The Pulley,flat, cataloged under National Stock Number 3020-01-078-1877, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Skyline Industries, Inc. Government technical data includes 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-078-1877 |
| Primary Part Number | 917883-1 |
| Item Name | Pulley,flat |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Skyline Industries, Inc |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.160 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Flange Quantity | 2 |
| Outside Diameter | 0.321 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | L-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.380 INCHES NOMINAL IN |
| Rim Type | SOLID |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Keying Facility | NOT INCLUDED |
| Flange Width | 0.060 INCHES NOMINAL IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.243 INCHES NOMINAL IN |
| Material | PLASTIC POLYHEXAMETHYLENE AMIDE OR PLASTIC POLYHEXAMETHYLENE ADIPAMIDE OR PLASTIC POLYCAPROLACTAM OR PLASTIC POLYHEXAMETHYLENE SEBACAMIDE OVERALL |
| Flange Location | OUTSIDE |
| Crown Face | NOT INCLUDED |
| Face Width | 0.160 INCHES NOMINAL IN |
| Lightening Hole | NOT INCLUDED |
| 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 |
|---|---|
| 917883-1 PRIMARY | Skyline Industries, Inc (USA) |
| Reference | Meaning |
|---|---|
| 917883-1 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-078-1877 is a Pulley,flat, manufactured by Skyline Industries, Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-078-1877 has 1 manufacturer part number on file: 917883-1 (Skyline Industries, Inc).
Key specifications for 917883-1: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED; Bore Length: 0.160 INCHES NOMINAL IN. 22 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.