The Nut,special, cataloged under National Stock Number 5310-01-288-5673, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Timken Corporation. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Nut,special |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Lake Shore Systems, Inc. (CAGE 34712); The Timken Corporation (CAGE 60038) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-288-5673 |
| Primary Part Number | TAN138 |
| Item Name | Nut,special |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Timken Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 2D3-978 PIECE 73 | Lake Shore Systems, Inc. (USA) |
| TAN138 PRIMARY | The Timken Corporation (USA) |
| Reference | Meaning |
|---|---|
| TAN 138 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 2D3-978 ITEM 73 | C/1 Advisory reference — outside the item-of-supply concept Lake Shore Systems, Inc. |
NSN 5310-01-288-5673 is a Nut,special, manufactured by The Timken Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-288-5673 has 2 manufacturer part numbers on file: 2D3-978 PIECE 73 (Lake Shore Systems, Inc.), TAN138 (The Timken Corporation).
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.