NSN 5310-01-670-9012 · NIIN 016709012 · Part number 91559-1
Marathonnorco Aerospace, Inc. · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 08844
Government record, cited
NSN 5310-01-670-9012 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-670-9012. Manufacturer of record part number: 91559-1.
Also searched as5310-01-670-9012 ·
5310016709012 ·
NIIN 016709012 ·
01-670-9012 ·
FSC 5310 Nuts and Washers · CAGE 08844 · 91559-1
Manufacturer of record: Marathonnorco Aerospace, Inc.
Identification
NSN: 5310-01-670-9012
NIIN: 016709012
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 91559-1
Manufacturer: Marathonnorco Aerospace, Inc.
General Description
The Locknut,shear Pin, cataloged under National Stock Number 5310-01-670-9012, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Marathonnorco Aerospace, Inc.. The record lists 2 manufacturer part numbers 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.
Technical Specifications
Parameter
Value
NSN
5310-01-670-9012
Primary Part Number
91559-1
Item Name
Locknut,shear Pin
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Marathonnorco Aerospace, Inc.
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items1
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-01-709-026591559-1POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Eaton Corp Dba Eaton Aerospace Jackson
NSN 5310-01-670-9012 is a Locknut,shear Pin, manufactured by Marathonnorco Aerospace, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-670-9012?
NSN 5310-01-670-9012 has 2 manufacturer part numbers on file: 91559-1 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 91559-1 (Marathonnorco Aerospace, Inc.).
What NSN replaces 5310-01-670-9012?
1 possible match (shared part number, not a government interchangeability claim): 3040-01-709-0265. Verify interchangeability with system specifications before substitution.
What are the specifications of 91559-1?
Key specifications for 91559-1: End Item Identification: CH-53K SIKORSKY HEAVY LIFT HELICOPTER. 0 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-670-9012 hazardous material?
No hazard code in the DLA record (HMIC N). 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.