The Washer,flat, cataloged under National Stock Number 5310-01-122-3213, 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 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-122-3213 |
| Primary Part Number | 125ST-M8 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Metric and Multistandard Components Corp |
| Status | ACTIVE |
| Overall Diameter | 17.0 MILLIMETERS NOMINAL MM |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 304 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 8.4 MILLIMETERS NOMINAL MM |
| Thickness | 1.6 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 |
|---|---|
| 322123F91 FIG.15 | Isotta Fraschini Motori Spa (ITA) |
| 125ST-M8 PRIMARY | Metric and Multistandard Components Corp (USA) |
| 322190F01 | Isotta Fraschini Motori Spa (ITA) |
NSN 5310-01-122-3213 is a Washer,flat, manufactured by Metric and Multistandard Components Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-122-3213 has 3 manufacturer part numbers on file: 322123F91 FIG.15 (Isotta Fraschini Motori Spa), 125ST-M8 (Metric and Multistandard Components Corp), 322190F01 (Isotta Fraschini Motori Spa).
Key specifications for 125ST-M8: Overall Diameter: 17.0 MILLIMETERS NOMINAL MM; Material Document and Classification: AISI ASSN STD 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.