The Nut,self-Locking,round, cataloged under National Stock Number 5310-01-144-3926, 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 15 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-144-3926 |
| Primary Part Number | 4030T18P01 |
| Item Name | Nut,self-Locking,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Thread Series | UNJEF |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.375 INCHES IN |
| Nut Diameter | 1.725 INCHES MINIMUM AND 1.745 INCHES MAXIMUM IN |
| Drive Point Depth | 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Thickness | 0.350 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Drive Point Diameter | 0.128 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN |
| Surface Treatment | OXIDE OVERALL EXCEPT INSERT |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL 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 |
|---|---|
| 4030T18P01 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VBR10714 | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| VBR10714 | 3/9 Design control — primary reference Harvard Industries Inc |
| 10109800 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 4030T18P01 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5310-01-144-3926 is a Nut,self-Locking,round, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-144-3926 has 2 manufacturer part numbers on file: 4030T18P01 (Sps Technologies, Llc Dba PB Fasteners), VBR10714 (Esna, Llc).
Key specifications for 4030T18P01: Thread Series: UNJEF; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM; Thread Direction: RIGHT-HAND; Nominal Thread Size: 1.375 INCHES IN. 15 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.