.hide-partial { max-height: none; } .show-more { display: none; }

4-40 Hardware

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Hardware

List Images

Results: 2.927

Applied Filters:

Thread Size = 4-40

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Standoffs & Spacers RND .187X.250 ALUM

2025
Keystone Electronics
1: Rp9.723
3.300In Stock

Mfr. Part No.
2025

Mouser Part No
534-2025

Keystone Electronics

Standoffs & Spacers RND .187X.250 ALUM

Learn More

Datasheet

3.300In Stock

Rp9.723

Rp7.320

Rp6.531

Rp5.540

View

Min.: 1
Mult.: 1

Standoffs & Spacers RND .187X.375 ALUM

2026
Keystone Electronics
1: Rp6.605
2.366In Stock

Mfr. Part No.
2026

Mouser Part No
534-2026

Keystone Electronics

Standoffs & Spacers RND .187X.375 ALUM

Learn More

Datasheet

2.366In Stock

Rp6.605

Rp5.082

Rp4.898

Rp4.110

View

Min.: 1
Mult.: 1

Standoffs & Spacers RND .187X.875 ALUM

2030
Keystone Electronics
1: Rp16.878
358In Stock

Mfr. Part No.
2030

Mouser Part No
534-2030

Keystone Electronics

Standoffs & Spacers RND .187X.875 ALUM

Learn More

Datasheet

358In Stock

Rp16.878

Rp12.640

Rp11.319

Rp10.641

View

Min.: 1
Mult.: 1

Standoffs & Spacers RND .187X1.00 ALUM

2031
Keystone Electronics
1: Rp19.263
98In Stock

Mfr. Part No.
2031

Mouser Part No
534-2031

Keystone Electronics

Standoffs & Spacers RND .187X1.00 ALUM

Learn More

Datasheet

98In Stock

Rp19.263

Rp14.879

Rp8.678

Rp7.870

Rp7.320

Min.: 1
Mult.: 1

Mounting Fixings BOWTIE RTNG CLIP

2061
Keystone Electronics
1: Rp18.896
131In Stock

Mfr. Part No.
2061

Mouser Part No
534-2061

Keystone Electronics

Mounting Fixings BOWTIE RTNG CLIP

Datasheet

131In Stock

Rp18.896

Rp14.879

Rp14.126

Rp12.640

View

Min.: 1
Mult.: 1

Screws & Fasteners JK. SCREW TURNABLE

2065
Keystone Electronics
1: Rp54.855
218In Stock
360Expected 21/09/2026

Mfr. Part No.
2065

Mouser Part No
534-2065

Keystone Electronics

Screws & Fasteners JK. SCREW TURNABLE

Datasheet

218In Stock

360Expected 21/09/2026

Rp54.855

Rp44.397

Rp42.563

Rp41.462

View

Min.: 1
Mult.: 1

Screws & Fasteners 1.76"LONG JACK SCREW

2068
Keystone Electronics
1: Rp53.937
93In Stock

Mfr. Part No.
2068

Mouser Part No
534-2068

Keystone Electronics

Screws & Fasteners 1.76"LONG JACK SCREW

Datasheet

93In Stock

Rp53.937

Rp42.746

Rp40.728

Rp40.545

View

Min.: 1
Mult.: 1

Screws & Fasteners TURNABLE JACK SCREW

2071
Keystone Electronics
1: Rp75.769
920In Stock
1.220Expected 05/10/2026

Mfr. Part No.
2071

Mouser Part No
534-2071

Keystone Electronics

Screws & Fasteners TURNABLE JACK SCREW

Datasheet

920In Stock

1.220Expected 05/10/2026

Rp75.769

Rp63.661

Rp61.826

Rp59.808

View

Min.: 1
Mult.: 1

Standoffs & Spacers SS .375 M/F THRD

2087
Keystone Electronics
1: Rp19.080
1.142In Stock

Mfr. Part No.
2087

Mouser Part No
534-2087

Keystone Electronics

Standoffs & Spacers SS .375 M/F THRD

Learn More

Datasheet

1.142In Stock

Rp19.080

Rp13.888

Rp7.614

Rp7.338

Min.: 1
Mult.: 1

Standoffs & Spacers SS .875 M/F THRD

2091
Keystone Electronics
1: Rp33.390
880In Stock

Mfr. Part No.
2091

Mouser Part No
534-2091

Keystone Electronics

Standoffs & Spacers SS .875 M/F THRD

Learn More

Datasheet

880In Stock

Rp33.390

Rp25.317

Rp24.767

Rp15.227

Min.: 1
Mult.: 1

Standoffs & Spacers SS 1.500 M/F THRD

2096
Keystone Electronics
1: Rp61.276
279In Stock

Mfr. Part No.
2096

Mouser Part No
534-2096

Keystone Electronics

Standoffs & Spacers SS 1.500 M/F THRD

Learn More

Datasheet

279In Stock

Rp61.276

Rp51.002

Rp49.534

Rp47.700

View

Min.: 1
Mult.: 1

Screws & Fasteners SOCKET HEAD SCREW

21405
Keystone Electronics
1: Rp58.707
43In Stock

Mfr. Part No.
21405

Mouser Part No
534-21405

Keystone Electronics

Screws & Fasteners SOCKET HEAD SCREW

Learn More

Datasheet

43In Stock

Rp58.707

Rp45.498

Rp44.030

Rp41.829

View

Min.: 1
Mult.: 1

Screws & Fasteners SOCKET HEAD SCREW

21412
Keystone Electronics
1: Rp64.578
55In Stock

Mfr. Part No.
21412

Mouser Part No
534-21412

Keystone Electronics

Screws & Fasteners SOCKET HEAD SCREW

Learn More

Datasheet

55In Stock

Rp64.578

Rp51.369

Rp49.534

Rp46.048

View

Min.: 1
Mult.: 1

Standoffs & Spacers HEX .250X1.00 ALUM

2205
Keystone Electronics
1: Rp13.760
1.001In Stock
10.000Expected 24/08/2026

Mfr. Part No.
2205

Mouser Part No
534-2205

Keystone Electronics

Standoffs & Spacers HEX .250X1.00 ALUM

Learn More

Datasheet

1.001In Stock

10.000Expected 24/08/2026

Rp13.760

Rp11.558

Rp10.971

Rp9.815

View

Min.: 1
Mult.: 1

Screws & Fasteners THUMB SCREW 6-32 .5"

2407
Keystone Electronics
1: Rp40.912
438In Stock

Mfr. Part No.
2407

Mouser Part No
534-2407

Keystone Electronics

Screws & Fasteners THUMB SCREW 6-32 .5"

Datasheet

438In Stock

Rp40.912

Rp32.839

Rp32.106

Rp31.372

View

Min.: 1
Mult.: 1

Screws & Fasteners CAPTIVE SCREW

2414
Keystone Electronics
1: Rp71.549
22In Stock

Mfr. Part No.
2414

Mouser Part No
534-2414

Keystone Electronics

Screws & Fasteners CAPTIVE SCREW

Datasheet

22In Stock

Rp71.549

Rp54.304

Rp49.718

Rp42.563

View

Min.: 1
Mult.: 1

Screws & Fasteners 4-40 .125 SHLDR SCW

2421
Keystone Electronics
1: Rp32.472
458In Stock

Mfr. Part No.
2421

Mouser Part No
534-2421

Keystone Electronics

Screws & Fasteners 4-40 .125 SHLDR SCW

Datasheet

458In Stock

Rp32.472

Rp26.051

Rp25.317

Rp24.767

View

Min.: 1
Mult.: 1

Screws & Fasteners 4-40 .250 SHLDR SCW

2422
Keystone Electronics
1: Rp19.814
499In Stock

Mfr. Part No.
2422

Mouser Part No
534-2422

Keystone Electronics

Screws & Fasteners 4-40 .250 SHLDR SCW

Datasheet

499In Stock

Rp19.814

Rp15.686

Rp14.879

Rp13.319

View

Min.: 1
Mult.: 1

Screws & Fasteners 4-40 .125 SHLDR SOCK

2441
Keystone Electronics
1: Rp32.106
221In Stock

Mfr. Part No.
2441

Mouser Part No
534-2441

Keystone Electronics

Screws & Fasteners 4-40 .125 SHLDR SOCK

Datasheet

221In Stock

Rp32.106

Rp24.400

Rp21.832

Rp19.447

Rp14.493

Min.: 1
Mult.: 1

Screws & Fasteners NYLON KNURL HEAD THUMB SCREW

2500
Keystone Electronics
1: Rp7.522
726In Stock

Mfr. Part No.
2500

Mouser Part No
534-2500

Keystone Electronics

Screws & Fasteners NYLON KNURL HEAD THUMB SCREW

Datasheet

726In Stock

Rp7.522

Rp5.632

Rp5.027

Rp4.256

View

Min.: 1
Mult.: 1

Standoffs & Spacers RND .250X.250 ALUM

3478
Keystone Electronics
1: Rp8.256
2.211In Stock

Mfr. Part No.
3478

Mouser Part No
534-3478

Keystone Electronics

Standoffs & Spacers RND .250X.250 ALUM

Learn More

Datasheet

2.211In Stock

Rp8.256

Rp6.256

Rp5.577

Rp4.733

View

Min.: 1
Mult.: 1

Standoffs & Spacers RND .250X1.50 ALUM

3483
Keystone Electronics
1: Rp27.519
778In Stock

Mfr. Part No.
3483

Mouser Part No
534-3483

Keystone Electronics

Standoffs & Spacers RND .250X1.50 ALUM

Learn More

Datasheet

778In Stock

Rp27.519

Rp22.382

Rp12.604

Rp11.430

Rp10.641

Min.: 1
Mult.: 1

Standoffs & Spacers 4/40 STANDOFF

352
Keystone Electronics
1: Rp48.617
139In Stock

Mfr. Part No.
352

Mouser Part No
534-352

Keystone Electronics

Standoffs & Spacers 4/40 STANDOFF

Datasheet

139In Stock

Rp48.617

Rp39.994

Rp38.710

Rp32.289

View

Min.: 1
Mult.: 1

Screws & Fasteners 4-40 NUT

4694
Keystone Electronics
1: Rp1.835
12.060In Stock

Mfr. Part No.
4694

Mouser Part No
534-4694

Keystone Electronics

Screws & Fasteners 4-40 NUT

Datasheet

12.060In Stock

Rp1.835

Rp1.266

Rp1.137

Rp954

View

Min.: 1
Mult.: 1

Standoffs & Spacers M-F NYLN HEX 6X.50"

4799
Keystone Electronics
1: Rp12.842
395In Stock

Mfr. Part No.
4799

Mouser Part No
534-4799

Keystone Electronics

Standoffs & Spacers M-F NYLN HEX 6X.50"

Learn More

Datasheet

395In Stock

Rp12.842

Rp9.723

Rp8.843

Rp7.504

View

Min.: 1
Mult.: 1

4-40 Hardware

Types of Hardware

Customer Service Office

Company

Resources

Support