The Nut,plain,castellated,hexagon, cataloged under National Stock Number 5310-00-655-5863, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Machine Specialties, Llc. The record lists 13 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Nut,plain,castellated,hexagon |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Machine Specialties, Llc (CAGE 1DDX0); Hydromach Inc Dba Hydromach Inc (CAGE 1FG56); Aerometals, Inc. (CAGE 32664); Logistical Support Llc (CAGE 1HFE7); Es3 Prime Logistics Group, Inc. Dba Es3 Plg (CAGE 6LKA3) |
| Parameter | Value |
|---|---|
| NSN | 5310-00-655-5863 |
| Primary Part Number | 66-3935 |
| Item Name | Nut,plain,castellated,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Machine Specialties, Llc |
| 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 |
|---|---|
| 66-3935 | Machine Specialties, Llc (USA) |
| 66-3935 | Hydromach Inc Dba Hydromach Inc (USA) |
| 66-3935 | Aerometals, Inc. (USA) |
| 66-3935 | Logistical Support Llc (USA) |
| 66-3935 | Es3 Prime Logistics Group, Inc. Dba Es3 Plg (USA) |
| 66-3935 | Heroux-Devtek Inc (CAN) |
| 66-3935 | Alpine Industries, Llc (USA) |
| 66-3935 | Bright Lights Usa, Inc Dba Blusa Defense Manufacturing (USA) |
| 66-3935 | Johnson Manufacturing, Inc. Dba Johnson Manufacturing (USA) |
| 66-3935 | Stl Loft Metals (USA) |
| 66-3935 | Cm Manufacturing Inc Dba Cm Manufacturing Inc (USA) |
| 66-3935 | Hdi Landing Gear Usa Inc (USA) |
| 66-3935 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 66-3935 | 3/2 Design control — primary reference U.S. Government activity |
| 66-3935 | 3/2 Design control — primary reference U.S. Government activity |
| 66-3935 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-655-5863 is a Nut,plain,castellated,hexagon, manufactured by Machine Specialties, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-655-5863 has 13 manufacturer part numbers on file: 66-3935 (Machine Specialties, Llc), 66-3935 (Hydromach Inc Dba Hydromach Inc), 66-3935 (Aerometals, Inc.), 66-3935 (Logistical Support Llc), 66-3935 (Es3 Prime Logistics Group, Inc. Dba Es3 Plg) and 8 more.
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.