The Washer,flat, cataloged under National Stock Number 5310-01-233-9294, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (CAGE 61208); Marine & Industrial Transmissions Ltd (CAGE U2621) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-233-9294 |
| Primary Part Number | B-1512-AC |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| 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 |
|---|---|
| B-1512-AC PRIMARY | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA) |
| B1512AC | Marine & Industrial Transmissions Ltd (GBR) |
| Reference | Meaning |
|---|---|
| B1512AC | 5/9 Secondary reference Twin Disc International S a |
| 2B-1512-AC | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-233-9294 is a Washer,flat, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-233-9294 has 2 manufacturer part numbers on file: B-1512-AC (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), B1512AC (Marine & Industrial Transmissions Ltd).
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.