The Bar,metal, cataloged under National Stock Number 9530-00-090-9939, is classified within Federal Supply Class 9530 (Bars and Rods, Nonferrous Base Metal) of the Metal Bars, Sheets, and Shapes group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9530-00-090-9939 |
| Primary Part Number | ASTM-B138 CLASS A HARD (H04)L1 |
| Item Name | Bar,metal |
| FSC / FSG | 9530 / 95 — Bars and Rods, Nonferrous Base Metal |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Length | 8.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT |
| Heat Treatment | HARD |
| Criticality Code Justification | ZZZX |
| Material Document and Classification | QQ-B-728, CLASS A FED SPEC 1ST MATERIAL RESPONSE |
| Surface Condition | GROUND OVERALL |
| Basic Shape Style | ROUND |
| Departure From Cited Designator | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Nondefinitive Spec/std Data | A CLASS AND ROD FORM AND HARD TEMPER |
| Cross Section Outside Diameter | 4.000 INCHES NOMINAL IN |
| Material | COPPER ALLOY 675 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| ASTM-B138 CLASS A HARD (H04)L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| ROUND ROD 4 INCH DIAMETERL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| ASTMB138UNSC67500/4INRND/H04L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| ASTM-B138 UNS C67500 HARD(H04)L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| ASTMB138/CLA/4INRNDROD/HARDH04L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| ASTMB138/CLA/4INRNDROD/HARDH04 | 4/1 Identification reference U.S. Government activity |
| ASTMB138UNSC67500/4INRND/H04 | 4/1 Identification reference U.S. Government activity |
| ASTM-B138 UNS C67500 HARD(H04) | 4/1 Identification reference U.S. Government activity |
| ROUND ROD 4 INCH DIAMETER | 4/1 Identification reference U.S. Government activity |
| ASTM-B138 CLASS A HARD (H04) | 4/1 Identification reference U.S. Government activity |
NSN 9530-00-090-9939 is a Bar,metal, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 9530, Bars and Rods, Nonferrous Base Metal. Status: active.
NSN 9530-00-090-9939 has 5 manufacturer part numbers on file: ASTM-B138 CLASS A HARD (H04)L1 (Naval Inventory Control Point Mechanicsburg), ROUND ROD 4 INCH DIAMETERL1 (Naval Inventory Control Point Mechanicsburg), ASTMB138UNSC67500/4INRND/H04L1 (Naval Inventory Control Point Mechanicsburg), ASTM-B138 UNS C67500 HARD(H04)L1 (Naval Inventory Control Point Mechanicsburg), ASTMB138/CLA/4INRNDROD/HARDH04L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for ASTM-B138 CLASS A HARD (H04)L1: Length: 8.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT; Heat Treatment: HARD; Criticality Code Justification: ZZZX; Material Document and Classification: QQ-B-728, CLASS A FED SPEC 1ST MATERIAL RESPONSE. 10 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.