The Insert,screw Thread, cataloged under National Stock Number 5325-00-451-8285, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Groov-Pin Corp. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-00-451-8285 |
| Primary Part Number | HM25028-18 |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Groov-Pin Corp |
| Status | ACTIVE |
| Length | 0.375 INCHES NOMINAL IN |
| Insert Size | 3/8-20 UN NOM-STD |
| Style Designator | PLAIN |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Features Provided | INDIVIDUALLY KEYED |
| Nominal Thread Size | 0.250 INCHES IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 1117 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 |
| Part Number | Manufacturer |
|---|---|
| HM25028-18 | Groov-Pin Corp (USA) |
| Reference | Meaning |
|---|---|
| SMD413907-12 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-00-451-8285 is a Insert,screw Thread, manufactured by Groov-Pin Corp, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-451-8285 has 1 manufacturer part number on file: HM25028-18 (Groov-Pin Corp).
Key specifications for HM25028-18: Length: 0.375 INCHES NOMINAL IN; Insert Size: 3/8-20 UN NOM-STD; Style Designator: PLAIN; Material Document and Classification: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.