The Tubing,glass, cataloged under National Stock Number 9340-01-370-3653, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Corning Glass Works. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-01-370-3653 |
| Primary Part Number | 624690 |
| Item Name | Tubing,glass |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Corning Glass Works |
| Status | ACTIVE |
| Overall Diameter | 0.750 INCHES NOMINAL IN |
| Material Transparency | CLEAR |
| Style Designator | TUBING |
| Material Document and Classification | MIL-G-2695 MIL SPEC SINGLE MATERIAL RESPONSE |
| Wall Thickness | 0.109 INCHES NOMINAL IN |
| Color | RED |
| Bore Diameter | 0.532 INCHES NOMINAL IN |
| Material | GLASS BOROSILICATE |
| 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 |
|---|---|
| 624690 PRIMARY | Corning Glass Works (USA) |
| Reference | Meaning |
|---|---|
| 3/4X16IN PYREX RED | 5/9 Secondary reference Essex Brass Corporation |
| PYREX GLASS | 5/9 Secondary reference Essex Brass Corporation |
NSN 9340-01-370-3653 is a Tubing,glass, manufactured by Corning Glass Works, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-01-370-3653 has 1 manufacturer part number on file: 624690 (Corning Glass Works).
Key specifications for 624690: Overall Diameter: 0.750 INCHES NOMINAL IN; Material Transparency: CLEAR; Style Designator: TUBING; Material Document and Classification: MIL-G-2695 MIL SPEC SINGLE MATERIAL RESPONSE. 8 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.