PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-21236Bolt,square Neck

Cnh Industrial America Llc Dba Cnh America · NSN 5306-00-451-9057 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-451-9057 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-451-9057. Primary manufacturer part number: 20-21236.
Features
  • Bolt,square Neck — FSC 5306
  • Material Document and Classification: SAE GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Fastener Length: 2.250 INCHES NOMINAL IN
  • Nominal Thread Diameter: 0.750 INCHES IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Material: STEEL OVERALL
  • Thread Quantity Per Inch: 10
  • 2 verified cross-references
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 5306-00-451-9057, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Cnh Industrial America Llc Dba Cnh America. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN5306-00-451-9057
Primary Part Number20-21236
Item NameBolt,square Neck
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerCnh Industrial America Llc Dba Cnh America
StatusACTIVE
Material Document and ClassificationSAE GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Fastener Length2.250 INCHES NOMINAL IN
Nominal Thread Diameter0.750 INCHES IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialSTEEL OVERALL
Thread Quantity Per Inch10
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6685-00-081-2864BA13YPG4RW INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
2805-00-354-178520023A INTERCHANGEABLE
Rotator Cap,valve
Brinkley Technology Group Llc Dba Hercules Manufacturing
5360-00-536-7334118503 INTERCHANGEABLE
Spring
Circor Aerospace, Inc. Dba Circor Aerospace Inc
5355-01-194-8516131580 INTERCHANGEABLE
Knob
Astronautics Corporation of America
Cross-Reference Index
Part NumberManufacturer
20-21236 PRIMARY Cnh Industrial America Llc Dba Cnh America (USA)
118-503 Cnh Industrial America Llc Dba Cnh America (USA)
Related Parts
6685-00-081-2864INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
BA13YPG4RW
2805-00-354-1785INTERCHANGEABLE
ROTATOR CAP,VALVE
20023A
5360-00-536-7334INTERCHANGEABLE
SPRING
118503
5355-01-194-8516INTERCHANGEABLE
KNOB
131580

Frequently Asked Questions

What is NSN 5306-00-451-9057?

NSN 5306-00-451-9057 is a Bolt,square Neck, manufactured by Cnh Industrial America Llc Dba Cnh America, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-451-9057?

NSN 5306-00-451-9057 has 2 cross-referenced part numbers: 20-21236 (Cnh Industrial America Llc Dba Cnh America), 118-503 (Cnh Industrial America Llc Dba Cnh America).

What NSN replaces 5306-00-451-9057?

There are 4 known substitutes for 5306-00-451-9057: 6685-00-081-2864, 2805-00-354-1785, 5360-00-536-7334 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-21236?

Key specifications for 20-21236: Material Document and Classification: SAE GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Fastener Length: 2.250 INCHES NOMINAL IN; Nominal Thread Diameter: 0.750 INCHES IN; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 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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