The Wheel,conveyor,gravity, cataloged under National Stock Number 3910-00-552-3731, is classified within Federal Supply Class 3910 (Conveyors) of the Materials Handling Equipment group. The manufacturer of record is Custom Handling Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3910-00-552-3731 |
| Primary Part Number | 21Z |
| Item Name | Wheel,conveyor,gravity |
| FSC / FSG | 3910 / 39 — Conveyors |
| Manufacturer | Custom Handling Inc |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,ROLLER BEARING TYPE,1-15/16 IN. DIA,11/16 IN. WIDE,1/4 IN. AXLE DIA IN |
| 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 |
|---|---|
| 21Z PRIMARY | Custom Handling Inc (USA) |
| Reference | Meaning |
|---|---|
| BWS1937-257 | 5/9 Secondary reference Alloytek Inc |
| 21Z | 5/9 Secondary reference Standard Conveyor Co |
NSN 3910-00-552-3731 is a Wheel,conveyor,gravity, manufactured by Custom Handling Inc, classified under FSC 3910, Conveyors. Status: active.
NSN 3910-00-552-3731 has 1 manufacturer part number on file: 21Z (Custom Handling Inc).
Key specifications for 21Z: General Characteristics Item Description: STEEL,ROLLER BEARING TYPE,1-15/16 IN. DIA,11/16 IN. WIDE,1/4 IN. AXLE DIA 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.