The Gear Rack, cataloged under National Stock Number 3020-01-173-1331, 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 General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-173-1331 |
| Primary Part Number | 77C715151P001 |
| Item Name | Gear Rack |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp |
| Status | ACTIVE |
| Teeth Quantity | 63 |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Nominal Distance From End to First Mounting Hole Center | 1.242 INCHES TRANSVERSELY THROUGH BOTTOM IN |
| Nominal Distance From End to First Mounting Hole Center | 3.142 INCHES TRANSVERSELY THROUGH SIDE IN |
| Pitch Height | 1.0685 INCHES NOMINAL IN |
| Mounting Hole Type and Quantity | 2 PLAIN TRANSVERSELY THROUGH SIDE |
| Mounting Hole Type and Quantity | 8 THREADED TRANSVERSELY THROUGH BOTTOM |
| Mounting Hole Nominal Diameter | 0.296 INCHES TRANSVERSELY THROUGH SIDE IN |
| Teeth Type | SPUR |
| Nominal Overall Length | 39.584 INCHES IN |
| Style Designator | SQUARE OR RECTANGULAR |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Tooth Form | STANDARD |
| Mounting Hole Nominal Thread Size | 0.250 INCHES TRANSVERSELY THROUGH BOTTOM IN |
| Nominal Distance From Mounting Hole Center to Bottom | 0.750 INCHES TRANSVERSELY THROUGH SIDE IN |
| Surface Treatment | OXIDE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 630 OVERALL |
| Center to Center Nominal Distance Between Mounting Holes | 6.275 INCHES TRANSVERSELY THROUGH BOTTOM IN |
| Mounting Hole Thread Series Designator | UNF TRANSVERSELY THROUGH BOTTOM |
| Nominal Thickness | 1.210 INCHES IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 1.500 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 |
|---|---|
| 77C715151P001 PRIMARY | General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp (USA) |
| 77C715151P001 | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 77C715151 | D/9 Drawing number reference only Lockheed Martin Corporation Div Rms |
NSN 3020-01-173-1331 is a Gear Rack, manufactured by General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-173-1331 has 2 manufacturer part numbers on file: 77C715151P001 (General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp), 77C715151P001 (Lockheed Martin Corporation Div Rms).
Key specifications for 77C715151P001: Teeth Quantity: 63; Surface Treatment Document and Classification: MIL-C-13924,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Nominal Distance From End to First Mounting Hole Center: 1.242 INCHES TRANSVERSELY THROUGH BOTTOM IN; Nominal Distance From End to First Mounting Hole Center: 3.142 INCHES TRANSVERSELY THROUGH SIDE IN. 23 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.