The Washer,key, cataloged under National Stock Number 5310-00-752-1786, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 5 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-752-1786 |
| Primary Part Number | 7521786 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| External Straight Key Length | 0.437 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-698 FED SPEC ALL MATERIAL RESPONSES OR QQ-S-700 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| External Straight Key Width | 0.312 INCHES NOMINAL IN |
| Material | STEEL COMP 1009 OVERALL |
| Hole Diameter | 0.373 INCHES NOMINAL 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 |
|---|---|
| 7521786 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 1820R44 | Meritor Heavy Vehicle Systems, Llc (USA) |
| 1820R44 | Meritor Industrial Products, Llc (USA) |
| Reference | Meaning |
|---|---|
| 674338 | 5/9 Secondary reference Sasco Inc Canadian Div |
| 1412D5 | 5/9 Secondary reference Diamond Reo Truck Co |
| 5310007521786 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 324748 | 5/9 Secondary reference Daf Trucks N.v. |
NSN 5310-00-752-1786 is a Washer,key, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-752-1786 has 3 manufacturer part numbers on file: 7521786 (U S Army Tank Automotive Command Amsta-Im-Mm), 1820R44 (Meritor Heavy Vehicle Systems, Llc), 1820R44 (Meritor Industrial Products, Llc).
Key specifications for 7521786: External Straight Key Length: 0.437 INCHES NOMINAL IN; Material Document and Classification: QQ-S-698 FED SPEC ALL MATERIAL RESPONSES OR QQ-S-700 FED SPEC ALL MATERIAL RESPONSES OVERALL; External Straight Key Width: 0.312 INCHES NOMINAL IN; Material: STEEL COMP 1009 OVERALL. 5 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.