The Nut,plain,knurled, cataloged under National Stock Number 5310-01-025-1787, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-025-1787 |
| Primary Part Number | 4092 |
| Item Name | Nut,plain,knurled |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Roller Bearing Co of America, Inc Div Pic Design |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Nut Diameter | 1.005 INCHES NOMINAL IN |
| Nut Thickness | 0.496 INCHES NOMINAL IN |
| Small End Length | 0.248 INCHES NOMINAL IN |
| Small End Diameter | 0.501 INCHES NOMINAL IN |
| Nut Style | KNURLED |
| Thread Class | 2B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Knurl Width | 0.227 INCHES NOMINAL IN |
| 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 |
|---|---|
| 2132961-5 | Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div (USA) |
| 4092 PRIMARY | Roller Bearing Co of America, Inc Div Pic Design (USA) |
| Reference | Meaning |
|---|---|
| 322314-1 | 7/2 Vendor item drawing reference U.S. Government activity |
| 2132961-5 | 5/9 Secondary reference The Boeing Company Div Defense |
| 536291-23 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-01-025-1787 is a Nut,plain,knurled, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-025-1787 has 2 manufacturer part numbers on file: 2132961-5 (Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div), 4092 (Roller Bearing Co of America, Inc Div Pic Design).
2 possible matches (shared part number, not a government interchangeability claim): 3010-01-347-4639, 9390-01-485-4650. Verify interchangeability with system specifications before substitution.
Key specifications for 4092: Thread Series: UNIFIED NATIONAL COARSE (UNC); Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.250 INCHES IN; Nut Diameter: 1.005 INCHES NOMINAL IN. 12 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.