The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-437-5676, 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 16 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-437-5676 |
| Primary Part Number | MF54343-3 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Plate Thickness | 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN |
| Nut Length | 0.525 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | PWA388 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Distance From Centerline to Flat | 0.175 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.490 INCHES NOMINAL IN |
| Material Document and Classification | AMS5525 FED SPEC SINGLE MATERIAL RESPONSE OR AMS5732 FED SPEC SINGLE MATERIAL RESPONSE OR AMS5737 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.250 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| 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 |
|---|---|
| ST5033-09 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| ST5030-09 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| MF54343-3 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST5032-09 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 5310PL0754406 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5310PL1868714 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| NS203217-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-437-5676 is a Nut,self-Locking,plate, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-437-5676 has 4 manufacturer part numbers on file: ST5033-09 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), ST5030-09 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), MF54343-3 (Howmet Global Fastening Systems Inc), ST5032-09 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-669-6696. Verify interchangeability with system specifications before substitution.
Key specifications for MF54343-3: Plate Thickness: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN; Nut Length: 0.525 INCHES NOMINAL IN; Surface Treatment Document and Classification: PWA388 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Distance From Centerline to Flat: 0.175 INCHES NOMINAL IN. 16 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.