PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GYK3-8MScrew,cap,hexagon Head

Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems · NSN 5305-01-283-3945 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-283-3945 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-283-3945. Primary manufacturer part number: GYK3-8M.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Material: STEEL OVERALL
  • Head Style: FILLISTER
  • FSC Application Data: WHEEL,MAIN LANDING GEAR
  • Fastener Length: 0.750 INCHES NOMINAL IN
  • 4 verified cross-references
  • Primary manufacturer: Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-283-3945, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-283-3945
Primary Part NumberGYK3-8M
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerLockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems
StatusACTIVE
Nominal Thread Diameter0.250 INCHES IN
MaterialSTEEL OVERALL
Head StyleFILLISTER
FSC Application DataWHEEL,MAIN LANDING GEAR
Fastener Length0.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
7025-01-434-24432007005-1 INTERCHANGEABLE
Display Unit
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
Cross-Reference Index
Part NumberManufacturer
2007005 Goodrich Corp Dba Goodrich Corp (USA)
GYK3-8M Sps Technologies, Llc Dba PB Fasteners (USA)
GYK3-8M Meggitt Aircraft Braking Systems Corporation (USA)
GYK3-8M PRIMARY Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems (USA)
Related Parts
7025-01-434-2443INTERCHANGEABLE
DISPLAY UNIT
2007005-1

Frequently Asked Questions

What is NSN 5305-01-283-3945?

NSN 5305-01-283-3945 is a Screw,cap,hexagon Head, manufactured by Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-283-3945?

NSN 5305-01-283-3945 has 4 cross-referenced part numbers: 2007005 (Goodrich Corp Dba Goodrich Corp), GYK3-8M (Sps Technologies, Llc Dba PB Fasteners), GYK3-8M (Meggitt Aircraft Braking Systems Corporation), GYK3-8M (Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems).

What NSN replaces 5305-01-283-3945?

There is 1 known substitute for 5305-01-283-3945: 7025-01-434-2443. Verify interchangeability with system specifications before substitution.

What are the specifications of GYK3-8M?

Key specifications for GYK3-8M: Nominal Thread Diameter: 0.250 INCHES IN; Material: STEEL OVERALL; Head Style: FILLISTER; FSC Application Data: WHEEL,MAIN LANDING GEAR. 6 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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