PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S6135-20756-003Gear,spur Threaded

Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp · NSN 3020-00-939-8552 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-939-8552 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-939-8552. Primary manufacturer part number: S6135-20756-003.
Features
  • Gear,spur Threaded — FSC 3020
  • Criticality Code Justification: FEAT
  • 4 verified cross-references
  • Primary manufacturer: Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Gear,spur Threaded, cataloged under National Stock Number 3020-00-939-8552, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-939-8552
Primary Part NumberS6135-20756-003
Item NameGear,spur Threaded
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerSikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
StatusACTIVE
Criticality Code JustificationFEAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5315-00-054-59366317-1 INTERCHANGEABLE
Key,machine
Goodrich Aerospace Canada Ltd
3110-00-144-9455300060 INTERCHANGEABLE
Cup,tapered Roller Bearing
Caterpillar Inc Div Caterpillar Defense
5935-00-767-16246317-1 INTERCHANGEABLE
Connector,plug,electrical
Microwave Devices Inc
5930-00-890-4533 INTERCHANGEABLE
Switch,push
8345-01-060-8425 INTERCHANGEABLE
Flag,national
8345-01-080-6138 INTERCHANGEABLE
Flag,national
5360-01-194-467963171 INTERCHANGEABLE
Spring,helical,compression
Cummins Filtration Inc.
Cross-Reference Index
Part NumberManufacturer
999E-01804 Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA)
S6135-20756-003 PRIMARY Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA)
63171 Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA)
S6135-20756-3 Precision Gear Industries Llc (USA)
Related Parts
5315-00-054-5936INTERCHANGEABLE
KEY,MACHINE
6317-1
3110-00-144-9455INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
300060
5935-00-767-1624INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
6317-1
5930-00-890-4533INTERCHANGEABLE
SWITCH,PUSH
8345-01-060-8425INTERCHANGEABLE
FLAG,NATIONAL
8345-01-080-6138INTERCHANGEABLE
FLAG,NATIONAL
5360-01-194-4679INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
63171

Frequently Asked Questions

What is NSN 3020-00-939-8552?

NSN 3020-00-939-8552 is a Gear,spur Threaded, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-939-8552?

NSN 3020-00-939-8552 has 4 cross-referenced part numbers: 999E-01804 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), S6135-20756-003 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 63171 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), S6135-20756-3 (Precision Gear Industries Llc).

What NSN replaces 3020-00-939-8552?

There are 7 known substitutes for 3020-00-939-8552: 5315-00-054-5936, 3110-00-144-9455, 5935-00-767-1624 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S6135-20756-003?

Key specifications for S6135-20756-003: End Item Identification: HELICOPTER; SEA KING H-3; Criticality Code Justification: FEAT; Special Features: FLIGHT SAFETY CRITICAL. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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