PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3M33-4-4ABolt,close Tolerance

The Boeing Company Div Defense · NSN 5306-00-619-5202 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-619-5202 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-619-5202. Primary manufacturer part number: 3M33-4-4A.
Features
  • Bolt,close Tolerance — FSC 5306
  • Thread Direction: RIGHT-HAND
  • Surface Finish: 32.0 MICROINCHES GRIP
  • Grip Length: 0.250 INCHES NOMINAL IN
  • Material Document and Classification: AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Thread Series Designator: UNF
  • Width Between Flats: 0.438 INCHES NOMINAL IN
  • Head Style: HEXAGON
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-619-5202, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 14 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-619-5202
Primary Part Number3M33-4-4A
Item NameBolt,close Tolerance
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
Thread DirectionRIGHT-HAND
Surface Finish32.0 MICROINCHES GRIP
Grip Length0.250 INCHES NOMINAL IN
Material Document and ClassificationAMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread Series DesignatorUNF
Width Between Flats0.438 INCHES NOMINAL IN
Head StyleHEXAGON
Thread Class3A A
Fastener Length0.719 INCHES NOMINAL IN
Head Height0.156 INCHES NOMINAL IN
Grip Diameter0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN
Nominal Thread Diameter0.250 INCHES IN
Thread Quantity Per Inch28
Thread Length0.469 INCHES MINIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3456-00-332-03763M33 INTERCHANGEABLE
Mandrel,roller Tube Expander
Babcock & Wilcox Co
3120-00-661-84393M33 INTERCHANGEABLE
Bushing,sleeve
Tuthill Corporation Dba Tuthill Pump Group
5970-00-665-2903 INTERCHANGEABLE
Tape,insulation,electrical
Cross-Reference Index
Part NumberManufacturer
3M33 The Boeing Company Div Defense (USA)
3M33-4-4A PRIMARY The Boeing Company Div Defense (USA)
Related Parts
3456-00-332-0376INTERCHANGEABLE
MANDREL,ROLLER TUBE EXPANDER
3M33
3120-00-661-8439INTERCHANGEABLE
BUSHING,SLEEVE
3M33
5970-00-665-2903INTERCHANGEABLE
TAPE,INSULATION,ELECTRICAL

Frequently Asked Questions

What is NSN 5306-00-619-5202?

NSN 5306-00-619-5202 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-619-5202?

NSN 5306-00-619-5202 has 2 cross-referenced part numbers: 3M33 (The Boeing Company Div Defense), 3M33-4-4A (The Boeing Company Div Defense).

What NSN replaces 5306-00-619-5202?

There are 3 known substitutes for 5306-00-619-5202: 3456-00-332-0376, 3120-00-661-8439, 5970-00-665-2903. Verify interchangeability with system specifications before substitution.

What are the specifications of 3M33-4-4A?

Key specifications for 3M33-4-4A: Thread Direction: RIGHT-HAND; Special Features: TENSILE STRENGTH SET AT ROOM TEMPERATURE NOT ABOVE 1200 DEG F DEGF; Surface Finish: 32.0 MICROINCHES GRIP; Grip Length: 0.250 INCHES NOMINAL IN. 15 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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