The Belt,flat, cataloged under National Stock Number 3030-01-349-9057, is classified within Federal Supply Class 3030 (Belting, Drive Belts, Fan Belts, and Accessories) of the Mechanical Power Transmission Equipment group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3030-01-349-9057 |
| Item Name | Belt,flat |
| FSC / FSG | 3030 / 30 — Belting, Drive Belts, Fan Belts, and Accessories |
| Status | ACTIVE |
| Nominal Inside Circumference | 4.515 INCHES IN |
| Usage Design | TRANSMITTING POWER |
| Style Designator | CONE SHAPE |
| Material Document and Classification | MIL-P-46112,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Width | 0.180 INCHES IN |
| Material | PLASTIC POLYIMIDE OVERALL |
| Nominal Thickness | 0.003 INCHES IN |
| 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 |
|---|---|
| 1377143 | D/9 Drawing number reference only U.S. Government activity |
| 1377143-2 | 1/2 Source control — Government-approved source U.S. Government activity |
| 1377143-2 D-BELT | 3/9 Design control — primary reference Butler Precision Belting Inc Dba Bpb |
| 1377143-2 | 5/9 Secondary reference U.S. Government activity |
NSN 3030-01-349-9057 is a Belt,flat, classified under FSC 3030, Belting, Drive Belts, Fan Belts, and Accessories. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3030-01-350-6965, 3030-01-351-5233. Verify interchangeability with system specifications before substitution.
Key specifications for 3030-01-349-9057: Nominal Inside Circumference: 4.515 INCHES IN; Usage Design: TRANSMITTING POWER; Style Designator: CONE SHAPE; Material Document and Classification: MIL-P-46112,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 7 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.