The Washer,flat, cataloged under National Stock Number 5310-01-381-9615, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Liftking Manufacturing Corp. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-381-9615 |
| Primary Part Number | A140753 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Liftking Manufacturing Corp |
| Status | ACTIVE |
| Overall Diameter | 3.160 INCHES MINIMUM AND 3.170 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1020 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 2.875 INCHES NOMINAL IN |
| Thickness | 0.187 INCHES NOMINAL IN |
| 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 |
|---|---|
| A140753 | Liftking Manufacturing Corp (CAN) |
| Reference | Meaning |
|---|---|
| 17993B | 3/9 Design control — primary reference Liftking Manufacturing Corp |
NSN 5310-01-381-9615 is a Washer,flat, manufactured by Liftking Manufacturing Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-381-9615 has 1 manufacturer part number on file: A140753 (Liftking Manufacturing Corp).
Key specifications for A140753: Overall Diameter: 3.160 INCHES MINIMUM AND 3.170 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL COMP 1020 OVERALL. 7 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.