The Washer,lock, cataloged under National Stock Number 5310-01-264-9410, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Metric and Multistandard Components Corp. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-264-9410 |
| Primary Part Number | DIN127B-M10-A4C |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Metric and Multistandard Components Corp |
| Status | ACTIVE |
| Hardness Rating | 44.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 18.1 MILLIMETERS MAXIMUM MM |
| Material Thickness | 2.05 MILLIMETERS MINIMUM AND 2.35 MILLIMETERS MAXIMUM MM |
| Color | BLACK OVERALL |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 10.2 MILLIMETERS MINIMUM AND 10.7 MILLIMETERS MAXIMUM MM |
| 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 |
|---|---|
| 487835 | Wartsila France SAS (FRA) |
| DIN127B-M10-A4C PRIMARY | Metric and Multistandard Components Corp (USA) |
| WF20942 | Westfield Fasteners (GBR) |
| DIN 127B-M10-A4 | Inrada Group (NLD) |
| Reference | Meaning |
|---|---|
| 085 310 18 | 5/2 Secondary reference U.S. Government activity |
| B-10-DIN-127 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-264-9410 is a Washer,lock, manufactured by Metric and Multistandard Components Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-264-9410 has 4 manufacturer part numbers on file: 487835 (Wartsila France SAS), DIN127B-M10-A4C (Metric and Multistandard Components Corp), WF20942 (Westfield Fasteners), DIN 127B-M10-A4 (Inrada Group).
Key specifications for DIN127B-M10-A4C: Hardness Rating: 44.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 18.1 MILLIMETERS MAXIMUM MM; Material Thickness: 2.05 MILLIMETERS MINIMUM AND 2.35 MILLIMETERS MAXIMUM MM. 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.