The Nut,self-Locking,barrel, cataloged under National Stock Number 5310-01-047-9467, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-047-9467 |
| Primary Part Number | 25N127-4 |
| Item Name | Nut,self-Locking,barrel |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Nut Length | 0.625 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 500.0 FAHRENHEIT NOMINAL DEGF |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE LOCKING INSERT |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Nut Diameter | 0.525 INCHES MINIMUM AND 0.528 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.406 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Nut Style | FLOATING SELF-LOCKING BARREL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 4340 LOCKING INSERT |
| Barrel Height | 0.320 INCHES NOMINAL 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 |
|---|---|
| 25N127-4 | Northrop Grumman Systems Corporation (USA) |
| 84146-428 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| SLN171-4 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| ST3M738-4 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 80227-428 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| B12707-4 | 5/9 Secondary reference U.S. Government activity |
| SL-405-4F | 5/2 Secondary reference U.S. Government activity |
| F51423-4 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| B12707-4 | 5/9 Secondary reference Amerace Corp Esna Div |
| 80227-428 | 5/9 Secondary reference U.S. Government activity |
| 25N127-4 | 7/9 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| SL4109-4-P-NOR | 3/2 Design control — primary reference U.S. Government activity |
| 25N127-4 | 5/9 Secondary reference Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 10122046 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 7685-65987-001 | 5/9 Secondary reference Hughes Missile Systems Co San Diego |
| STM733-4 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 5310-01-047-9467 is a Nut,self-Locking,barrel, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-047-9467 has 4 manufacturer part numbers on file: 25N127-4 (Northrop Grumman Systems Corporation), 84146-428 (Sps Technologies, Llc Dba PB Fasteners), SLN171-4 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), ST3M738-4 (The Boeing Company Div Defense).
Key specifications for 25N127-4: Lubrication: DRY FILM LUBRICANT; Nut Length: 0.625 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 19 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.