SAE 841 Bronze Thrust WashersST series
Symmco manufactures 75 stock sizes of SAE 841 oil-impregnated sintered bronze thrust washers at its Pennsylvania and Tennessee plants, from 1/4 to 2-3/4 inch inside diameter. Every size in the table below is a stock catalogue part with full dimensions and a 2D drawing, and 75 are cross-referenced to equivalent industry part numbers.
Symmco does not charge tooling costs on any standard tooling product, there is no minimum order quantity on stocked catalogue parts, and stocked parts ship in 24 hours. The full tooling and terms are on their own page.
- Stock sizes
- 75
- Material
- SAE 841
- Cross-referenced sizes
- 75
- 2D drawings
- 75
- Made in
- Pennsylvania and Tennessee, USA
Bronze Thrust Washers size table: all 75 stock sizes
Listed by Inside Diameter (ID), Outside Diameter (OD), Thickness. Search by a Symmco part number or by the part number you are replacing.
| Part Number | ID(in) | OD(in) | Thickness(in) | Interchangeable With | Drawing |
|---|---|---|---|---|---|
| ST-814-2 | 1/4 | 7/16 | 0.0625 | TT-400 | 2D PDF |
| ST-816-2 | 1/4 | 1/2 | 0.0625 | TT-504 | 2D PDF |
| ST-820-2 | 1/4 | 5/8 | 0.0625 | TT-601, TB410, TW-25, EW041001 | 2D PDF |
| ST-1020-2 | 5/16 | 5/8 | 0.0625 | TT-602 | 2D PDF |
| ST-1024-2 | 5/16 | 3/4 | 0.0625 | TT-709-1, TB512, TW-31, EW051201 | 2D PDF |
| ST-1220-2 | 3/8 | 5/8 | 0.0625 | TT-604 | 2D PDF |
| ST-1224-1 | 3/8 | 3/4 | 0.0313 | TT-703 | 2D PDF |
| ST-1224-2 | 3/8 | 3/4 | 0.0625 | TT-710-1, TW-37EW061201 | 2D PDF |
| ST-1224-4 | 3/8 | 3/4 | 0.125 | TT-710-2 | 2D PDF |
| ST-1424-2 | 7/16 | 3/4 | 0.0625 | TT-705-1, TB712, TW-43, EW071201 | 2D PDF |
| ST-1424-4 | 7/16 | 3/4 | 0.125 | TT-705-2 | 2D PDF |
| ST-1624-2 | 1/2 | 3/4 | 0.0625 | TT-706, TW-50EW081201 | 2D PDF |
| ST-1628-6 | 1/2 | 7/8 | 0.1875 | TT-801, TB814 | 2D PDF |
| ST-1632-2 | 1/2 | 1 | 0.0625 | TT-1001, TB816, TW-51, EW081601 | 2D PDF |
| ST-1632-3 | 1/2 | 1 | 0.0938 | TT-1001-2 | 2D PDF |
| ST-1632-4 | 1/2 | 1 | 0.125 | TT-1001-1, TW-52EW081602 | 2D PDF |
| ST-1840-2 | 9/16 | 1-1/4 | 0.0625 | TT-1200-1 | 2D PDF |
| ST-1840-4 | 9/16 | 1-1/4 | 0.125 | TT-1200, TB920, TW-56, EW092002 | 2D PDF |
| ST-2032-2 | 5/8 | 1 | 0.0625 | TT-1002-1, TW-62EW101601 | 2D PDF |
| ST-2032-4 | 5/8 | 1 | 0.125 | TT-1002, TB10166, TW-63, EW101602 | 2D PDF |
| ST-2038-2 | 5/8 | 1-3/16 | 0.0625 | TT-1102-1 | 2D PDF |
| ST-2038-3 | 5/8 | 1-3/16 | 0.0938 | TT-1102, TB1019, TW-64, EW101902 | 2D PDF |
| ST-2038-4 | 5/8 | 1-3/16 | 0.125 | TT-1102-2 | 2D PDF |
| ST-2040-2 | 5/8 | 1-1/4 | 0.0625 | TT-1204 | 2D PDF |
| ST-2040-4 | 5/8 | 1-1/4 | 0.125 | TT-1204-1, TB1020, TW-65, EW102002 | 2D PDF |
| ST-2148-2 | 21/32 | 1-1/2 | 0.0625 | TT-1508-1 | 2D PDF |
| ST-2148-4 | 21/32 | 1-1/2 | 0.125 | TT-1508-2 | 2D PDF |
| ST-2440-2 | 3/4 | 1-1/4 | 0.0625 | TT-1205, TW-75EW122001 | 2D PDF |
| ST-2440-4 | 3/4 | 1-1/4 | 0.125 | TT-1205-1, TW-76EW122002 | 2D PDF |
| ST-2444-2 | 3/4 | 1-3/8 | 0.0625 | TT-1303-1, TW-77-5EW122201 | 2D PDF |
| ST-2444-4 | 3/4 | 1-3/8 | 0.125 | TT-1303-2, TB1222, TW-77, EW122202 | 2D PDF |
| ST-2444-8 | 3/4 | 1-3/8 | 0.25 | TT-1303-4 | 2D PDF |
| ST-2450-3 | 3/4 | 1-9/16 | 0.0938 | TT-1501-1, TB1225, TW-78, EW122502 | 2D PDF |
| ST-2456-4 | 3/4 | 1-3/4 | 0.125 | TT-1701, TB1228, TW-79, EW122802 | 2D PDF |
| ST-2848-2 | 7/8 | 1-1/2 | 0.0625 | TT-1503-2 | 2D PDF |
| ST-2848-4 | 7/8 | 1-1/2 | 0.125 | TT-1503, TB1424, TW-87, EW142402 | 2D PDF |
| ST-2864-4 | 7/8 | 2 | 0.125 | TT-2007 | 2D PDF |
| ST-2868-4 | 7/8 | 2-1/8 | 0.125 | TT-2101-1, TB1434 | 2D PDF |
| ST-3248-2 | 1 | 1-1/2 | 0.0625 | TT-1502-2 | 2D PDF |
| ST-3248-4 | 1 | 1-1/2 | 0.125 | TT-1502 TW-100, EW162402 | 2D PDF |
| ST-3248-6 | 1 | 1-1/2 | 0.1875 | TT-1502-1 | 2D PDF |
| ST-3252-2 | 1 | 1-5/8 | 0.0625 | TT-1603-3 | 2D PDF |
| ST-3252-4 | 1 | 1-5/8 | 0.125 | TT-1603 TW-101, EW162602 | 2D PDF |
| ST-3252-8 | 1 | 1-5/8 | 0.25 | TT-1603-4 | 2D PDF |
| ST-3256-2 | 1 | 1-3/4 | 0.0625 | TT-1709-1 | 2D PDF |
| ST-3256-4 | 1 | 1-3/4 | 0.125 | TT-1709 | 2D PDF |
| ST-3264-4 | 1 | 2 | 0.125 | TT-2001TW-102, EW163202 | 2D PDF |
| ST-3264-6 | 1 | 2 | 0.1875 | TT-2001-1 | 2D PDF |
| ST-3292-4 | 1 | 2-7/8 | 0.125 | TT-2800 | 2D PDF |
| ST-3476-2 | 1-1/16 | 2-3/8 | 0.0625 | TT-2301-4 | 2D PDF |
| ST-3476-4 | 1-1/16 | 2-3/8 | 0.125 | TT-2301-3 | 2D PDF |
| ST-3660-4 | 1-1/8 | 1-7/8 | 0.125 | TT-1800-1 | 2D PDF |
| ST-4054-4 | 1-1/4 | 1-11/16 | 0.125 | TT-1602-1TW-125, EW202702 | 2D PDF |
| ST-4064-2 | 1-1/4 | 2 | 0.0625 | TT-2006TW-126-5, EW203201 | 2D PDF |
| ST-4064-4 | 1-1/4 | 2 | 0.125 | TT-2006-1TW-126, EW203202 | 2D PDF |
| ST-4076-2 | 1-1/4 | 2-3/8 | 0.0625 | TT-2304-1 | 2D PDF |
| ST-4076-4 | 1-1/4 | 2-3/8 | 0.125 | TT-2304-2 | 2D PDF |
| ST-4462-4 | 1-3/8 | 1-15/16 | 0.125 | TT-1900 | 2D PDF |
| ST-4864-4 | 1-1/2 | 2 | 0.125 | TT-2008 | 2D PDF |
| ST-4880-4 | 1-1/2 | 2-1/2 | 0.125 | TT-2500-1TW-150, EW244002 | 2D PDF |
| ST-5078-4 | 1-9/16 | 2-7/16 | 0.125 | TT-2402 | 2D PDF |
| ST-5678-4 | 1-3/4 | 2-7/16 | 0.125 | TT-2400-1 | 2D PDF |
| ST-5684-4 | 1-3/4 | 2-5/8 | 0.125 | TT-2601TW-175, EW284202 | 2D PDF |
| ST-6284-4 | 1-15/16 | 2-5/8 | 0.125 | TT-2600 | 2D PDF |
| ST-6496-4 | 2 | 3 | 0.125 | TT-3001-3TW-200, EW324802 | 2D PDF |
| ST-6496-6 | 2 | 3 | 0.1875 | TT-3001 | 2D PDF |
| ST-6496-8 | 2 | 3 | 0.25 | TT-3001-1TW-201, EW324804 | 2D PDF |
| ST-40106-2 | 1-1/4 | 3-5/16 | 0.0625 | TT-3301 | 2D PDF |
| ST-40106-4 | 1-1/4 | 3-5/16 | 0.125 | TT-3301-1 | 2D PDF |
| ST-48112-6 | 1-1/2 | 3-1/2 | 0.1875 | TT-3500-1, TB2456, TW-151, EW245603 | 2D PDF |
| ST-64116-6 | 2 | 3-5/8 | 0.1875 | TT-3600 | 2D PDF |
| ST-66128-4 | 2-1/16 | 4 | 0.125 | TT-4002-1 | 2D PDF |
| ST-66128-8 | 2-1/16 | 4 | 0.25 | TT-4002 | 2D PDF |
| ST-80104-4 | 2-1/2 | 3-1/4 | 0.125 | TT-3200 | 2D PDF |
| ST-88124-8 | 2-3/4 | 3-7/8 | 0.25 | TT-3800 | 2D PDF |
| No part number or interchange reference matches that search. | |||||
All dimensions in inches. Every size listed is a stock catalogue part. Find this size in the part finder and request a quote.
SAE 841 material properties: what these thrust washers are made of
SAE 841 oil-impregnated sintered bronze is a nominal 90% copper / 10% tin alloy, sintered to a final density of 6.4 to 6.8 g/cc and vacuum-impregnated with a high-grade, 100-viscosity, non-detergent rust and oxidation inhibited turbine oil, which is what makes a part in this material self-lubricating and maintenance-free in most applications. Symmco's bronze carries 24% oil by volume where the industry standard is 19%, and its minimum K-value of 30,000 sits above the 26,500 industry standard. The bronze is lead-free, Symmco specifies it as MPIF CT-1000-K26 and follows all MPIF standards, and when the standard oil's -10°F to 200°F operating range does not suit an application, multiple oil types are available, including special military-grade oils.
| Property | SAE 841 | Note |
|---|---|---|
| MPIF designation | MPIF CT-1000-K26 | |
| Composition | Nominal 90% copper / 10% tin | |
| Sintered density | 6.4 to 6.8 g/cc | |
| Oil content | 24% by volume | Industry standard: 19% |
| K-value (minimum) | 30,000 | Industry standard: 26,500 |
| PV value (maximum) | 50,000 | |
| Maximum static load | 8,000 psi | |
| Maximum surface speed | 500 surface feet per minute | |
| Standard oil | High-grade, 100-viscosity, non-detergent rust and oxidation inhibited turbine oil | Multiple oil types available, including special military-grade oils |
| Oil operating range | -10°F to 200°F | |
| Lead content | Lead-free |
The full range of materials Symmco runs, from bronze and iron-copper to stainless steel and soft magnetic composites, is on the materials page.
Cross-reference: replacing another manufacturer’s thrust washers
75 of Symmco’s 75 stock thrust washers list the industry part numbers they interchange with. Search the table above for the number you currently buy to find the Symmco equivalent, then confirm the size in the part finder and request a quote; because it is a stock catalogue size, there is no tooling charge and no minimum order quantity.
Other stock families
- Bronze Sleeve BearingsSS · SAE 841
- Bronze Flange BearingsBSF · SAE 841
- Sleeve Flange BearingsSF · SAE 841
- Flanged BearingsFFB · SAE 841
- Bronze Cored BarsSCS · SAE 841
- Bronze Solid BarsSBS · SAE 841
- Bronze Rectangular PlatesSP · SAE 841
- Bronze Solid DiscsSDD · SAE 841
- Bronze Cored DiscSCD · SAE 841
- Iron-Copper Cored BarsFCCS · SAE 863
- Iron-Copper Solid BarsFCSS · SAE 863