The Insert,screw Thread, cataloged under National Stock Number 5325-01-666-1690, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-666-1690 |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Length | 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | SAE AMS2700 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Insert Size | 110,0.625-11 UNC-2A A |
| Style Designator | KEYLOCK |
| Material Document and Classification | SAE AMS5640,TYPE 1 OR ASTM A582/A582M NATIONAL SPEC 1ST MATERIAL RESPONSE OR SAE AMS5670,TYPE 2 OR SAE AMS5738 OR ASTM A582/A582M NATIONAL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Internal Thread Relief Depth | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.625 INCHES IN |
| Specification/standard Data | 96906-MS51830F GOVERNMENT SPECIFICATION |
| Full Internal Thread Length | 0.555 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 11 |
| Material | STEEL COMP 303 OR STEEL COMP 303SE OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| MS51830-110 | 2/2 Government specification standardization U.S. Government activity |
NSN 5325-01-666-1690 is a Insert,screw Thread, classified under FSC 5325, Fastening Devices. Status: active.
Key specifications for 5325-01-666-1690: Length: 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN; Surface Treatment Document and Classification: SAE AMS2700 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN; Insert Size: 110,0.625-11 UNC-2A A. 16 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.