The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-435-7102, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-435-7102 |
| Primary Part Number | 40398-4 FN 16 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| Thread Series | UNF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 28 |
| Material | NICKEL ALLOY K-500 OVERALL |
| Bearing Surface Type | WASHER FACED OR CHAMFERED |
| 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 |
|---|---|
| 40398-4 FN 16 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 40398-4 FIND NO 16 | C/1 Advisory reference — outside the item-of-supply concept Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
NSN 5310-01-435-7102 is a Nut,plain,hexagon, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-435-7102 has 1 manufacturer part number on file: 40398-4 FN 16 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
Key specifications for 40398-4 FN 16: Thread Series: UNF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.250 INCHES IN; Thread Class: 2B. 7 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.