The Round,metal, cataloged under National Stock Number 9640-00-287-2139, is classified within Federal Supply Class 9640 (Iron and Steel Primary and Semifinished Products) of the Ores, Minerals, and Primary Products group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9640-00-287-2139 |
| Item Name | Round,metal |
| FSC / FSG | 9640 / 96 — Iron and Steel Primary and Semifinished Products |
| Status | ACTIVE |
| Length | 8.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT |
| Heat Treatment | NORMALIZED AND TEMPERED |
| Material Document and Classification | DOD-F-24669/1,GRADE 8640 MIL SPEC SINGLE MATERIAL RESPONSE |
| Basic Shape Style | ROUND |
| Weight Per Unit Measure | 1069.000 POUNDS PER LINEAR FOOT LBS |
| Specification/standard Data | 81349-MIL-S-16974 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | 8640 GRADE |
| Minimum Tensile Strength | 80000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 45000 POUNDS PER SQUARE INCH LBS |
| Cross Section Outside Diameter | 20.000 INCHES NOMINAL IN |
| Material | STEEL COMP 8640 |
| 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 |
|---|---|
| DOD-F-24669/1 | 4/1 Identification reference U.S. Government activity |
| MIL-S-16974 | 5/9 Secondary reference U.S. Government activity |
NSN 9640-00-287-2139 is a Round,metal, classified under FSC 9640, Iron and Steel Primary and Semifinished Products. Status: active.
Key specifications for 9640-00-287-2139: Length: 8.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT; Heat Treatment: NORMALIZED AND TEMPERED; Material Document and Classification: DOD-F-24669/1,GRADE 8640 MIL SPEC SINGLE MATERIAL RESPONSE; Basic Shape Style: ROUND. 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.