The Washer,lock, cataloged under National Stock Number 5310-01-070-9750, 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 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-070-9750 |
| Primary Part Number | 127-M4 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Metric and Multistandard Components Corp |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 7.1 MILLIMETERS NOMINAL7.1 MILLIMETERS NOMINAL MM |
| Material Thickness | 0.9 MILLIMETERS NOMINAL0.9 MILLIMETERS NOMINAL MM |
| Material | STEEL OVERALL |
| Hole Diameter | 4.1 MILLIMETERS NOMINAL4.1 MILLIMETERS NOMINAL 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 |
|---|---|
| 127-M4 | Metric and Multistandard Components Corp (USA) |
| Reference | Meaning |
|---|---|
| 127-M4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-070-9750 is a Washer,lock, manufactured by Metric and Multistandard Components Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-070-9750 has 1 manufacturer part number on file: 127-M4 (Metric and Multistandard Components Corp).
Key specifications for 127-M4: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 7.1 MILLIMETERS NOMINAL7.1 MILLIMETERS NOMINAL MM; Material Thickness: 0.9 MILLIMETERS NOMINAL0.9 MILLIMETERS NOMINAL MM; Material: STEEL OVERALL. 5 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.