PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2221Bolt,eye

Zf Industrieantriebe Witten Gmbh · NSN 5306-00-993-4370 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-993-4370 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-993-4370. Primary manufacturer part number: 2221.
Features
  • Bolt,eye — FSC 5306
  • Thread Length: 0.750 INCHES MINIMUM IN
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Eye Outside Width: 1.000 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
  • Shank Length: 2.000 INCHES NOMINAL IN
  • Eye Stock Diameter: 0.250 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 20
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Bolt,eye, cataloged under National Stock Number 5306-00-993-4370, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Zf Industrieantriebe Witten Gmbh. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-993-4370
Primary Part Number2221
Item NameBolt,eye
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerZf Industrieantriebe Witten Gmbh
StatusACTIVE
Thread Length0.750 INCHES MINIMUM IN
Nominal Thread Diameter0.250 INCHES IN
Eye Outside Width1.000 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Shank Length2.000 INCHES NOMINAL IN
Eye Stock Diameter0.250 INCHES NOMINAL IN
Thread Quantity Per Inch20
Thread Class2A A
Eye Inside Diameter0.500 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Shoulder Diameter0.406 INCHES NOMINAL IN
Distance From Center of Eye to Shank End2.625 INCHES NOMINAL IN
Shoulder Thickness0.062 INCHES NOMINAL IN
Style DesignatorROUND, CLOSED W/SHOULDER
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Surface TreatmentZINC OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5306-00-206-38952221 SUCCESSOR
Bolt,eye
Fabrication Specialty Inc Dba Fabrication Specialty Inc
Tape,sealing,sterilization Indic
Plug,protective,dust and Moistur
Lock Set,mortise
Cross-Reference Index
Part NumberManufacturer
2221 Zf Industrieantriebe Witten Gmbh (DEU)
2221 1-4X2 North and Judd Inc Wilcox-Crittenden Div (USA)
Related Parts
5306-00-206-3895SUCCESSOR
BOLT,EYE
2221
6530-00-299-9821SUCCESSOR
TAPE,SEALING,STERILIZATION INDIC
5340-00-989-5769SUCCESSOR
PLUG,PROTECTIVE,DUST AND MOISTUR
5340-01-029-7940SUCCESSOR
LOCK SET,MORTISE

Frequently Asked Questions

What is NSN 5306-00-993-4370?

NSN 5306-00-993-4370 is a Bolt,eye, manufactured by Zf Industrieantriebe Witten Gmbh, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-993-4370?

NSN 5306-00-993-4370 has 2 cross-referenced part numbers: 2221 (Zf Industrieantriebe Witten Gmbh), 2221 1-4X2 (North and Judd Inc Wilcox-Crittenden Div).

What NSN replaces 5306-00-993-4370?

There are 4 known substitutes for 5306-00-993-4370: 5306-00-206-3895, 6530-00-299-9821, 5340-00-989-5769 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2221?

Key specifications for 2221: Thread Length: 0.750 INCHES MINIMUM IN; Nominal Thread Diameter: 0.250 INCHES IN; Eye Outside Width: 1.000 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND. 18 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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