The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-049-3012, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-049-3012 |
| Primary Part Number | BRF120A4-4 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Plate Thickness | 0.019 INCHES MINIMUM IN |
| Nut Length | 1.306 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.531 INCHES MAXIMUM IN |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Mounting Hole Diameter | 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Counterbore Diameter | 0.250 INCHES MINIMUM NUT IN |
| Distance From Aperture Center to Mounting Hole Center | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Center to Center Distance Between Mounting Holes Along Length | 0.310 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN |
| Nut Height | 0.481 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 1030 OR STEEL COMP 1033 OR STEEL COMP 1035 OR STEEL COMP 1536 OR STEEL COMP 1037 OR STEEL COMP 1039 OR STEEL COMP 1040 OR STEEL COMP 1541 OR STEEL COMP 1042 OR STEEL COMP 1043 OR STEEL COMP 1044 OR STEEL COMP 1045 OR STEEL COMP 1046 OR STEEL COMP 1548 OR STEEL COMP 1049 OR STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OVERALL |
| Nut Mounting Provision | STRAIGHT HOLES |
| 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 |
|---|---|
| BRF120A4-4 PRIMARY | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA) |
| F1972-4-4BAC PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| VN181A048-4 | 3/2 Design control — primary reference U.S. Government activity |
| NS103220-048-4 | 3/2 Design control — primary reference U.S. Government activity |
| RM9202-4-4 | 5/9 Secondary reference Harvard Industries Inc |
| RM9202-4-4 | 5/9 Secondary reference Esna, Llc |
| BACN10JS4B4 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-049-3012 is a Nut,self-Locking,plate, manufactured by Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-049-3012 has 2 manufacturer part numbers on file: BRF120A4-4 (Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems), F1972-4-4BAC (Howmet Global Fastening Systems Inc).
Key specifications for BRF120A4-4: Lubrication: DRY FILM LUBRICANT; Plate Thickness: 0.019 INCHES MINIMUM IN; Nut Length: 1.306 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 22 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.