The Washer,lock Blank, cataloged under National Stock Number 5310-01-511-1981, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fatigue Technology, Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-511-1981 |
| Primary Part Number | NS203520-048-3 |
| Item Name | Washer,lock Blank |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fatigue Technology, Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 4053-228 | Fatigue Technology, Inc (USA) |
| NS203520-048-3 PRIMARY | Fatigue Technology, Inc (USA) |
NSN 5310-01-511-1981 is a Washer,lock Blank, manufactured by Fatigue Technology, Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-511-1981 has 2 manufacturer part numbers on file: 4053-228 (Fatigue Technology, Inc), NS203520-048-3 (Fatigue Technology, Inc).
Key specifications for NS203520-048-3: End Item Identification: F16 AIRCRAFT. 0 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.