The Washer,flat, cataloged under National Stock Number 5310-00-579-4161, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ami Industries, Inc Div Utc Aerospace Systems. 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 | 5310-00-579-4161 |
| Primary Part Number | 574B00008 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ami Industries, Inc Div Utc Aerospace Systems |
| Status | ACTIVE |
| Overall Diameter | 0.625 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-268,T4 /CANC/ FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.250 INCHES NOMINAL IN |
| Thickness | 0.125 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 |
|---|---|
| 574B00008 PRIMARY | Ami Industries, Inc Div Utc Aerospace Systems (USA) |
NSN 5310-00-579-4161 is a Washer,flat, manufactured by Ami Industries, Inc Div Utc Aerospace Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-579-4161 has 1 manufacturer part number on file: 574B00008 (Ami Industries, Inc Div Utc Aerospace Systems).
Key specifications for 574B00008: Overall Diameter: 0.625 INCHES NOMINAL IN; Material Document and Classification: QQ-A-268,T4 /CANC/ FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: ZINC AND CHROMATE OVERALL. 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.