Home / UNC Bolts, Nuts and Washers / UNC Socket Head Cap Screws ASME B18.3 in A4 Stainless Steel

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UNC Socket Head Cap Screws ASME B18.3 in A4 Stainless Steel

Also known as an Allen screw or Allen bolt, or simply a cap screw, socket head cap screws are a more modern alternative standard machine fastener to the standard hexagon headed bolt or setscrew, as found on much modern machinery. A hex key (otherwise known as an Allen key) is required to fit these fasteners. Conforming to ASME/ANSI B18.3, the contact surfaces of this screw or bolt are protected from external damage. Generally manufactured with a partial thread beyond a certain length and nominal diameter combination, but occasionally some stock may include a fully threaded shank.

Image of UNC Socket Head Cap Screws ASME B18.3 in A4 image

Material Selection

BZP

technical drawing of UNC Socket Head Cap Screws ASME B18.3

Technical Summary

Standard

ASME B18.3

all dimensions in inches

Datasheet

< View All UNC Bolts, Nuts and Washers

Description	Sale Qtys	Qty	Price	Breakdown	Despatch Estimate
Socket Head Cap (Allen) Screw UNC 4-40 x 3/8 inch in A4 Stainless WF73860			£0.00
6-32 x 1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33705			£0.00
6-32 x 3/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33706			£0.00
6-32 x 1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33707			£0.00
6-32 x 5/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33708			£0.00
6-32 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33709			£0.00
6-32 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33710			£0.00
8-32 x 3/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33711			£0.00
8-32 x 1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33712			£0.00
8-32 x 5/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33713			£0.00
8-32 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33714			£0.00
8-32 x 7/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF76878			£0.00
8-32 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33715			£0.00
Socket Head Cap (Allen) Screw UNC 10-24 x 1/4 inch in A4 Stainless WF14345			£0.00
10-24 x 3/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33716			£0.00
10-24 x 1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33717			£0.00
10-24 x 5/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33718			£0.00
10-24 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33719			£0.00
10-24 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33720			£0.00
1/4 x 3/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33726			£0.00
1/4 x 1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33727			£0.00
1/4 x 5/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33728			£0.00
1/4 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33729			£0.00
1/4 x 7/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33772			£0.00
1/4 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33730			£0.00
1/4 x 1-1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33731			£0.00
1/4 x 1-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33732			£0.00
1/4 x 1-3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33733			£0.00
1/4 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33734			£0.00
Socket Head Cap (Allen) Screw UNC 1/4 x 2-1/2 inch in A4 Stainless WF77078			£0.00
Socket Head Cap (Allen) Screw UNC 1/4 x 3 inch in A4 Stainless WF34689			£0.00
5/16 x 1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33735			£0.00
5/16 x 5/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33736			£0.00
5/16 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33737			£0.00
5/16 x 7/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33738			£0.00
5/16 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33739			£0.00
5/16 x 1-1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33740			£0.00
5/16 x 1-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33741			£0.00
5/16 x 1-3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33742			£0.00
5/16 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33743			£0.00
5/16 x 2-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33744			£0.00
Socket Head Cap (Allen) Screw UNC 5/16 x 3 inch in A4 Stainless WF34691			£0.00
5/16 x 3-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF85382			£0.00
Socket Head Cap (Allen) Screw UNC 5/16 x 5 inch in A4 Stainless WF75622			£0.00
3/8 x 1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33745			£0.00
3/8 x 5/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33746			£0.00
3/8 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33747			£0.00
Socket Head Cap (Allen) Screw UNC 3/8 x 7/8 inch in A4 Stainless WF62031			£0.00
3/8 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33748			£0.00
3/8 x 1-1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33749			£0.00
3/8 x 1-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33750			£0.00
3/8 x 1-3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33751			£0.00
3/8 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33752			£0.00
Socket Head Cap (Allen) Screw UNC 3/8 x 2-1/4 inch in A4 Stainless WF61527			£0.00
3/8 x 2-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33753			£0.00
Socket Head Cap (Allen) Screw UNC 3/8 x 3 inch in A4 Stainless WF14357			£0.00
Socket Head Cap (Allen) Screw UNC 3/8 x 44inch in A4 Stainless WF66216			£0.00
Socket Head Cap (Allen) Screw UNC 7/16 x 1 inch in A4 Stainless WF77080			£0.00
1/2 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33754			£0.00
1/2 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33755			£0.00
1/2 x 1-1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33756			£0.00
1/2 x 1-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33757			£0.00
1/2 x 1-3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33758			£0.00
1/2 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33759			£0.00
1/2 x 2-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33760			£0.00
Socket Head Cap (Allen) Screw UNC 1/2 x 2-3/4 inch in A4 Stainless WF75624			£0.00
1/2 x 3 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33761			£0.00
Socket Head Cap (Allen) Screw UNC 1/2 x 4 inch in A4 Stainless WF66218			£0.00
1/2 x 4-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF84623			£0.00
Socket Head Cap (Allen) Screw UNC 1/2 x 5 inch in A4 Stainless WF73614			£0.00
Socket Head Cap (Allen) Screw UNC 1/2 x 6 inch in A4 Stainless WF66220			£0.00
5/8 x 1-1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33762			£0.00
5/8 x 1-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33763			£0.00
5/8 x 1-3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33764			£0.00
5/8 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33765			£0.00
5/8 x 2-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33766			£0.00
5/8 x 3 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33767			£0.00
Socket Head Cap (Allen) Screw UNC 5/8 x 3-1/2 inch in A4 Stainless WF73456			£0.00
Socket Head Cap (Allen) Screw UNC 5/8 x 5 inch in A4 Stainless WF70123			£0.00
Socket Head Cap (Allen) Screw UNC 3/4 x 1-1/2 inch in A4 Stainless WF75825			£0.00
3/4 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33768			£0.00
3/4 x 2-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33769			£0.00
3/4 x 3 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33770			£0.00
Socket Head Cap (Allen) Screw UNC 3/4 x 3-1/2 inch in A4 Stainless WF61394			£0.00
3/4 x 4 UNC Socket Head Cap (Allen) Screw in A4 Stainless WF33771			£0.00
Socket Head Cap (Allen) Screw UNC 7/8 x 2 inch in A4 Stainless WF59657			£0.00
Socket Head Cap (Allen) Screw UNC 7/8 x 4 inch in A4 Stainless WF59669			£0.00
Socket Head Cap (Allen) Screw UNC 1 x 2 inch in A4 Stainless WF76874			£0.00
Socket Head Cap (Allen) Screw UNC 1 x 4 inch in A4 Stainless WF85926			£0.00

Socket Head Cap (Allen) Screw UNC 4-40 x 3/8 inch in A4 Stainless
WF73860

6-32 x 1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33705

6-32 x 3/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33706

6-32 x 1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33707

6-32 x 5/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33708

6-32 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33709

6-32 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33710

8-32 x 3/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33711

8-32 x 1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33712

8-32 x 5/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33713

8-32 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33714

8-32 x 7/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF76878

8-32 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33715

Socket Head Cap (Allen) Screw UNC 10-24 x 1/4 inch in A4 Stainless
WF14345

10-24 x 3/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33716

10-24 x 1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33717

10-24 x 5/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33718

10-24 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33719

10-24 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33720

1/4 x 3/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33726

1/4 x 1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33727

1/4 x 5/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33728

1/4 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33729

1/4 x 7/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33772

1/4 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33730

1/4 x 1-1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33731

1/4 x 1-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33732

1/4 x 1-3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33733

1/4 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33734

Socket Head Cap (Allen) Screw UNC 1/4 x 2-1/2 inch in A4 Stainless
WF77078

Socket Head Cap (Allen) Screw UNC 1/4 x 3 inch in A4 Stainless
WF34689

5/16 x 1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33735

5/16 x 5/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33736

5/16 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33737

5/16 x 7/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33738

5/16 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33739

5/16 x 1-1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33740

5/16 x 1-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33741

5/16 x 1-3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33742

5/16 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33743

5/16 x 2-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33744

Socket Head Cap (Allen) Screw UNC 5/16 x 3 inch in A4 Stainless
WF34691

5/16 x 3-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF85382

Socket Head Cap (Allen) Screw UNC 5/16 x 5 inch in A4 Stainless
WF75622

3/8 x 1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33745

3/8 x 5/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33746

3/8 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33747

Socket Head Cap (Allen) Screw UNC 3/8 x 7/8 inch in A4 Stainless
WF62031

3/8 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33748

3/8 x 1-1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33749

3/8 x 1-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33750

3/8 x 1-3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33751

3/8 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33752

Socket Head Cap (Allen) Screw UNC 3/8 x 2-1/4 inch in A4 Stainless
WF61527

3/8 x 2-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33753

Socket Head Cap (Allen) Screw UNC 3/8 x 3 inch in A4 Stainless
WF14357

Socket Head Cap (Allen) Screw UNC 3/8 x 44inch in A4 Stainless
WF66216

Socket Head Cap (Allen) Screw UNC 7/16 x 1 inch in A4 Stainless
WF77080

1/2 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33754

1/2 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33755

1/2 x 1-1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33756

1/2 x 1-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33757

1/2 x 1-3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33758

1/2 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33759

1/2 x 2-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33760

Socket Head Cap (Allen) Screw UNC 1/2 x 2-3/4 inch in A4 Stainless
WF75624

1/2 x 3 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33761

Socket Head Cap (Allen) Screw UNC 1/2 x 4 inch in A4 Stainless
WF66218

1/2 x 4-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF84623

Socket Head Cap (Allen) Screw UNC 1/2 x 5 inch in A4 Stainless
WF73614

Socket Head Cap (Allen) Screw UNC 1/2 x 6 inch in A4 Stainless
WF66220

5/8 x 1-1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33762

5/8 x 1-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33763

5/8 x 1-3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33764

5/8 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33765

5/8 x 2-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33766

5/8 x 3 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33767

Socket Head Cap (Allen) Screw UNC 5/8 x 3-1/2 inch in A4 Stainless
WF73456

Socket Head Cap (Allen) Screw UNC 5/8 x 5 inch in A4 Stainless
WF70123

Socket Head Cap (Allen) Screw UNC 3/4 x 1-1/2 inch in A4 Stainless
WF75825

3/4 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33768

3/4 x 2-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33769

3/4 x 3 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33770

Socket Head Cap (Allen) Screw UNC 3/4 x 3-1/2 inch in A4 Stainless
WF61394

3/4 x 4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33771

Socket Head Cap (Allen) Screw UNC 7/8 x 2 inch in A4 Stainless
WF59657

Socket Head Cap (Allen) Screw UNC 7/8 x 4 inch in A4 Stainless
WF59669

Socket Head Cap (Allen) Screw UNC 1 x 2 inch in A4 Stainless
WF76874

Socket Head Cap (Allen) Screw UNC 1 x 4 inch in A4 Stainless
WF85926

Prices are subject to quantity discounts based on a sliding scale. Enter the desired quantity in the relevant box in the table above. This will automatically calculate a line price indicating the applicable rate for the quantities selected. All prices shown exclude VAT.

Technical Summary

Standard

ASME B18.3

all dimensions in inches

Datasheet

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