The Washer,flat, cataloged under National Stock Number 5310-00-968-3150, 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 7 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-968-3150 |
| Primary Part Number | 4M27-6 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Overall Diameter | 0.500 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.188 INCHES NOMINAL IN |
| Thickness | 0.030 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 |
|---|---|
| 4M27-6 | Anillo Industries Llc (USA) |
| 4M27-6 PRIMARY | The Boeing Company Div Defense (USA) |
| 4M27-6 | All Power Manufacturing Co. (USA) |
| 4M27-6 | Tect Hypervelocity, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 10121899 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 4M27-6 | 5/9 Secondary reference Pioneer Machine Products Inc. |
| 4M27-6 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-968-3150 is a Washer,flat, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-968-3150 has 4 manufacturer part numbers on file: 4M27-6 (Anillo Industries Llc), 4M27-6 (The Boeing Company Div Defense), 4M27-6 (All Power Manufacturing Co.), 4M27-6 (Tect Hypervelocity, Inc.).
Key specifications for 4M27-6: Overall Diameter: 0.500 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL 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.