The Washer,flat, cataloged under National Stock Number 5310-01-134-5791, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Meritor Heavy Vehicle Systems, Llc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-134-5791 |
| Primary Part Number | 1244-F-553 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Meritor Heavy Vehicle Systems, Llc |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES BOTTOM |
| Surface Finish | 63.0 MICROINCHES TOP |
| Overall Diameter | 1.469 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Hardness Rating | 57.0 ROCKWELL C MINIMUM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.250 INCHES NOMINAL IN |
| Thickness | 0.163 INCHES MINIMUM AND 0.167 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 8758283 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 1244-F-553 PRIMARY | Meritor Heavy Vehicle Systems, Llc (USA) |
| 1244-F-553 | Meritor Industrial Products, Llc (USA) |
NSN 5310-01-134-5791 is a Washer,flat, manufactured by Meritor Heavy Vehicle Systems, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-134-5791 has 3 manufacturer part numbers on file: 8758283 (U S Army Tank Automotive Command Amsta-Im-Mm), 1244-F-553 (Meritor Heavy Vehicle Systems, Llc), 1244-F-553 (Meritor Industrial Products, Llc).
Key specifications for 1244-F-553: Surface Finish: 63.0 MICROINCHES BOTTOM; Surface Finish: 63.0 MICROINCHES TOP; Overall Diameter: 1.469 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN; Hardness Rating: 57.0 ROCKWELL C MINIMUM. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.