Search by part number, size, or description.

Latest News, Catalogues and Info Sheets

Click the category shown above search results to see items similar to the product displayed.

Collection: Keysteel Lengths - Square - Carbon Steel

Keysteel Lengths (With Images)

Square

205 Products in this selection

Plain carbon steel key steel. Square steel bar that can be used for keysteel or for small construction projects.
Use oversized for replacing keys where the keyway may be slightly worn - standard aftermarket keysteel
Use undersized for manufacturing and new applications where the keyway tolerances can be controlled

Additional resources:
Keysteel Catalogue PDF

A more concise listing may be found on the Smallparts store at Keysteel Lengths - Square - Carbon Steel. Smallparts promote the most popular MBA products.

Width (s1)	Height (s2)	Length (L)	Indicative Image
Width (s1) 38.100 mm + 0.076 / - 0.00 _{(1.5 in.)}	Height (s2) 38.100 mm + 0.076 / - 0.00 _{(1.5 in.)}	Length (L) 914 mm +/- 3.2 _{(35.984 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Oversized
Part Number: 4R-0381-0914-KPO Square Keysteel Lengths - 38.1x38.1x914 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $836.86 AUD Regular price Sale price $836.86 AUD Unit price per Each
Width (s1)	Height (s2)	Length (L)	Indicative Image
Width (s1) 38.100 mm + 0.076 / - 0.00 _{(1.5 in.)}	Height (s2) 38.100 mm + 0.076 / - 0.00 _{(1.5 in.)}	Length (L) 914 mm +/- 3.2 _{(35.984 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Oversized
Part Number: 4R-0381-0914-KPO Square Keysteel Lengths - 38.1x38.1x914 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $836.86 AUD Regular price Sale price $836.86 AUD Unit price per Each View the product page first if you are unsure.
4R-0381-0914-KPO --- Square Keysteel Lengths - 38.1x38.1x914 mm - Carbon Steel 1045 4R-0381-0914-KPO --- Square Keysteel Lengths - 38.1x38.1x914 mm - Carbon Steel 1045 Regular price $836.86 AUD Regular price Sale price $836.86 AUD Unit price per Out of stock! Backorder Now
Width (s1) 38.100 mm + 0 / - 0.076 _{(1.5 in.)}	Height (s2) 38.100 mm + 0 / - 0.076 _{(1.5 in.)}	Length (L) 914 mm +/- 3.2 _{(35.984 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0381-0914-KPU Square Keysteel Lengths - 38.1x38.1x914 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $932.41 AUD Regular price Sale price $932.41 AUD Unit price per Each
Width (s1) 38.100 mm + 0 / - 0.076 _{(1.5 in.)}	Height (s2) 38.100 mm + 0 / - 0.076 _{(1.5 in.)}	Length (L) 914 mm +/- 3.2 _{(35.984 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0381-0914-KPU Square Keysteel Lengths - 38.1x38.1x914 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $932.41 AUD Regular price Sale price $932.41 AUD Unit price per Each View the product page first if you are unsure.
4R-0381-0914-KPU --- Square Keysteel Lengths - 38.1x38.1x914 mm - Carbon Steel 1045 4R-0381-0914-KPU --- Square Keysteel Lengths - 38.1x38.1x914 mm - Carbon Steel 1045 Regular price $932.41 AUD Regular price Sale price $932.41 AUD Unit price per Out of stock! Backorder Now
Width (s1) 38.100 mm + 0 / - 0.076 _{(1.5 in.)}	Height (s2) 38.100 mm + 0 / - 0.076 _{(1.5 in.)}	Length (L) 1800 mm +/- 3.2 _{(70.866 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0381-1800-KPU Square Keysteel Lengths - 38.1x38.1x1800 mm - Carbon Steel 1045 Contact Us \| Item Discontinued - Please contact us if you need a large quantity
Width (s1) 38.100 mm + 0 / - 0.076 _{(1.5 in.)}	Height (s2) 38.100 mm + 0 / - 0.076 _{(1.5 in.)}	Length (L) 1800 mm +/- 3.2 _{(70.866 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0381-1800-KPU Square Keysteel Lengths - 38.1x38.1x1800 mm - Carbon Steel 1045 Contact Us \| Item Discontinued - Please contact us if you need a large quantity
Width (s1) 38.100 mm + 0.076 / - 0.00 _{(1.5 in.)}	Height (s2) 38.100 mm + 0.076 / - 0.00 _{(1.5 in.)}	Length (L) 3000 mm +/- 3.2 _{(118.11 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Oversized
Part Number: 4R-0381-3000-KPO Square Keysteel Lengths - 38.1x38.1x3000 mm - Carbon Steel 1045 Contact Us \| Item Discontinued - Please contact us if you need a large quantity
Width (s1) 38.100 mm + 0.076 / - 0.00 _{(1.5 in.)}	Height (s2) 38.100 mm + 0.076 / - 0.00 _{(1.5 in.)}	Length (L) 3000 mm +/- 3.2 _{(118.11 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Oversized
Part Number: 4R-0381-3000-KPO Square Keysteel Lengths - 38.1x38.1x3000 mm - Carbon Steel 1045 Contact Us \| Item Discontinued - Please contact us if you need a large quantity
Width (s1) 41.275 mm + 0 / - 0.102 _{(1.625 in.)}	Height (s2) 41.275 mm + 0 / - 0.102 _{(1.625 in.)}	Length (L) 300 mm +/- 3.2 _{(11.811 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0413-0300-KPU Square Keysteel Lengths - 41.275x41.275x300 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $378.68 AUD Regular price Sale price $378.68 AUD Unit price per Each
Width (s1) 41.275 mm + 0 / - 0.102 _{(1.625 in.)}	Height (s2) 41.275 mm + 0 / - 0.102 _{(1.625 in.)}	Length (L) 300 mm +/- 3.2 _{(11.811 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0413-0300-KPU Square Keysteel Lengths - 41.275x41.275x300 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $378.68 AUD Regular price Sale price $378.68 AUD Unit price per Each View the product page first if you are unsure.
4R-0413-0300-KPU --- Square Keysteel Lengths - 41.275x41.275x300 mm - Carbon Steel 1045 4R-0413-0300-KPU --- Square Keysteel Lengths - 41.275x41.275x300 mm - Carbon Steel 1045 Regular price $378.68 AUD Regular price Sale price $378.68 AUD Unit price per Out of stock! Backorder Now
Width (s1) 44.450 mm + 0 / - 0.102 _{(1.75 in.)}	Height (s2) 44.450 mm + 0 / - 0.102 _{(1.75 in.)}	Length (L) 300 mm +/- 3.2 _{(11.811 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0445-0300-KPU Square Keysteel Lengths - 44.45x44.45x300 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $427.95 AUD Regular price Sale price $427.95 AUD Unit price per Each
Width (s1) 44.450 mm + 0 / - 0.102 _{(1.75 in.)}	Height (s2) 44.450 mm + 0 / - 0.102 _{(1.75 in.)}	Length (L) 300 mm +/- 3.2 _{(11.811 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0445-0300-KPU Square Keysteel Lengths - 44.45x44.45x300 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $427.95 AUD Regular price Sale price $427.95 AUD Unit price per Each View the product page first if you are unsure.
4R-0445-0300-KPU --- Square Keysteel Lengths - 44.45x44.45x300 mm - Carbon Steel 1045 4R-0445-0300-KPU --- Square Keysteel Lengths - 44.45x44.45x300 mm - Carbon Steel 1045 Regular price $427.95 AUD Regular price Sale price $427.95 AUD Unit price per Out of stock! Backorder Now
Width (s1) 44.450 mm + 0 / - 0.102 _{(1.75 in.)}	Height (s2) 44.450 mm + 0 / - 0.102 _{(1.75 in.)}	Length (L) 914 mm +/- 3.2 _{(35.984 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0445-0914-KPU Square Keysteel Lengths - 44.45x44.45x914 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $1,268.41 AUD Regular price Sale price $1,268.41 AUD Unit price per Each
Width (s1) 44.450 mm + 0 / - 0.102 _{(1.75 in.)}	Height (s2) 44.450 mm + 0 / - 0.102 _{(1.75 in.)}	Length (L) 914 mm +/- 3.2 _{(35.984 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0445-0914-KPU Square Keysteel Lengths - 44.45x44.45x914 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $1,268.41 AUD Regular price Sale price $1,268.41 AUD Unit price per Each View the product page first if you are unsure.
4R-0445-0914-KPU --- Square Keysteel Lengths - 44.45x44.45x914 mm - Carbon Steel 1045 4R-0445-0914-KPU --- Square Keysteel Lengths - 44.45x44.45x914 mm - Carbon Steel 1045 Regular price $1,268.41 AUD Regular price Sale price $1,268.41 AUD Unit price per Out of stock! Backorder Now
Width (s1) 44.450 mm + 0.102 / - 0.00 _{(1.75 in.)}	Height (s2) 44.450 mm + 0.102 / - 0.00 _{(1.75 in.)}	Length (L) 914 mm +/- 3.2 _{(35.984 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Oversized
Part Number: 4R-0445-0914-KPO Square Keysteel Lengths - 44.45x44.45x914 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $1,268.05 AUD Regular price Sale price $1,268.05 AUD Unit price per Each
Width (s1) 44.450 mm + 0.102 / - 0.00 _{(1.75 in.)}	Height (s2) 44.450 mm + 0.102 / - 0.00 _{(1.75 in.)}	Length (L) 914 mm +/- 3.2 _{(35.984 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Oversized
Part Number: 4R-0445-0914-KPO Square Keysteel Lengths - 44.45x44.45x914 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $1,268.05 AUD Regular price Sale price $1,268.05 AUD Unit price per Each View the product page first if you are unsure.
4R-0445-0914-KPO --- Square Keysteel Lengths - 44.45x44.45x914 mm - Carbon Steel 1045 4R-0445-0914-KPO --- Square Keysteel Lengths - 44.45x44.45x914 mm - Carbon Steel 1045 Regular price $1,268.05 AUD Regular price Sale price $1,268.05 AUD Unit price per Out of stock! Backorder Now
Width (s1) 44.450 mm + 0.102 / - 0.00 _{(1.75 in.)}	Height (s2) 44.450 mm + 0.102 / - 0.00 _{(1.75 in.)}	Length (L) 3000 mm +/- 3.2 _{(118.11 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Oversized
Part Number: 4R-0445-3000-KPO Square Keysteel Lengths - 44.45x44.45x3000 mm - Carbon Steel 1045 Contact Us \| Item Discontinued - Please contact us if you need a large quantity
Width (s1) 44.450 mm + 0.102 / - 0.00 _{(1.75 in.)}	Height (s2) 44.450 mm + 0.102 / - 0.00 _{(1.75 in.)}	Length (L) 3000 mm +/- 3.2 _{(118.11 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Oversized
Part Number: 4R-0445-3000-KPO Square Keysteel Lengths - 44.45x44.45x3000 mm - Carbon Steel 1045 Contact Us \| Item Discontinued - Please contact us if you need a large quantity
Width (s1) 50.800 mm + 0 / - 0.102 _{(2 in.)}	Height (s2) 50.800 mm + 0 / - 0.102 _{(2 in.)}	Length (L) 300 mm +/- 3.2 _{(11.811 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0508-0300-KPU Square Keysteel Lengths - 50.8x50.8x300 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $557.95 AUD Regular price Sale price $557.95 AUD Unit price per Each
Width (s1) 50.800 mm + 0 / - 0.102 _{(2 in.)}	Height (s2) 50.800 mm + 0 / - 0.102 _{(2 in.)}	Length (L) 300 mm +/- 3.2 _{(11.811 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0508-0300-KPU Square Keysteel Lengths - 50.8x50.8x300 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $557.95 AUD Regular price Sale price $557.95 AUD Unit price per Each View the product page first if you are unsure.
4R-0508-0300-KPU --- Square Keysteel Lengths - 50.8x50.8x300 mm - Carbon Steel 1045 4R-0508-0300-KPU --- Square Keysteel Lengths - 50.8x50.8x300 mm - Carbon Steel 1045 Regular price $557.95 AUD Regular price Sale price $557.95 AUD Unit price per Out of stock! Backorder Now
Width (s1) 50.800 mm + 0 / - 0.102 _{(2 in.)}	Height (s2) 50.800 mm + 0 / - 0.102 _{(2 in.)}	Length (L) 914 mm +/- 3.2 _{(35.984 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0508-0914-KPU Square Keysteel Lengths - 50.8x50.8x914 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $1,640.50 AUD Regular price Sale price $1,640.50 AUD Unit price per Each
Width (s1) 50.800 mm + 0 / - 0.102 _{(2 in.)}	Height (s2) 50.800 mm + 0 / - 0.102 _{(2 in.)}	Length (L) 914 mm +/- 3.2 _{(35.984 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0508-0914-KPU Square Keysteel Lengths - 50.8x50.8x914 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $1,640.50 AUD Regular price Sale price $1,640.50 AUD Unit price per Each View the product page first if you are unsure.
4R-0508-0914-KPU --- Square Keysteel Lengths - 50.8x50.8x914 mm - Carbon Steel 1045 4R-0508-0914-KPU --- Square Keysteel Lengths - 50.8x50.8x914 mm - Carbon Steel 1045 Regular price $1,640.50 AUD Regular price Sale price $1,640.50 AUD Unit price per Out of stock! Backorder Now
Width (s1) 63.500 mm + 0 / - 0.102 _{(2.5 in.)}	Height (s2) 63.500 mm + 0 / - 0.102 _{(2.5 in.)}	Length (L) 300 mm +/- 3.2 _{(11.811 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0635-0300-KPU Square Keysteel Lengths - 63.5x63.5x300 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $957.77 AUD Regular price Sale price $957.77 AUD Unit price per Each
Width (s1) 63.500 mm + 0 / - 0.102 _{(2.5 in.)}	Height (s2) 63.500 mm + 0 / - 0.102 _{(2.5 in.)}	Length (L) 300 mm +/- 3.2 _{(11.811 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0635-0300-KPU Square Keysteel Lengths - 63.5x63.5x300 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $957.77 AUD Regular price Sale price $957.77 AUD Unit price per Each View the product page first if you are unsure.
4R-0635-0300-KPU --- Square Keysteel Lengths - 63.5x63.5x300 mm - Carbon Steel 1045 4R-0635-0300-KPU --- Square Keysteel Lengths - 63.5x63.5x300 mm - Carbon Steel 1045 Regular price $957.77 AUD Regular price Sale price $957.77 AUD Unit price per Out of stock! Backorder Now
Width (s1) 63.500 mm + 0 / - 0.102 _{(2.5 in.)}	Height (s2) 63.500 mm + 0 / - 0.102 _{(2.5 in.)}	Length (L) 914 mm +/- 3.2 _{(35.984 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0635-0914-KPU Square Keysteel Lengths - 63.5x63.5x914 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $2,712.23 AUD Regular price Sale price $2,712.23 AUD Unit price per Each
Width (s1) 63.500 mm + 0 / - 0.102 _{(2.5 in.)}	Height (s2) 63.500 mm + 0 / - 0.102 _{(2.5 in.)}	Length (L) 914 mm +/- 3.2 _{(35.984 in.)}
Material: Carbon Steel 1045 Finish: Plain Tolerance Type: Standard Undersized
Part Number: 4R-0635-0914-KPU Square Keysteel Lengths - 63.5x63.5x914 mm - Carbon Steel 1045 Out of Stock \| Backorder Now \| Orders can be expected around Sun, Jun 08, 2025 Regular price $2,712.23 AUD Regular price Sale price $2,712.23 AUD Unit price per Each View the product page first if you are unsure.
4R-0635-0914-KPU --- Square Keysteel Lengths - 63.5x63.5x914 mm - Carbon Steel 1045 4R-0635-0914-KPU --- Square Keysteel Lengths - 63.5x63.5x914 mm - Carbon Steel 1045 Regular price $2,712.23 AUD Regular price Sale price $2,712.23 AUD Unit price per Out of stock! Backorder Now