The Insert,screw Thread, cataloged under National Stock Number 5325-00-178-6597, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-178-6597 |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Flange Diameter | 0.680 INCHES NOMINAL IN |
| Length | 0.685 INCHES NOMINAL IN |
| Flange Thickness | 0.060 INCHES NOMINAL IN |
| Insert Size | 0.375 IN. OD IN |
| Features Provided | INDIVIDUALLY KEYED |
| Nominal Thread Size | 0.250 INCHES IN |
| Full Internal Thread Length | 0.250 INCHES MINIMUM IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| SL1194-4-10 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-00-178-6597 is a Insert,screw Thread, classified under FSC 5325, Fastening Devices. Status: active.
Key specifications for 5325-00-178-6597: Flange Diameter: 0.680 INCHES NOMINAL IN; Length: 0.685 INCHES NOMINAL IN; Flange Thickness: 0.060 INCHES NOMINAL IN; Insert Size: 0.375 IN. OD IN. 11 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.