PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FF-T-791Bolt,eye

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5306-00-003-6685 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-003-6685 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-003-6685. Primary manufacturer part number: FF-T-791.
Features
  • Bolt,eye — FSC 5306
  • Eye Stock Diameter: 0.438 INCHES NOMINAL IN
  • Eye Width: 0.719 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 13
  • Style Designator: OVAL, CLOSED
  • Material: STEEL OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Surface Treatment Document and Classification: MIL-Z-17871 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
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 5306-00-003-6685, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 13 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-003-6685
Primary Part NumberFF-T-791
Item NameBolt,eye
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Eye Stock Diameter0.438 INCHES NOMINAL IN
Eye Width0.719 INCHES NOMINAL IN
Thread Quantity Per Inch13
Style DesignatorOVAL, CLOSED
MaterialSTEEL OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Surface Treatment Document and ClassificationMIL-Z-17871 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread DirectionLEFT-HAND
Thread Length4.250 INCHES MINIMUM IN
Eye Length1.250 INCHES MINIMUM IN
Thread Class2A A
Shank Length5.719 INCHES NOMINAL IN
Nominal Thread Diameter0.500 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5340-00-187-8186ASTM F 1145-5 SUCCESSOR
Turnbuckle
Astm Institute for Standards Research (inc)
5340-00-150-4777ASTM-F1145-I1B 1/2X9 SUCCESSOR
Turnbuckle
American Society for Testing and Materials Dba Astm International
5340-00-168-6315MS27120-10 SUCCESSOR
Clevis,rod End
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-179-9249MS27120-5 SUCCESSOR
Clevis,rod End
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-179-9250MS27954-3 SUCCESSOR
Turnbuckle Body
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-184-2783MS27120-8 SUCCESSOR
Clevis,rod End
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-187-8174ASTM-F1145-I1D 3/8X6 SUCCESSOR
Turnbuckle
American Society for Testing and Materials Dba Astm International
5340-00-187-8176ASTM-F1145-I1D 1/2X9 SUCCESSOR
Turnbuckle
American Society for Testing and Materials Dba Astm International
5340-00-187-8179ASTM-F1145-I1D 5/8X9 SUCCESSOR
Turnbuckle
American Society for Testing and Materials Dba Astm International
5340-00-187-8180ASTM-F1145-I1D 5/8X12 SUCCESSOR
Turnbuckle
American Society for Testing and Materials Dba Astm International
Cross-Reference Index
Part NumberManufacturer
FF-T-791 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MS27950-7 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5340-00-187-8186SUCCESSOR
TURNBUCKLE
ASTM F 1145-5
5340-00-150-4777SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1B 1/2X9
5340-00-168-6315SUCCESSOR
CLEVIS,ROD END
MS27120-10
5340-00-179-9249SUCCESSOR
CLEVIS,ROD END
MS27120-5
5340-00-179-9250SUCCESSOR
TURNBUCKLE BODY
MS27954-3
5340-00-184-2783SUCCESSOR
CLEVIS,ROD END
MS27120-8
5340-00-187-8174SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1D 3/8X6
5340-00-187-8176SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1D 1/2X9
5340-00-187-8179SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1D 5/8X9
5340-00-187-8180SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1D 5/8X12
5340-00-187-8184SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1D 1/4X4
5340-00-187-8192SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1D 1X12

Frequently Asked Questions

What is NSN 5306-00-003-6685?

NSN 5306-00-003-6685 is a Bolt,eye, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-003-6685?

NSN 5306-00-003-6685 has 2 cross-referenced part numbers: FF-T-791 (Federal Specifications Promulgated by General Services Administration Washington DC), MS27950-7 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5306-00-003-6685?

There are 12 known substitutes for 5306-00-003-6685: 5340-00-187-8186, 5340-00-150-4777, 5340-00-168-6315 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FF-T-791?

Key specifications for FF-T-791: Eye Stock Diameter: 0.438 INCHES NOMINAL IN; Eye Width: 0.719 INCHES NOMINAL IN; Thread Quantity Per Inch: 13; Style Designator: OVAL, CLOSED. 14 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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