PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3311ABolt,machine

Caterpillar Inc Div Caterpillar Defense · NSN 5306-00-254-9662 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-254-9662 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-254-9662. Primary manufacturer part number: 3311A.
Features
  • Bolt,machine — FSC 5306
  • Width Between Flats: 1.125 INCHES NOMINAL IN
  • Thread Class: 2A A
  • Minimum Yield Strength: 145000 POUNDS PER SQUARE INCH LBS
  • Material: STEEL OVERALL
  • Hardness Rating: 30.0 ROCKWELL C NOMINAL OVERALL
  • Features Provided: FINISHED HEAD
  • Thread Series Designator: UNF
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-254-9662, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN5306-00-254-9662
Primary Part Number3311A
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Width Between Flats1.125 INCHES NOMINAL IN
Thread Class2A A
Minimum Yield Strength145000 POUNDS PER SQUARE INCH LBS
MaterialSTEEL OVERALL
Hardness Rating30.0 ROCKWELL C NOMINAL OVERALL
Features ProvidedFINISHED HEAD
Thread Series DesignatorUNF
Head Height0.562 INCHES NOMINAL IN
Nominal Thread Diameter0.750 INCHES IN
Thread DirectionRIGHT-HAND
Fastener Length3.500 INCHES NOMINAL IN
Head StyleHEXAGON
Thread Quantity Per Inch16
Thread Length1.500 INCHES MINIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
1660-00-485-330855635 INTERCHANGEABLE
Seal-Slinger---Appl
Honeywell International Inc. Div Aerospace - Torrance
5305-00-579-04783311A INTERCHANGEABLE
Screw,machine
Brinkley Technology Group Llc Dba Hercules Manufacturing
7050-01-015-6062 INTERCHANGEABLE
Generator,function,analog Comput
4730-01-023-1207 INTERCHANGEABLE
Tailpiece,union
Cross-Reference Index
Part NumberManufacturer
3311A PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
55635 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
003311A Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
1660-00-485-3308INTERCHANGEABLE
SEAL-SLINGER---APPL
55635
5305-00-579-0478INTERCHANGEABLE
SCREW,MACHINE
3311A
7050-01-015-6062INTERCHANGEABLE
GENERATOR,FUNCTION,ANALOG COMPUT
4730-01-023-1207INTERCHANGEABLE
TAILPIECE,UNION

Frequently Asked Questions

What is NSN 5306-00-254-9662?

NSN 5306-00-254-9662 is a Bolt,machine, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-254-9662?

NSN 5306-00-254-9662 has 3 cross-referenced part numbers: 3311A (Caterpillar Inc Div Caterpillar Defense), 55635 (Caterpillar Inc Div Caterpillar Defense), 003311A (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 5306-00-254-9662?

There are 4 known substitutes for 5306-00-254-9662: 1660-00-485-3308, 5305-00-579-0478, 7050-01-015-6062 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3311A?

Key specifications for 3311A: Width Between Flats: 1.125 INCHES NOMINAL IN; Thread Class: 2A A; Minimum Yield Strength: 145000 POUNDS PER SQUARE INCH LBS; Material: STEEL OVERALL. 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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