Machine Screw Nuts

Machine Screw Nuts

Machine Screw Nuts are available in steel with a zinc, black oxide, black zinc, or yellow zinc finish; as well as in 18-8 stainless steel in a plain or black oxide finish; and in 316 stainless steel.
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Product Details

Name: Machine Screw Nuts


Descriptions: Machine Screw Nuts are available in steel with a zinc, black oxide, black zinc, or yellow zinc finish; as well as in 18-8 stainless steel in a plain or black oxide finish; and in 316 stainless steel. Designed for use with machine screws, machine screw nuts are also available in small pattern and square styles. They are thinner than finished hex nuts.

Material: stell and stainless steel 18-8 and A4


SQUARE AND HEX MACHINE SCREW NUTS ANSI/ASME B18.6.3

Nominal Size or Basic
Thread Diameter

F

G

G1

H

Width Across Flats

Width Across Corners

Thickness

Square

Hex

Basic

Max

Min

Max

Min

Max

Min

Max

Min

0

0.0600

5/32

0.156

0.150

0.221

0.206

0.180

0.171

0.050

0.043

1

0.0730

5/32

0.156

0.150

0.221

0.206

0.180

0.171

0.050

0.043

2

0.0860

3/16

0.188

0.180

0.265

0.247

0.217

0.205

0.066

0.057

3

0.0990

3/16

0.188

0.180

0.265

0.247

0.217

0.205

0.066

0.057

4

0.1120

1/4

0.250

0.241

0.354

0.331

0.289

0.275

0.098

0.087

5

0.1250

5/16

0.312

0.302

0.442

0.415

0.361

0.344

0.114

0.102

6

0.1380

5/16

0.312

0.302

0.442

0.415

0.361

0.344

0.114

0.102

8

0.1640

11/32

0.344

0.332

0.486

0.456

0.397

0.378

0.130

0.117

10

0.1900

3/8

0.375

0.362

0.530

0.497

0.433

0.413

0.130

0.117

12

0.2160

7/16

0.438

0.423

0.619

0.581

0.505

0.482

0.161

0.148

1/4

0.2500

7/16

0.438

0.423

0.619

0.581

0.505

0.482

0.193

0.178

5/16

0.3125

9/16

0.562

0.545

0.795

0.748

0.650

0.621

0.225

0.208

3/8

0.3750

5/8

0.625

0.607

0.884

0.833

0.722

0.692

0.257

0.239


Description

Hex Machine Screw Nut: A six-sided internally threaded fastener with flat tops and chamfered corners. Threads shall be Unified Standard, Class 2B.

Square Machine Screw Nut: A four-sided, internally threaded fastener, tops and bottoms flat, without chamfer. Threads shall be Unified coarse thread, Class 2B.

Applications/

Advantages

Hex Machine Screw Nut: Designed to be used specifically with machine screws. Stainless nuts are used with stainless machine screws where parts are subject to corrosive conditions.

Square Machine Screw Nut: Offers a greater bearing surface for wrenching.

Material

Steel: Any low carbon steel

Stainless: 18-8 stainless steel


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