PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40559Lock Spring,turnlock Fastener

Eaton Aerospace, Llc Dba Jackson South · NSN 5325-01-191-3029 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-01-191-3029 — this item is cataloged by the U.S. Government under National Stock Number 5325-01-191-3029. Primary manufacturer part number: 40559.
Features
  • Lock Spring,turnlock Fastener — FSC 5325
  • 2 verified cross-references
  • Primary manufacturer: Eaton Aerospace, Llc Dba Jackson South
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Lock Spring,turnlock Fastener, cataloged under National Stock Number 5325-01-191-3029, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameLock Spring,turnlock Fastener
FSC / FSG5325 — No Item Name Available (FSG 53)
ManufacturersHampton Hydraulics, Llc. Dba Great Bend Industries Div Hampton Hydraulics, Llc. (CAGE 62982); Eaton Aerospace, Llc Dba Jackson South (CAGE 62983)
Technical Specifications
ParameterValue
NSN5325-01-191-3029
Primary Part Number40559
Item NameLock Spring,turnlock Fastener
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerEaton Aerospace, Llc Dba Jackson South
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5940-00-088-1940 INTERCHANGEABLE
Terminal Board
3455-00-243-217611830 INTERCHANGEABLE
Cutter,milling,woodruff Keyseat
Niagara Cutter Inc
5325-00-445-417140S5-9 INTERCHANGEABLE
Stud Assembly,turnlock Fastener
Howmet Global Fastening Systems Inc Div Camloc Products
9505-01-191-303040558 INTERCHANGEABLE
Wire,nonelectrical
Eaton Aerospace, Llc Dba Jackson South
3030-01-386-1767R5-SE-36/900 INTERCHANGEABLE
Belt Fastener,plate
Flexible Steel Lacing Co
Cross-Reference Index
Part NumberManufacturer
71602-1 PIECE 4 Hampton Hydraulics, Llc. Dba Great Bend Industries Div Hampton Hydraulics, Llc. (USA)
40559 PRIMARY Eaton Aerospace, Llc Dba Jackson South (USA)
Related Parts
5940-00-088-1940INTERCHANGEABLE
TERMINAL BOARD
3455-00-243-2176INTERCHANGEABLE
CUTTER,MILLING,WOODRUFF KEYSEAT
11830
5325-00-445-4171INTERCHANGEABLE
STUD ASSEMBLY,TURNLOCK FASTENER
40S5-9
9505-01-191-3030INTERCHANGEABLE
WIRE,NONELECTRICAL
40558
3030-01-386-1767INTERCHANGEABLE
BELT FASTENER,PLATE
R5-SE-36/900

Frequently Asked Questions

What is NSN 5325-01-191-3029?

NSN 5325-01-191-3029 is a Lock Spring,turnlock Fastener, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-01-191-3029?

NSN 5325-01-191-3029 has 2 cross-referenced part numbers: 71602-1 PIECE 4 (Hampton Hydraulics, Llc. Dba Great Bend Industries Div Hampton Hydraulics, Llc.), 40559 (Eaton Aerospace, Llc Dba Jackson South).

What NSN replaces 5325-01-191-3029?

There are 5 known substitutes for 5325-01-191-3029: 5940-00-088-1940, 3455-00-243-2176, 5325-00-445-4171 and 2 more. Verify interchangeability with system specifications before substitution.

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