The Nut,plain,slotted,hexagon, cataloged under National Stock Number 5310-01-120-5124, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 14 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-120-5124 |
| Primary Part Number | 74640-10 |
| Item Name | Nut,plain,slotted,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Width Across Flats | 0.986 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hardness Rating | 27.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.625 INCHES IN |
| Nut Height | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Countersink Angle | 109.75 DEGREES MINIMUM AND 110.25 DEGREES MAXIMUM NUT |
| Nut Style | SLOTTED, HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Bearing Surface Type | WASHER FACED |
| 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 |
|---|---|
| 74640-10 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| E10079-10 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 93434-10 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 10109363 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| ST3M404 | 5/1 Secondary reference The Boeing Company Div Defense |
| ST3M404-10 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| E10079-10 | 5/9 Secondary reference Harvard Industries Inc |
| ST3M404-10 | 3/2 Design control — primary reference U.S. Government activity |
| 3D0236-10 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-120-5124 is a Nut,plain,slotted,hexagon, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-120-5124 has 3 manufacturer part numbers on file: 74640-10 (Sps Technologies, Llc Dba PB Fasteners), E10079-10 (Sps Technologies, Llc Dba PB Fasteners), 93434-10 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 74640-10: Width Across Flats: 0.986 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Hardness Rating: 27.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM. 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.