The Nut,plain,round, cataloged under National Stock Number 5310-00-173-7532, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Preci-Manufacturing, Incorporated. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-173-7532 |
| Primary Part Number | 4020T42P01 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Preci-Manufacturing, Incorporated |
| Status | ACTIVE |
| Thread Series | UNJS |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM NUT IN |
| Drive Point Width | 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 4.325 INCHES IN |
| Nut Diameter | 4.645 INCHES MINIMUM AND 4.655 INCHES MAXIMUM IN |
| Counterbore Diameter | 4.360 INCHES MINIMUM AND 4.377 INCHES MAXIMUM NUT IN |
| Drive Point Depth | 0.375 INCHES NOMINAL IN |
| Nut Thickness | 0.500 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN |
| Drive Point Quantity | 21 |
| Nut Style | ROUND |
| Thread Class | 3BG |
| Thread Quantity Per Inch | 24 |
| Material | IRON ALLOY 660 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 4020T42P01 | Preci-Manufacturing, Incorporated (USA) |
| 4020T42P01 | Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc (USA) |
| Reference | Meaning |
|---|---|
| 4020T42P01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-173-7532 is a Nut,plain,round, manufactured by Preci-Manufacturing, Incorporated, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-173-7532 has 2 manufacturer part numbers on file: 4020T42P01 (Preci-Manufacturing, Incorporated), 4020T42P01 (Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc).
Key specifications for 4020T42P01: Thread Series: UNJS; Material Document and Classification: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Nut Counterbore Depth: 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM NUT IN; Drive Point Width: 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM 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.