The Washer,flat, cataloged under National Stock Number 5310-01-062-0526, 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 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-062-0526 |
| Primary Part Number | 12266650-7 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Treatment Document and Classification | CAP-177 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-766,COND A,CLASS 302 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN |
| Thickness | 0.034 INCHES MINIMUM AND 0.038 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 |
|---|---|
| 12266650-7 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| CAV10-209P | 5/9 Secondary reference U.S. Government activity |
| CAV10-209P | 5/9 Secondary reference Recon/optical, Inc. |
NSN 5310-01-062-0526 is a Washer,flat, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-062-0526 has 1 manufacturer part number on file: 12266650-7 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12266650-7: Surface Treatment Document and Classification: CAP-177 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-766,COND A,CLASS 302 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.