The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-113-4206, 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 14 specifications, cited from the U.S. Government catalog. The record lists 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-113-4206 |
| Primary Part Number | T4590-428 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems |
| Status | ACTIVE |
| Washer Outside Diameter | 0.416 INCHES MAXIMUM IN |
| Width Across Flats | 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 900.0 FAHRENHEIT NOMINAL DEGF |
| Washer Thickness | 0.038 INCHES MINIMUM IN |
| Material Document and Classification | AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| 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 |
|---|---|
| 6828832-428 | Rolls-Royce Corporation (USA) |
| 6843623-428 | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| T4590-428 PRIMARY | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA) |
| 6343619-048 | Rolls-Royce Corporation (USA) |
| 57587-428 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 6843623-428 | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| T4590-428 | 5/9 Secondary reference Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace |
| T4590-428 | 5/9 Secondary reference Republic Fastener Mfg. Corp. Use CAGE Code 52828 for Cataloging. |
| LH6399-048 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-00-113-4206 is a Nut,self-Locking,extended Washer, manufactured by Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-113-4206 has 6 manufacturer part numbers on file: 6828832-428 (Rolls-Royce Corporation), 6843623-428 (Allison Transmission Inc Dba Allison Transmission, Inc), T4590-428 (Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems), 6343619-048 (Rolls-Royce Corporation), 57587-428 (Sps Technologies, Llc Dba PB Fasteners) and 1 more.
1 possible match (shared part number, not a government interchangeability claim): 5310-00-913-7316. Verify interchangeability with system specifications before substitution.
Key specifications for T4590-428: Overall Height: 0.204 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN; Washer Outside Diameter: 0.416 INCHES MAXIMUM IN; Width Across Flats: 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 14 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.