The Washer,flat, cataloged under National Stock Number 5310-01-204-3346, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-204-3346 |
| Primary Part Number | 4M116-03019 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Overall Diameter | 0.552 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN |
| Material Document and Classification | OAK -651/3-31,FSCM 07512 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC TETRAFLUOROETHYLENE OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN |
| Thickness | 0.031 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 |
|---|---|
| 4M116-03019 | Aero-Plastics, Inc. (USA) |
| 4M116-03019 | Moeller Manufacturing & Supply, Llc (USA) |
| 4M116-03019 PRIMARY | The Boeing Company Div Defense (USA) |
| 4M116-03019 | Anillo Industries Llc (USA) |
| 4M116-03019 | Indiana Aircraft Hardware, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 4M116-03019 | 5/9 Secondary reference Jetron Inc |
| 4M116-03019 | 5/9 Secondary reference Plastifab Incorporated |
| 4M116-03019 | C/1 Advisory reference — outside the item-of-supply concept K & L Precision Plastics Inc Div K & L Prescison Plastics, Inc. |
| 10110152 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 4M116-03019 | C/1 Advisory reference — outside the item-of-supply concept Plastifab, Inc. Dba Plastifab Leed Plastics Div Plasifab Inc. |
NSN 5310-01-204-3346 is a Washer,flat, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-204-3346 has 5 manufacturer part numbers on file: 4M116-03019 (Aero-Plastics, Inc.), 4M116-03019 (Moeller Manufacturing & Supply, Llc), 4M116-03019 (The Boeing Company Div Defense), 4M116-03019 (Anillo Industries Llc), 4M116-03019 (Indiana Aircraft Hardware, Inc.).
Key specifications for 4M116-03019: Overall Diameter: 0.552 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN; Material Document and Classification: OAK -651/3-31,FSCM 07512 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.