The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-182-5252, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-182-5252 |
| Primary Part Number | F49251E5-1 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Plate Thickness | 0.036 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN |
| Nut Length | 1.396 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SHELL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.650 INCHES MAXIMUM IN |
| Mounting Hole Arrangement Style | 2 HOLES |
| Removable Nut Manufacturer Part Number | ST3M445C5M1 |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE SHELL |
| Material Document and Classification | AS35,FSCM 77535 MFR REF 1ST MATERIAL RESPONSE OR XM-28 FSCM 80393 MFR REF 2ND MATERIAL RESPONSE CLIP |
| Mounting Hole Diameter | 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Nut Counterbore Depth | 0.070 INCHES MINIMUM NUT IN |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Counterbore Diameter | 0.317 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 | 0.331 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE NUT |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING CLIP |
| Nut Mounting Provision | STRAIGHT HOLES |
| Removable Nut Manufacturer Code | 76301 |
| 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 |
|---|---|
| F49251E5-1 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M442-5A1 | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA) |
| 03A169-5A1 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| F52890-5-1 | Satair A/s (DNK) |
| F52890-5-1 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M442-5A1 PRIMARY | The Boeing Company Div Defense (USA) |
| BFN169-5-1 | Bristol Industries, Llc (USA) |
| F49251E5-1 | Satair A/s (DNK) |
| Reference | Meaning |
|---|---|
| 03A169-5A1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| NRF160C5M-1 | C/1 Advisory reference — outside the item-of-supply concept Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems |
| NS202880-5-1 | 5/2 Secondary reference U.S. Government activity |
| 10110063 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| F18427L1-5 | 5/9 Secondary reference Harvard Industries Inc |
| NS202042-054-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-182-5252 is a Nut,self-Locking,plate, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-182-5252 has 8 manufacturer part numbers on file: F49251E5-1 (Howmet Global Fastening Systems Inc), ST3M442-5A1 (Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems), 03A169-5A1 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems), F52890-5-1 (Satair A/s), F52890-5-1 (Howmet Global Fastening Systems Inc) and 3 more.
Key specifications for F49251E5-1: Lubrication: DRY FILM LUBRICANT; Plate Thickness: 0.036 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN; Nut Length: 1.396 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SHELL. 28 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.