The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-01-504-7277, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-504-7277 |
| Primary Part Number | MS21063L4-8-7 |
| Item Name | Nut Assembly,self-Locking,gang C |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Quantity | 7 |
| Temp Rating | 250.0 FAHRENHEIT MAXIMUM DEGF |
| Hardness Rating | 49.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | ASTMA29 ASSN STD 1ST MATERIAL RESPONSE OR ASTMA827 ASSN STD 2ND MATERIAL RESPONSE OR QQ-S-700 FED SPEC 3RD MATERIAL RESPONSE OR ASTMA29 ASSN STD 4TH MATERIAL RESPONSE OR ASTMA29 ASSN STD 5TH MATERIAL RESPONSE OR ASTMA29 ASSN STD ALL MATERIAL RESPONSES OR ASTMA29 ASSN STD 6TH MATERIAL RESPONSE NUT |
| Material Document and Classification | QQ-A-250/1 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-250/4 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-250/12 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-250/13 FED SPEC 4TH MATERIAL RESPONSE CHANNEL |
| Channel Height | 0.281 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Assembly Overall Height | 0.281 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM NUT |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 1035 OR STEEL COMP 1040 OR STEEL COMP 1050 OR STEEL COMP 1042 OR STEEL COMP 4130 OR STEEL COMP 4340 OR STEEL COMP 8740 NUT |
| Material | ALUMINUM ALLOY 1100 OR ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 7075 CHANNEL |
| Nut Spacing | 1.000 INCHES NOMINAL IN |
| Channel Style | STRAIGHT TYPE |
| 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 |
|---|---|
| MS21063L4-8-7 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| MS21063L4-8-7 | 5/9 Secondary reference U.S. Government activity |
| MS21063L4-8-7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-504-7277 is a Nut Assembly,self-Locking,gang C, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-504-7277 has 1 manufacturer part number on file: MS21063L4-8-7 (The Boeing Company Div Defense).
Key specifications for MS21063L4-8-7: Lubrication: DRY FILM LUBRICANT; Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE NUT; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Quantity: 7. 21 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.