 587-0382 - FAX: ( 323 ) 587-8712 - E-mail: sales@smithfast.com - Copyright © 2000 by Smith Fastener Company - Last updated: May 22nd, 2006 - http://www.smithfast.com/hexslottednuts.html