NSN 5975-01-277-3512 — this item is cataloged by the U.S. Government under National Stock Number 5975-01-277-3512. Manufacturer of record part number: C-81815-1.
Also searched as5975-01-277-3512 ·
5975012773512 ·
NIIN 012773512 ·
01-277-3512 ·
FSC 5975 Electrical Hardware and Supplies · CAGE 04638 · C-81815-1
General Characteristics Item Description: ALL CRES CONSTRUCTION EXCEPT BRONZE RACK BACKUP AND ALUMINUM HOUSING AND COVER; 7.37 IN. LG; INTERNAL INVOLUTE SPLINE DATA: NO. OF TEETH: 19 BASED ON 20,BASE DIA: 0.5412 IN,PITCH DIA: 0.6250 IN,MAJOR DIA: 0.671 IN. MAX,MINOR DIA: 0.594/0.599 IN,PIN DIA: 0.0540 IN,EFFECTIVE LENGTH OF SPLINE: 0.63 IN IN
1 manufacturer part number on file
Manufacturer of record: Transdigm Inc
Identification
NSN: 5975-01-277-3512
NIIN: 012773512
FSC: 5975 — Electrical Hardware and Supplies
FSG: 59 — Electrical and Electronic Equipment Components
Primary part number: C-81815-1
Manufacturer: Transdigm Inc
General Description
The Gearbox Assembly, cataloged under National Stock Number 5975-01-277-3512, is classified within Federal Supply Class 5975 (Electrical Hardware and Supplies) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Transdigm Inc. Government technical data includes 1 specification, 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5975-01-277-3512
Primary Part Number
C-81815-1
Item Name
Gearbox Assembly
FSC / FSG
5975 / 59 — Electrical Hardware and Supplies
Manufacturer
Transdigm Inc
Status
ACTIVE
General Characteristics Item Description
ALL CRES CONSTRUCTION EXCEPT BRONZE RACK BACKUP AND ALUMINUM HOUSING AND COVER; 7.37 IN. LG; INTERNAL INVOLUTE SPLINE DATA: NO. OF TEETH: 19 BASED ON 20,BASE DIA: 0.5412 IN,PITCH DIA: 0.6250 IN,MAJOR DIA: 0.671 IN. MAX,MINOR DIA: 0.594/0.599 IN,PIN DIA: 0.0540 IN,EFFECTIVE LENGTH OF SPLINE: 0.63 IN IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 5975 — Electrical Hardware and Supplies
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5975-00-000-0120
MOUNTING BASE,ELECTRICAL EQUIPME
5975-00-000-0126
5975-00-000-0126 · Item name not on file
5975-00-000-7420
5975-00-000-7420 · Item name not on file
5975-00-001-1397
5975-00-001-1397 · Item name not on file
5975-00-001-1538
5975-00-001-1538 · Item name not on file
5975-00-001-1539
5975-00-001-1539 · Item name not on file
5975-00-001-1542
5975-00-001-1542 · Item name not on file
5975-00-001-2444
5975-00-001-2444 · Item name not on file
Frequently Asked Questions
What is NSN 5975-01-277-3512?
NSN 5975-01-277-3512 is a Gearbox Assembly, manufactured by Transdigm Inc, classified under FSC 5975, Electrical Hardware and Supplies. Status: active.
What part numbers are listed for NSN 5975-01-277-3512?
NSN 5975-01-277-3512 has 1 manufacturer part number on file: C-81815-1 (Transdigm Inc).
What are the specifications of C-81815-1?
Key specifications for C-81815-1: General Characteristics Item Description: ALL CRES CONSTRUCTION EXCEPT BRONZE RACK BACKUP AND ALUMINUM HOUSING AND COVER; 7.37 IN. LG; INTERNAL INVOLUTE SPLINE DATA: NO. OF TEETH: 19 BASED ON 20,BASE DIA: 0.5412 IN,PITCH DIA: 0.6250 IN,MAJOR DIA: 0.671 IN. MAX,MINOR DIA: 0.594/0.599 IN,PIN DIA: 0.0540 IN,EFFECTIVE LENGTH OF SPLINE: 0.63 IN IN; End Item Identification: T-700 ENGINE. 1 specification is documented in the U.S. Government catalog.
Is NSN 5975-01-277-3512 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.