PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4159Screw,externally Relieved Body

Unicorp. · NSN 5305-01-345-7880 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-345-7880 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-345-7880. Primary manufacturer part number: 4159.
Features
  • Screw,externally Relieved Body — FSC 5305
  • Specification/standard Data: 54497-0441C0121-59 MANUFACTURERS STANDARD
  • 3 verified cross-references
  • Primary manufacturer: Unicorp.
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-345-7880, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Unicorp.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-345-7880
Primary Part Number4159
Item NameScrew,externally Relieved Body
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerUnicorp.
StatusACTIVE
Specification/standard Data54497-0441C0121-59 MANUFACTURERS STANDARD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4720-00-181-4330 INTERCHANGEABLE
Hose,nonmetallic
5305-00-349-81324159 INTERCHANGEABLE
Screw,runner Tension
Wakmann Watch Company Inc
5340-00-598-99804159 INTERCHANGEABLE
Strap,retaining
Abb Installation Products Inc
6125-00-635-5480 INTERCHANGEABLE
Dynamotor
1730-01-084-85138925-010 INTERCHANGEABLE
Jack,aircraft Landing Gear
Columbus Jack Corporation Div Columbus Jack
2530-01-235-5767 INTERCHANGEABLE
Cap,grease
5935-01-368-7340 INTERCHANGEABLE
Connector,receptacle,electrical
5325-01-436-8597 INTERCHANGEABLE
Ring,retaining
6130-01-558-8647CA-1550-CML INTERCHANGEABLE
Charger,battery
Lamar Technologies Llc
7050-01-686-12774159 INTERCHANGEABLE
Converter,digital to Analog
Electro Standards Laboratory, Inc.
Cross-Reference Index
Part NumberManufacturer
0441C0121-59 Lockheed Martin Corporation Div Rms (USA)
0441C0121-59 Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems (USA)
4159 PRIMARY Unicorp. (USA)
Related Parts
4720-00-181-4330INTERCHANGEABLE
HOSE,NONMETALLIC
5305-00-349-8132INTERCHANGEABLE
SCREW,RUNNER TENSION
4159
5340-00-598-9980INTERCHANGEABLE
STRAP,RETAINING
4159
6125-00-635-5480INTERCHANGEABLE
DYNAMOTOR
1730-01-084-8513INTERCHANGEABLE
JACK,AIRCRAFT LANDING GEAR
8925-010
2530-01-235-5767INTERCHANGEABLE
CAP,GREASE
5935-01-368-7340INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5325-01-436-8597INTERCHANGEABLE
RING,RETAINING
6130-01-558-8647INTERCHANGEABLE
CHARGER,BATTERY
CA-1550-CML
7050-01-686-1277INTERCHANGEABLE
CONVERTER,DIGITAL TO ANALOG
4159

Frequently Asked Questions

What is NSN 5305-01-345-7880?

NSN 5305-01-345-7880 is a Screw,externally Relieved Body, manufactured by Unicorp., classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-345-7880?

NSN 5305-01-345-7880 has 3 cross-referenced part numbers: 0441C0121-59 (Lockheed Martin Corporation Div Rms), 0441C0121-59 (Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems), 4159 (Unicorp.).

What NSN replaces 5305-01-345-7880?

There are 10 known substitutes for 5305-01-345-7880: 4720-00-181-4330, 5305-00-349-8132, 5340-00-598-9980 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4159?

Key specifications for 4159: Specification/standard Data: 54497-0441C0121-59 MANUFACTURERS STANDARD. 1 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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