The Nut,bearing Lock, cataloged under National Stock Number 5310-01-010-6280, 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. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-010-6280 |
| Primary Part Number | M2281AJ |
| Item Name | Nut,bearing Lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,3.851 IN. MIN OD DIA,3.875 IN. MAX OD DIA,3.560 IN. ID DIA 0.590 IN. THK,4 HOLES EQUALLY SPACED,0.203 IN. DIA 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 |
|---|---|
| M2281AJ PRIMARY | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA) |
| Reference | Meaning |
|---|---|
| 5310010106280 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5310-01-010-6280 is a Nut,bearing Lock, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-010-6280 has 1 manufacturer part number on file: M2281AJ (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).
Key specifications for M2281AJ: General Characteristics Item Description: STEEL,3.851 IN. MIN OD DIA,3.875 IN. MAX OD DIA,3.560 IN. ID DIA 0.590 IN. THK,4 HOLES EQUALLY SPACED,0.203 IN. DIA IN. 1 specification is 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.