The Washer,flat, cataloged under National Stock Number 5310-01-421-0669, 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 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-421-0669 |
| Primary Part Number | 12382189 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Overall Diameter | 2.222 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A36 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A576 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5022 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Right Corner Chamfer Angle | 40.0 DEGREES MINIMUM AND 50.0 DEGREES MAXIMUM |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.531 INCHES NOMINAL IN |
| Thickness | 0.370 INCHES MINIMUM AND 0.390 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 |
|---|---|
| 12382189 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5310-01-421-0669 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 5310-01-421-0669 has 1 manufacturer part number on file: 12382189 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12382189: Overall Diameter: 2.222 INCHES NOMINAL IN; Material Document and Classification: ASTM A36 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A576 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5022 ASSN STD 2ND MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Outside Right Corner Chamfer Angle: 40.0 DEGREES MINIMUM AND 50.0 DEGREES MAXIMUM. 9 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.