PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFB584Bolt,square Neck

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5306-00-012-6652 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-012-6652 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-012-6652. Primary manufacturer part number: FFB584.
Features
  • Bolt,square Neck — FSC 5306
  • Head Style: BUTTON
  • Fastener Length: 2.500 INCHES NOMINAL IN
  • Material Document and Classification: QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS AND A STYLE
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Head Diameter: 0.688 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Bolt,square Neck, cataloged under National Stock Number 5306-00-012-6652, 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 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5306-00-012-6652
Primary Part NumberFFB584
Item NameBolt,square Neck
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Head StyleBUTTON
Fastener Length2.500 INCHES NOMINAL IN
Material Document and ClassificationQQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Nondefinitive Spec/std Data1 TYPE AND 1 CLASS AND A STYLE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Head Diameter0.688 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Neck Width0.307 INCHES MINIMUM AND 0.324 INCHES MAXIMUM IN
Thread Class2A A
Neck Length0.156 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
Nominal Thread Diameter0.312 INCHES IN
Head Height0.156 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING OVERALL
Thread Length0.875 INCHES MINIMUM IN
Surface TreatmentCADMIUM OR ZINC OVERALL
Thread Quantity Per Inch18
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5306-00-010-9115MS35751-72 SUCCESSOR
Bolt,square Neck
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Bolt,square Neck
Bolt,square Neck
5306-00-027-0722MS35751-19 SUCCESSOR
Bolt,square Neck
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-00-053-8381MS35751-40 SUCCESSOR
Bolt,square Neck
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-00-054-8004548004 SUCCESSOR
Bolt,square Neck
U S Army Tank Automotive Command Amsta-Im-Mm
Bolt,square Neck
5306-00-067-8511MS35751-83 SUCCESSOR
Bolt,square Neck
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-00-089-1424MS35751-136 SUCCESSOR
Bolt,square Neck
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-00-089-1427MS35751-145 SUCCESSOR
Bolt,square Neck
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
FFB584 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5306-00-010-9115SUCCESSOR
BOLT,SQUARE NECK
MS35751-72
5306-00-012-0955SUCCESSOR
BOLT,SQUARE NECK
5306-00-012-6227SUCCESSOR
BOLT,SQUARE NECK
5306-00-027-0722SUCCESSOR
BOLT,SQUARE NECK
MS35751-19
5306-00-053-8381SUCCESSOR
BOLT,SQUARE NECK
MS35751-40
5306-00-054-8004SUCCESSOR
BOLT,SQUARE NECK
548004
5306-00-054-8052SUCCESSOR
BOLT,SQUARE NECK
5306-00-067-8511SUCCESSOR
BOLT,SQUARE NECK
MS35751-83
5306-00-089-1424SUCCESSOR
BOLT,SQUARE NECK
MS35751-136
5306-00-089-1427SUCCESSOR
BOLT,SQUARE NECK
MS35751-145
5306-00-089-1531SUCCESSOR
BOLT,SQUARE NECK
MS35751-140
5306-00-248-8700SUCCESSOR
BOLT,SQUARE NECK

Frequently Asked Questions

What is NSN 5306-00-012-6652?

NSN 5306-00-012-6652 is a Bolt,square Neck, 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 5306-00-012-6652?

NSN 5306-00-012-6652 has 1 cross-referenced part number: FFB584 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5306-00-012-6652?

There are 12 known substitutes for 5306-00-012-6652: 5306-00-010-9115, 5306-00-012-0955, 5306-00-012-6227 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FFB584?

Key specifications for FFB584: Head Style: BUTTON; Fastener Length: 2.500 INCHES NOMINAL IN; Material Document and Classification: QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS AND A STYLE. 16 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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