The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-128-6673, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-128-6673 |
| Primary Part Number | ST4M132-3-20 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Plate Thickness | 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Nut Length | 0.700 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| Distance From Mounting Hole Center to Base | 0.250 INCHES NOMINAL IN |
| Thread Series | UNF |
| Plate Width | 1.570 INCHES MAXIMUM IN |
| Temp Rating | 300.0 FAHRENHEIT MAXIMUM DEGF |
| Mounting Hole Arrangement Style | 2 HOLES |
| Distance From Base to Center of Aperture | 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 7245 ASSN STD SINGLE MATERIAL RESPONSE LOCKING INSERT |
| Material Document and Classification | QQ-A-367,TEMPER T6 FED SPEC ALL MATERIAL RESPONSES OVERALL EXCEPT INSERT |
| Mounting Hole Diameter | 0.123 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Center to Center Distance Between Mounting Holes Along Width | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.190 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.640 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN |
| Surface Treatment | CHROMATE OVERALL EXCEPT INSERT |
| Nut Style | PLATE |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING LOCKING INSERT |
| Material | ALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2219 OVERALL EXCEPT INSERT |
| 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 |
|---|---|
| ST4M132-3-20 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| WSI-332-20D | 3/9 Design control — primary reference Atlas Corp Western Sky Industries Div |
| 10109497 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5310-01-128-6673 is a Nut,self-Locking,plate, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-128-6673 has 1 manufacturer part number on file: ST4M132-3-20 (The Boeing Company Div Defense).
Key specifications for ST4M132-3-20: Plate Thickness: 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Nut Length: 0.700 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT; Distance From Mounting Hole Center to Base: 0.250 INCHES NOMINAL IN. 23 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.