The Insert,screw Thread, cataloged under National Stock Number 5325-01-272-4973, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Div Tridair Products. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-272-4973 |
| Primary Part Number | MAR-10 |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Length | 0.360 INCHES NOMINAL IN |
| Insert Size | 0.375 IN. THREAD IN |
| Style Designator | KEYLOCK |
| Internal Thread Relief Depth | 0.150 INCHES NOMINAL IN |
| Full Internal Thread Length | 0.210 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 |
|---|---|
| MAR-10 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| ST34D7-4 | 5/9 Secondary reference Lockheed Martin Corp |
NSN 5325-01-272-4973 is a Insert,screw Thread, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-272-4973 has 1 manufacturer part number on file: MAR-10 (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for MAR-10: Length: 0.360 INCHES NOMINAL IN; Insert Size: 0.375 IN. THREAD IN; Style Designator: KEYLOCK; Internal Thread Relief Depth: 0.150 INCHES NOMINAL IN. 5 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.