The Washer,flat, cataloged under National Stock Number 5310-01-315-4899, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Catamount Mfg Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-315-4899 |
| Primary Part Number | LWNY-016-0 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Catamount Mfg Inc |
| Status | ACTIVE |
| Overall Diameter | 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Color | BLACK OVERALL |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.185 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Thickness | 0.015 INCHES MINIMUM AND 0.025 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 |
|---|---|
| LWNY-016-0 PRIMARY | Catamount Mfg Inc (USA) |
| Reference | Meaning |
|---|---|
| LWNY-016BK | 5/9 Secondary reference U.S. Government activity |
| 092-72912 | D/9 Drawing number reference only U.S. Government activity |
| 092-72912-016 | 5/1 Secondary reference U.S. Government activity |
NSN 5310-01-315-4899 is a Washer,flat, manufactured by Catamount Mfg Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-315-4899 has 1 manufacturer part number on file: LWNY-016-0 (Catamount Mfg Inc).
Key specifications for LWNY-016-0: Overall Diameter: 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Color: BLACK OVERALL; 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.