The Nut,plain,round, cataloged under National Stock Number 5310-01-178-3320, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Goodrich Corporation. Government technical data includes 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-178-3320 |
| Primary Part Number | 1881-125 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Goodrich Corporation |
| Status | ACTIVE |
| Hole Thread Quantity Per Inch | 32 |
| Surface Treatment Document and Classification | CPC8225,13002 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Surface Treatment Document and Classification | FED-STD-593 FED STD 1ST TREATMENT RESPONSE AND MIL-P-23377 MIL SPEC 2ND TREATMENT RESPONSE OVERALL EXCEPT THREADS |
| Thread Series | UNIFIED NATIONAL JOINT (UNJ) |
| Hole Configuration Style | CONFIGURATION F |
| Material Document and Classification | MIL-S-8844,CL 3,300M MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Drive Point Width | 0.440 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 3.500 INCHES IN |
| Nut Diameter | 4.438 INCHES NOMINAL IN |
| Drive Point Depth | 0.180 INCHES NOMINAL IN |
| Nut Thickness | 0.688 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND TITANIUM OVERALL |
| Surface Treatment | ENAMEL AND PRIMER OVERALL EXCEPT THREADS |
| Drive Point Quantity | 2 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Hole Nominal Thread Diameter | 0.190 INCHES IN |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Hole Type and Quantity | 6 TAPPED |
| 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 |
|---|---|
| 1881-125 PRIMARY | Goodrich Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1881-125 | 3/9 Design control — primary reference Goodrich Corporation Div Advanced Structures Landing Systems |
NSN 5310-01-178-3320 is a Nut,plain,round, manufactured by Goodrich Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-178-3320 has 1 manufacturer part number on file: 1881-125 (Goodrich Corporation).
Key specifications for 1881-125: Hole Thread Quantity Per Inch: 32; Surface Treatment Document and Classification: CPC8225,13002 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Surface Treatment Document and Classification: FED-STD-593 FED STD 1ST TREATMENT RESPONSE AND MIL-P-23377 MIL SPEC 2ND TREATMENT RESPONSE OVERALL EXCEPT THREADS; Thread Series: UNIFIED NATIONAL JOINT (UNJ). 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.