The Washer,flat, cataloged under National Stock Number 5310-01-411-0612, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bossard Intl Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-411-0612 |
| Primary Part Number | DIN433-M4 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bossard Intl Inc |
| Status | ACTIVE |
| Overall Diameter | 8.2 MILLIMETERS NOMINAL MM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 304 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 4.3 MILLIMETERS NOMINAL MM |
| Thickness | 0.5 MILLIMETERS NOMINAL MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-01-411-0612 is a Washer,flat, manufactured by Bossard Intl Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-411-0612 has 2 manufacturer part numbers on file: DIN433-M4 (Bossard Intl Inc), BN1414 M4 (Bossard Intl Inc).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-500-6552. Verify interchangeability with system specifications before substitution.
Key specifications for DIN433-M4: Overall Diameter: 8.2 MILLIMETERS NOMINAL MM; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL COMP 304 OVERALL. 7 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.