The Gear,antibacklash,spur, cataloged under National Stock Number 3020-01-463-5527, 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 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-463-5527 |
| Primary Part Number | P21-4-64-Q12 |
| Item Name | Gear,antibacklash,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 | 0.1248 INCHES FIRST END IN |
| Teeth Quantity | 64 |
| Bore Style | PLAIN BETWEEN BODY AND FLANGE |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE HUB |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE SPRING |
| Pitch Diameter | 1.3335 INCHES NOMINAL IN |
| Nominal Outside Diameter | 1.3750 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 302 SPRING |
| Material | STEEL COMP 303 HUB |
| Face Nominal Width | 0.312 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| P21-4-64-Q12 PRIMARY | Roller Bearing Co of America, Inc Div Pic Design (USA) |
| Reference | Meaning |
|---|---|
| ES3902-009 | 5/9 Secondary reference Drs Sustainment Systems, Inc. |
| ES3902 | 7/9 Vendor item drawing reference Drs Sustainment Systems, Inc. |
NSN 3020-01-463-5527 is a Gear,antibacklash,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 3020-01-463-5527 has 1 manufacturer part number on file: P21-4-64-Q12 (Roller Bearing Co of America, Inc Div Pic Design).
Key specifications for P21-4-64-Q12: Bore Nominal Diameter: 0.1248 INCHES FIRST END IN; Teeth Quantity: 64; Bore Style: PLAIN BETWEEN BODY AND FLANGE; Nominal Distance Between Body Face and Protruding Hub End: 0.250 INCHES FIRST END IN. 13 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.
NSN 3020-01-463-5527 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.