The Washer,flat, cataloged under National Stock Number 5310-00-331-3225, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 11 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-331-3225 |
| Primary Part Number | 8193347 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Overall Diameter | 0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-B-613 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Departure From Cited Designator | AS MODIFIED BY SURFACE TREATMENT |
| Nondefinitive Spec/std Data | A TYPE AND 2 GRADE AND E CLASS |
| Surface Treatment | NICKEL OVERALL |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY 268 OR COPPER ALLOY 11 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.380 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN |
| Thickness | 0.053 INCHES MINIMUM AND 0.073 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 |
|---|---|
| 8193347 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| FF-W-92 | 4/1 Identification reference U.S. Government activity |
| 310-0420-000 | C/1 Advisory reference — outside the item-of-supply concept Wrought Washer Mfg., Inc. |
| 807241-00 | 5/9 Secondary reference Defense Reduction Agency |
| AN960B616 | 4/1 Identification reference U.S. Government activity |
| 7601702 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5310-00-331-3225 is a Washer,flat, manufactured by Us Army Aviation and Missile Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-331-3225 has 1 manufacturer part number on file: 8193347 (Us Army Aviation and Missile Command).
Key specifications for 8193347: Overall Diameter: 0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN; Material Document and Classification: QQ-B-613 FED SPEC ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Departure From Cited Designator: AS MODIFIED BY SURFACE TREATMENT. 11 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.