The Gear,spur, cataloged under National Stock Number 3020-01-141-0258, 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 Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 19 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 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 | 3020-01-141-0258 |
| Primary Part Number | H53-88 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Roller Bearing Co of America, Inc Div Pic Design |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.124 INCHES BOTH ENDS0.124 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.188 INCHES FIRST END0.188 INCHES FIRST END IN |
| Teeth Quantity | 8888 |
| Clamping Surface Nominal Length | 0.250 INCHES FIRST END0.250 INCHES FIRST END IN |
| Body Style | PLAIN, SOLIDPLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDSPLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.281 INCHES FIRST END0.281 INCHES FIRST END IN |
| Nominal Overall Length | 0.406 INCHES0.406 INCHES IN |
| Style Designator | PROTRUDING HUBPROTRUDING HUB |
| Bore Nominal Depth | 0.406 INCHES BOTH ENDS0.406 INCHES BOTH ENDS IN |
| Material Document and Classification | AISI 303 FED STD SINGLE MATERIAL RESPONSE OVERALLAISI 303 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.7500 INCHES NOMINAL1.7500 INCHES NOMINAL IN |
| Tooth Form | STANDARDSTANDARD |
| Hub Style Designator | SPLIT FIRST ENDSPLIT FIRST END |
| Nominal Outside Diameter | 1.813 INCHES1.813 INCHES IN |
| Surface Treatment | PASSIVATE OVERALLPASSIVATE OVERALL |
| Pressure Angle | 20.0000 DEGREES20.0000 DEGREES |
| Material | STEEL COMP 303 OVERALL |
| Face Nominal Width | 0.125 INCHES0.125 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 |
| Part Number | Manufacturer |
|---|---|
| H53-88 PRIMARY | Roller Bearing Co of America, Inc Div Pic Design (USA) |
NSN 3020-01-141-0258 is a Gear,spur, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-141-0258 has 1 manufacturer part number on file: H53-88 (Roller Bearing Co of America, Inc Div Pic Design).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-382-0037. Verify interchangeability with system specifications before substitution.
Key specifications for H53-88: Bore Nominal Diameter: 0.124 INCHES BOTH ENDS0.124 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.188 INCHES FIRST END0.188 INCHES FIRST END IN; Teeth Quantity: 8888; Clamping Surface Nominal Length: 0.250 INCHES FIRST END0.250 INCHES FIRST END IN. 19 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.