The Block,centering, cataloged under National Stock Number 1620-01-107-6859, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 1620-01-107-6859 |
| Item Name | Block,centering |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Status | ACTIVE |
| General Characteristics Item Description | MOLDED POLYURETHANE; 52-62 DUROMETER SHORE A SCALE HARDNESS RATING; 4000-4800 PSI TENSILE STRENGTH; 4.100 IN.O/A W; 2.620 IN. O/A LG; 1.300 IN. THK 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 |
|---|---|
| 10153692 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 7-0563-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1620-01-107-6859 is a Block,centering, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5998-01-322-3340, 4820-01-433-9071, 4820-01-558-6096. Verify interchangeability with system specifications before substitution.
Key specifications for 1620-01-107-6859: General Characteristics Item Description: MOLDED POLYURETHANE; 52-62 DUROMETER SHORE A SCALE HARDNESS RATING; 4000-4800 PSI TENSILE STRENGTH; 4.100 IN.O/A W; 2.620 IN. O/A LG; 1.300 IN. THK IN. 1 specification is 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.