Plain Steel Washer ASTM F844

ASME B18.21.1 (Current)

Material: Carbon Steel
Finish: Zinc Plated, Hot Dip Galvanized, Plain
Size range: 1/4N–7/8W

Select sizes and quantities — 18 confirmed sizes to ASME B18.21.1

Material

Finish

Find a size

dNominal Diameter (in)	d1Inner Diameter (in)	d2Outer Diameter (in)	hWasher Thickness (in)	Washer Series	dBasic Major Diameter (in)	MOQ
1/4 N	0.281	0.625	0.065	N	0.25	5000
1/4 W	0.312	0.734	0.065	W	0.25	5000
5/16 N	0.344	0.688	0.065	N	0.3125	5000
5/16 W	0.375	0.875	0.083	W	0.3125	5000
3/8 N	0.406	0.812	0.065	N	0.375	5000
3/8 W	0.438	1	0.083	W	0.375	5000
7/16 N	0.469	0.922	0.065	N	0.4375	3000
7/16 W	0.5	1.25	0.083	W	0.4375	3000
1/2 N	0.531	1.062	0.095	N	0.5	3000
1/2 W	0.562	1.375	0.109	W	0.5	3000
5/8 N	0.656	1.312	0.095	N	0.625	2000
5/8 W	0.688	1.75	0.134	W	0.625	2000
3/4 N	0.812	1.469	0.134	N	0.75	2000
3/4 W	0.812	2	0.148	W	0.75	2000
7/8 N	0.938	1.75	0.134	N	0.875	1000
7/8 W	0.938	2.25	0.165	W	0.875	1000

Showing 16 of 18 sizes

1/4 N × 0.281 × 0.625 × 0.065 × N × 0.25 × 0.015 × 0.005 × 0.015 × 0.005 × 0.08 × 0.051

dNominal Diameter (in)1/4 N

d1Inner Diameter (in)0.281

d2Outer Diameter (in)0.625

hWasher Thickness (in)0.065

Washer SeriesN

dBasic Major Diameter (in)0.25

MOQ5000

1/4 W × 0.312 × 0.734 × 0.065 × W × 0.25 × 0.015 × 0.005 × 0.015 × 0.007 × 0.08 × 0.051

dNominal Diameter (in)1/4 W

d1Inner Diameter (in)0.312

d2Outer Diameter (in)0.734

hWasher Thickness (in)0.065

Washer SeriesW

dBasic Major Diameter (in)0.25

MOQ5000

5/16 N × 0.344 × 0.688 × 0.065 × N × 0.3125 × 0.015 × 0.005 × 0.015 × 0.007 × 0.08 × 0.051

dNominal Diameter (in)5/16 N

d1Inner Diameter (in)0.344

d2Outer Diameter (in)0.688

hWasher Thickness (in)0.065

Washer SeriesN

dBasic Major Diameter (in)0.3125

MOQ5000

5/16 W × 0.375 × 0.875 × 0.083 × W × 0.3125 × 0.015 × 0.005 × 0.03 × 0.007 × 0.104 × 0.064

dNominal Diameter (in)5/16 W

d1Inner Diameter (in)0.375

d2Outer Diameter (in)0.875

hWasher Thickness (in)0.083

Washer SeriesW

dBasic Major Diameter (in)0.3125

MOQ5000

3/8 N × 0.406 × 0.812 × 0.065 × N × 0.375 × 0.015 × 0.005 × 0.015 × 0.007 × 0.08 × 0.051

dNominal Diameter (in)3/8 N

d1Inner Diameter (in)0.406

d2Outer Diameter (in)0.812

hWasher Thickness (in)0.065

Washer SeriesN

dBasic Major Diameter (in)0.375

MOQ5000

3/8 W × 0.438 × 1 × 0.083 × W × 0.375 × 0.015 × 0.005 × 0.03 × 0.007 × 0.104 × 0.064

dNominal Diameter (in)3/8 W

d1Inner Diameter (in)0.438

d2Outer Diameter (in)1

hWasher Thickness (in)0.083

Washer SeriesW

dBasic Major Diameter (in)0.375

MOQ5000

7/16 N × 0.469 × 0.922 × 0.065 × N × 0.4375 × 0.015 × 0.005 × 0.015 × 0.007 × 0.08 × 0.051

dNominal Diameter (in)7/16 N

d1Inner Diameter (in)0.469

d2Outer Diameter (in)0.922

hWasher Thickness (in)0.065

Washer SeriesN

dBasic Major Diameter (in)0.4375

MOQ3000

7/16 W × 0.5 × 1.25 × 0.083 × W × 0.4375 × 0.015 × 0.005 × 0.03 × 0.007 × 0.104 × 0.064

dNominal Diameter (in)7/16 W

d1Inner Diameter (in)0.5

d2Outer Diameter (in)1.25

hWasher Thickness (in)0.083

Washer SeriesW

dBasic Major Diameter (in)0.4375

MOQ3000

1/2 N × 0.531 × 1.062 × 0.095 × N × 0.5 × 0.015 × 0.005 × 0.03 × 0.007 × 0.121 × 0.074

dNominal Diameter (in)1/2 N

d1Inner Diameter (in)0.531

d2Outer Diameter (in)1.062

hWasher Thickness (in)0.095

Washer SeriesN

dBasic Major Diameter (in)0.5

MOQ3000

1/2 W × 0.562 × 1.375 × 0.109 × W × 0.5 × 0.015 × 0.005 × 0.03 × 0.007 × 0.132 × 0.086

dNominal Diameter (in)1/2 W

d1Inner Diameter (in)0.562

d2Outer Diameter (in)1.375

hWasher Thickness (in)0.109

Washer SeriesW

dBasic Major Diameter (in)0.5

MOQ3000

5/8 N × 0.656 × 1.312 × 0.095 × N × 0.625 × 0.03 × 0.007 × 0.03 × 0.007 × 0.121 × 0.074

dNominal Diameter (in)5/8 N

d1Inner Diameter (in)0.656

d2Outer Diameter (in)1.312

hWasher Thickness (in)0.095

Washer SeriesN

dBasic Major Diameter (in)0.625

MOQ2000

5/8 W × 0.688 × 1.75 × 0.134 × W × 0.625 × 0.03 × 0.007 × 0.03 × 0.007 × 0.16 × 0.108

dNominal Diameter (in)5/8 W

d1Inner Diameter (in)0.688

d2Outer Diameter (in)1.75

hWasher Thickness (in)0.134

Washer SeriesW

dBasic Major Diameter (in)0.625

MOQ2000

3/4 N × 0.812 × 1.469 × 0.134 × N × 0.75 × 0.03 × 0.007 × 0.03 × 0.007 × 0.16 × 0.108

dNominal Diameter (in)3/4 N

d1Inner Diameter (in)0.812

d2Outer Diameter (in)1.469

hWasher Thickness (in)0.134

Washer SeriesN

dBasic Major Diameter (in)0.75

MOQ2000

3/4 W × 0.812 × 2 × 0.148 × W × 0.75 × 0.03 × 0.007 × 0.03 × 0.007 × 0.177 × 0.122

dNominal Diameter (in)3/4 W

d1Inner Diameter (in)0.812

d2Outer Diameter (in)2

hWasher Thickness (in)0.148

Washer SeriesW

dBasic Major Diameter (in)0.75

MOQ2000

7/8 N × 0.938 × 1.75 × 0.134 × N × 0.875 × 0.03 × 0.007 × 0.03 × 0.007 × 0.16 × 0.108

dNominal Diameter (in)7/8 N

d1Inner Diameter (in)0.938

d2Outer Diameter (in)1.75

hWasher Thickness (in)0.134

Washer SeriesN

dBasic Major Diameter (in)0.875

MOQ1000

7/8 W × 0.938 × 2.25 × 0.165 × W × 0.875 × 0.03 × 0.007 × 0.03 × 0.007 × 0.192 × 0.136

dNominal Diameter (in)7/8 W

d1Inner Diameter (in)0.938

d2Outer Diameter (in)2.25

hWasher Thickness (in)0.165

Washer SeriesW

dBasic Major Diameter (in)0.875

MOQ1000

Product details

Description: Plain Steel Washer ASTM F844 is supplied to ASME B18.21.1. Confirmed supply covers Carbon Steel, Zinc Plated, Hot Dip Galvanized and more finish. Every combination in the specification table below is a combination we actually supply — the table is the authoritative list, not a catalogue extract. To receive a quotation, send the size, quantity, finish and any document requirement; mixed sizes in one order are welcome.
Features: Flat annular form with a plain bore · Spreads the bearing face of the head or nut · Inside and outside diameters fixed by ASME B18.21.1 · Carbon Steel options · Zinc Plated, Hot Dip Galvanized and more finish
Applications: Spreading the clamping load over a larger bearing area, Protecting the surface under the bolt head or nut, Taking up clearance in oversized holes

Order assurance

Confirmed for the quoted product and order.

Reports & inspection

Agreed in the quotation.

EN 10204 3.1 material certificate
Dimensional inspection report
Certificate of conformity
Mechanical test report
Chemical analysis report
Coating inspection report
Batch and lot traceability

Packaging & delivery

Options we supply.

Bulk carton packing
Small boxes with outer cartons
Palletized shipment
Fumigation-free pallets
Inner poly bags
Buyer branding and labels

Product questions

What sizes of Plain Steel Washer ASTM F844 do you supply?

Execution standard: ASME B18.21.1. The confirmed specification table covers 1–7 diameters. Use the specification table to select the exact variant required for quotation.

Which materials, grades and finishes can I order?

Material: Carbon Steel; Finish: Zinc Plated, Hot Dip Galvanized, Plain. Availability should be confirmed against the selected specification and order quantity.

Where are these washers typically used?

Typical applications include Spreading the clamping load over a larger bearing area, Protecting the surface under the bolt head or nut, Taking up clearance in oversized holes. Final suitability depends on the selected material, grade, finish and operating conditions.

Quote Plain Steel Washer ASTM F844

Add sizes, quantities, destination and any drawing or spreadsheet.

WhatsApp Send RFQ

Plain Steel Washer ASTM F844

Select sizes and quantities — 18 confirmed sizes to ASME B18.21.1

1/4 N × 0.281 × 0.625 × 0.065 × N × 0.25 × 0.015 × 0.005 × 0.015 × 0.005 × 0.08 × 0.051

1/4 W × 0.312 × 0.734 × 0.065 × W × 0.25 × 0.015 × 0.005 × 0.015 × 0.007 × 0.08 × 0.051

5/16 N × 0.344 × 0.688 × 0.065 × N × 0.3125 × 0.015 × 0.005 × 0.015 × 0.007 × 0.08 × 0.051

5/16 W × 0.375 × 0.875 × 0.083 × W × 0.3125 × 0.015 × 0.005 × 0.03 × 0.007 × 0.104 × 0.064

3/8 N × 0.406 × 0.812 × 0.065 × N × 0.375 × 0.015 × 0.005 × 0.015 × 0.007 × 0.08 × 0.051

3/8 W × 0.438 × 1 × 0.083 × W × 0.375 × 0.015 × 0.005 × 0.03 × 0.007 × 0.104 × 0.064

7/16 N × 0.469 × 0.922 × 0.065 × N × 0.4375 × 0.015 × 0.005 × 0.015 × 0.007 × 0.08 × 0.051

7/16 W × 0.5 × 1.25 × 0.083 × W × 0.4375 × 0.015 × 0.005 × 0.03 × 0.007 × 0.104 × 0.064

1/2 N × 0.531 × 1.062 × 0.095 × N × 0.5 × 0.015 × 0.005 × 0.03 × 0.007 × 0.121 × 0.074

1/2 W × 0.562 × 1.375 × 0.109 × W × 0.5 × 0.015 × 0.005 × 0.03 × 0.007 × 0.132 × 0.086

5/8 N × 0.656 × 1.312 × 0.095 × N × 0.625 × 0.03 × 0.007 × 0.03 × 0.007 × 0.121 × 0.074

5/8 W × 0.688 × 1.75 × 0.134 × W × 0.625 × 0.03 × 0.007 × 0.03 × 0.007 × 0.16 × 0.108

3/4 N × 0.812 × 1.469 × 0.134 × N × 0.75 × 0.03 × 0.007 × 0.03 × 0.007 × 0.16 × 0.108

3/4 W × 0.812 × 2 × 0.148 × W × 0.75 × 0.03 × 0.007 × 0.03 × 0.007 × 0.177 × 0.122

7/8 N × 0.938 × 1.75 × 0.134 × N × 0.875 × 0.03 × 0.007 × 0.03 × 0.007 × 0.16 × 0.108

7/8 W × 0.938 × 2.25 × 0.165 × W × 0.875 × 0.03 × 0.007 × 0.03 × 0.007 × 0.192 × 0.136

Product details

Order assurance

Reports & inspection

Packaging & delivery

Product questions

Related products

Plain Washer, Small Series

Plain Washer, Chamfered

Large Series Plain Washer

External Internal Tooth Lock Washer

Spring Washer, Form B (Split)

Plain Washer, Form A

Plain Washer, Normal Series, Product Grade C

Plain Washer, Large Series, Product Grade C

Quote Plain Steel Washer ASTM F844