PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

240144Bolt,square Neck

Hillman Group, Inc., the · NSN 5306-00-078-9696 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-078-9696 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-078-9696. Primary manufacturer part number: 240144.
Features
  • Bolt,square Neck — FSC 5306
  • Surface Treatment: ZINC OVERALL
  • Hardness Rating: 95.0 ROCKWELL B MAXIMUM OVERALL
  • Material Document and Classification: SAE GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Neck Width: 0.368 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Direction: RIGHT-HAND
  • Neck Length: 0.188 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Bolt,square Neck, cataloged under National Stock Number 5306-00-078-9696, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hillman Group, Inc., the. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-078-9696
Primary Part Number240144
Item NameBolt,square Neck
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerHillman Group, Inc., the
StatusCANCELLED
Surface TreatmentZINC OVERALL
Hardness Rating95.0 ROCKWELL B MAXIMUM OVERALL
Material Document and ClassificationSAE GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Neck Width0.368 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread DirectionRIGHT-HAND
Neck Length0.188 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
Thread Length0.875 INCHES MINIMUM IN
Nominal Thread Diameter0.375 INCHES IN
Head StyleBUTTON
Head Diameter0.782 INCHES MINIMUM AND 0.844 INCHES MAXIMUM IN
Fastener Length0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM IN
Head Height0.188 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN
Thread Quantity Per Inch16
Minimum Tensile Strength55000 POUNDS PER SQUARE INCH LBS
MaterialSTEEL OVERALL
Surface Treatment Document and ClassificationASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Thread Class2A A
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5306-00-268-2440 (MS35751-164)
HAZMATNo
Verified Substitutes 12
5306-00-268-2440MS35751-164 SUCCESSOR
Bolt,square Neck
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-01-460-3083MS35751-209 SUCCESSOR
Bolt,square Neck
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5306-01-656-67132-CB-25C-75 SUCCESSOR
Bolt,square Neck
Star Stainless Screw Co
Bolt,square Neck
5306-00-012-023121260 INTERCHANGEABLE
Bolt,square Neck
Fastenal Company
5306-00-012-6662 INTERCHANGEABLE
Bolt,square Neck
5305-00-051-082795054128 INTERCHANGEABLE
Screw,cap,hexagon Head
Ingersoll-Rand Company Dba Ingersoll-Rand
5306-00-058-0518 INTERCHANGEABLE
Bolt,square Neck
5306-00-089-0174 INTERCHANGEABLE
Bolt,square Neck
5306-00-089-0176 INTERCHANGEABLE
Bolt,square Neck
Cross-Reference Index
Part NumberManufacturer
SK-2400-8 Gse Management Co (USA)
489070 Fastener Solutions, Inc. (USA)
NASM35751 Aerospace Industries Association of America Inc
MS35751-69 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
ANSI B18.5 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
ASME B18.5 The American Society of Mechanical Engineers (USA)
240144 PRIMARY Hillman Group, Inc., the (USA)
Related Parts
SUCCESSOR 5306-00-268-2440 Bolt,square Neck · MS35751-164
5306-01-460-3083SUCCESSOR
BOLT,SQUARE NECK
MS35751-209
5306-01-656-6713SUCCESSOR
BOLT,SQUARE NECK
2-CB-25C-75
5306-01-664-6728SUCCESSOR
BOLT,SQUARE NECK
5306-00-012-0231INTERCHANGEABLE
BOLT,SQUARE NECK
21260
5306-00-012-6662INTERCHANGEABLE
BOLT,SQUARE NECK
5305-00-051-0827INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
95054128
5306-00-058-0518INTERCHANGEABLE
BOLT,SQUARE NECK
5306-00-089-0174INTERCHANGEABLE
BOLT,SQUARE NECK
5306-00-089-0176INTERCHANGEABLE
BOLT,SQUARE NECK
5306-00-089-1425INTERCHANGEABLE
BOLT,SQUARE NECK
5306-00-265-0782INTERCHANGEABLE
BOLT,SQUARE NECK

Frequently Asked Questions

What is NSN 5306-00-078-9696?

NSN 5306-00-078-9696 is a Bolt,square Neck, manufactured by Hillman Group, Inc., the, classified under FSC 5306 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5306-00-078-9696?

NSN 5306-00-078-9696 has 7 cross-referenced part numbers: SK-2400-8 (Gse Management Co), 489070 (Fastener Solutions, Inc.), NASM35751 (Aerospace Industries Association of America Inc), MS35751-69 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), ANSI B18.5 (American National Standards Institute Incorporated Dba American National Standards Institute) and 2 more.

What NSN replaces 5306-00-078-9696?

There are 12 known substitutes for 5306-00-078-9696: 5306-00-268-2440, 5306-01-460-3083, 5306-01-656-6713 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 240144?

Key specifications for 240144: Surface Treatment: ZINC OVERALL; Hardness Rating: 95.0 ROCKWELL B MAXIMUM OVERALL; Material Document and Classification: SAE GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Neck Width: 0.368 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-078-9696 still in active supply?

NSN 5306-00-078-9696 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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