The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-630-7240, 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 21 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-630-7240 |
| Primary Part Number | MK2001-4BAC |
| 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 | 0.055 INCHES MAXIMUM IN |
| Nut Length | 0.603 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2700,TY 2 OR TY 8 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Distance From Mounting Hole Center to Base | 0.100 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.414 INCHES MAXIMUM IN |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Mounting Hole Arrangement Style | 1 HOLE |
| Material Document and Classification | AMS 5525,A286 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Mounting Hole Diameter | 0.098 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Locking Feature | FREE-RUNNING ALL METAL DESIGN OR PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.281 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| MK2001-4BAC PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BRM100C4M | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA) |
| T8081C428 PRIMARY | Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace (USA) |
| Reference | Meaning |
|---|---|
| VN201D1-048 | 5/2 Secondary reference U.S. Government activity |
| NS103198SE048 | 3/2 Design control — primary reference U.S. Government activity |
| BACN10JP4BCM | 3/2 Design control — primary reference U.S. Government activity |
| 109A9207M4 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-630-7240 is a Nut,self-Locking,plate, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-630-7240 has 3 manufacturer part numbers on file: MK2001-4BAC (Howmet Global Fastening Systems Inc), BRM100C4M (Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems), T8081C428 (Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace).
Key specifications for MK2001-4BAC: Lubrication: DRY FILM LUBRICANT; Plate Thickness: 0.055 INCHES MAXIMUM IN; Nut Length: 0.603 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS 2700,TY 2 OR TY 8 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 21 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.