The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-241-2679, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Monadnock Company, the Dba Lisi Aerospace. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-241-2679 |
| Primary Part Number | 5300012-20A |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Monadnock Company, the Dba Lisi Aerospace |
| Status | ACTIVE |
| Plate Thickness | 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Nut Length | 1.260 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE SHELL |
| Distance From Mounting Hole Center to Base | 0.250 INCHES NOMINAL IN |
| Thread Series | UNF |
| Plate Width | 1.570 INCHES MAXIMUM IN |
| Mounting Hole Arrangement Style | 3 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,T6 FED SPEC ALL MATERIAL RESPONSES SHELL |
| 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 | 1.000 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.190 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH METALLIC INSERT |
| Center to Center Distance Between Mounting Holes Along Length | 0.555 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN |
| Surface Treatment | CHROMATE SHELL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 304 LOCKING INSERT |
| Material | ALUMINUM ALLOY 2219 OR ALUMINUM ALLOY 2014 SHELL |
| 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 |
|---|---|
| 5300012-20A | Monadnock Company, the Dba Lisi Aerospace (USA) |
| Reference | Meaning |
|---|---|
| WSI-333A-20 | 5/2 Secondary reference U.S. Government activity |
| ST4M133-3-20 | 5/9 Secondary reference The Boeing Company Div Defense |
| WSI333-20D | 3/9 Design control — primary reference Atlas Corp Western Sky Industries Div |
NSN 5310-01-241-2679 is a Nut,self-Locking,plate, manufactured by Monadnock Company, the Dba Lisi Aerospace, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-241-2679 has 1 manufacturer part number on file: 5300012-20A (Monadnock Company, the Dba Lisi Aerospace).
Key specifications for 5300012-20A: Plate Thickness: 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Nut Length: 1.260 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE SHELL; 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.