The Nonmetallic Channel, cataloged under National Stock Number 9390-01-348-9721, is classified within Federal Supply Class 9390 (Miscellaneous Fabricated Nonmetallic Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 9390-01-348-9721 |
| Primary Part Number | 1581 |
| Item Name | Nonmetallic Channel |
| FSC / FSG | 9390 / 93 — Miscellaneous Fabricated Nonmetallic Materials |
| Manufacturer | Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp |
| Status | ACTIVE |
| Length | 10.250 INCHES NOMINAL IN |
| Base Flange Thickness | 0.100 INCHES NOMINAL IN |
| Minimum Tensile Strength | ERR-060 |
| Left-Side Flange Tip Style | LEFT SQUARE END |
| Material Document and Classification | ZZ-R-765, CLASS 3B, GRADE 60 NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | OPEN CHANNEL |
| Left Side Flange Thickness | 0.060 INCHES NOMINAL IN |
| Right Side Flange Height | 0.120 INCHES NOMINAL IN |
| Right Side Flange Thickness | 0.060 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 3B CLASS AND 60 GRADE |
| Environmental Protection | FLEX RESISTANT AND TEAR |
| Material | RUBBER SILICONE CLASS Q |
| Nonmetallic Hardness Rating | 55.0 MINIMUM SHORE DUROMETER A AND 65.0 MAXIMUM SHORE DUROMETER A |
| Right-Side Flange Tip Style | RIGHT SQUARE END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1581 PRIMARY | Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp (USA) |
| Reference | Meaning |
|---|---|
| 8900945 | 7/1 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| 8900945 | 7/9 Vendor item drawing reference Litton Systems Inc Guidance and Control Systems Div |
NSN 9390-01-348-9721 is a Nonmetallic Channel, manufactured by Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp, classified under FSC 9390, Miscellaneous Fabricated Nonmetallic Materials. Status: active.
NSN 9390-01-348-9721 has 1 manufacturer part number on file: 1581 (Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp).
Key specifications for 1581: Overall Height: 0.220 INCHES NOMINAL IN; Length: 10.250 INCHES NOMINAL IN; Base Flange Thickness: 0.100 INCHES NOMINAL IN; Minimum Tensile Strength: ERR-060. 14 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.