The Washer,flat, cataloged under National Stock Number 5310-01-109-1173, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Miltope Corporation. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-109-1173 |
| Primary Part Number | M149-230 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Miltope Corporation |
| Status | ACTIVE |
| Overall Diameter | 0.406 INCHES NOMINAL IN |
| Material Document and Classification | MIL-P-19468 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.265 INCHES NOMINAL IN |
| Thickness | 0.090 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 |
|---|---|
| 0.406X0.265X0.09THK | The Soundcoat Company, Inc. Dba Soundcoat Co (USA) |
| M149-230 PRIMARY | Miltope Corporation (USA) |
| 0.406X.265X.09THK | The Soundcoat Company, Inc. Dba Soundcoat Co (USA) |
NSN 5310-01-109-1173 is a Washer,flat, manufactured by Miltope Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-109-1173 has 3 manufacturer part numbers on file: 0.406X0.265X0.09THK (The Soundcoat Company, Inc. Dba Soundcoat Co), M149-230 (Miltope Corporation), 0.406X.265X.09THK (The Soundcoat Company, Inc. Dba Soundcoat Co).
Key specifications for M149-230: Overall Diameter: 0.406 INCHES NOMINAL IN; Material Document and Classification: MIL-P-19468 MIL SPEC 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.