The Washer,lock, cataloged under National Stock Number 5310-01-161-5412, 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 6 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-161-5412 |
| Primary Part Number | DIN 127B 20 |
| 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 | 33.6 MILLIMETERS NOMINAL MM |
| Material Thickness | 4.0 MILLIMETERS NOMINAL MM |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 20.2 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 |
|---|---|
| DIN 127B 20 PRIMARY | Metric and Multistandard Components Corp (USA) |
| DIN127-B20-A2L | Din Deutsches Institut Fur Normung Ev (DEU) |
| Reference | Meaning |
|---|---|
| 10505933 | 5/9 Secondary reference General Dynamics Land Systems Canadacorp |
| 127-B20 | 5/9 Secondary reference Metric and Multistandard Components Corp |
| 3M926-5-17 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 5310-01-161-5412 is a Washer,lock, manufactured by Metric and Multistandard Components Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-161-5412 has 2 manufacturer part numbers on file: DIN 127B 20 (Metric and Multistandard Components Corp), DIN127-B20-A2L (Din Deutsches Institut Fur Normung Ev).
Key specifications for DIN 127B 20: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 33.6 MILLIMETERS NOMINAL MM; Material Thickness: 4.0 MILLIMETERS NOMINAL MM; Surface Treatment: ZINC OVERALL. 6 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.