The Pin,belt Lacing, cataloged under National Stock Number 3030-00-499-5889, is classified within Federal Supply Class 3030 (Belting, Drive Belts, Fan Belts, and Accessories) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Flexible Steel Lacing Co. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3030-00-499-5889 |
| Primary Part Number | B437 |
| Item Name | Pin,belt Lacing |
| FSC / FSG | 3030 / 30 — Belting, Drive Belts, Fan Belts, and Accessories |
| Manufacturer | Flexible Steel Lacing Co |
| Status | ACTIVE |
| Length | 1.250 INCHES NOMINAL IN |
| Diameter | 0.750 INCHES NOMINAL IN |
| Pin Type | TWO SECTION CORRUGATED ROCKER |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3030-00-499-5889 is a Pin,belt Lacing, manufactured by Flexible Steel Lacing Co, classified under FSC 3030, Belting, Drive Belts, Fan Belts, and Accessories. Status: active.
NSN 3030-00-499-5889 has 3 manufacturer part numbers on file: B437 (Flexible Steel Lacing Co), B437 (Gates Corporation), C99F1 (Fairbanks Morse, Llc).
1 possible match (shared part number, not a government interchangeability claim): 7690-01-569-7246. Verify interchangeability with system specifications before substitution.
Key specifications for B437: Length: 1.250 INCHES NOMINAL IN; Diameter: 0.750 INCHES NOMINAL IN; Pin Type: TWO SECTION CORRUGATED ROCKER; Material: STEEL. 4 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.