PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet
MRO / Hardware and Abrasives / 5306-00-638-7708

65-4-4Bolt,machine

Air Force Standard · NSN 5306-00-638-7708 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-638-7708 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-638-7708. Primary manufacturer part number: 65-4-4.
L 0.369 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN ⌀0.250 INCHES IN 20 BOLT/SCREW PROFILE
5306-00-638-7708 — No Item Name Available illustration
Features
  • Bolt,machine — FSC 5306
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Material: STEEL OVERALL
  • Thread Class: 2A A
  • Thread Direction: RIGHT-HAND
  • Head Style: HEXAGON
  • Minimum Yield Strength: 40000 POUNDS PER SQUARE INCH LBS
  • Nominal Thread Diameter: 0.250 INCHES IN
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 5306-00-638-7708, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Air Force Standard. Government technical data includes 15 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5306-00-638-7708
Primary Part Number65-4-4
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerAir Force Standard
StatusACTIVE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialSTEEL OVERALL
Thread Class2A A
Thread DirectionRIGHT-HAND
Head StyleHEXAGON
Minimum Yield Strength40000 POUNDS PER SQUARE INCH LBS
Nominal Thread Diameter0.250 INCHES IN
Thread Length0.369 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
Head Height0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
Features ProvidedFINISHED HEAD
Thread Quantity Per Inch20
Width Between Flats0.363 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Minimum Tensile Strength750000 POUNDS PER SQUARE INCH LBS
Fastener Length0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
⇄ Verified Substitutes 10
Irrigation Set,urological,tur
5960-00-060-6609 INTERCHANGEABLE
Electron Tube
4010-00-404-2899 INTERCHANGEABLE
Link,chain,cold Shut
6150-00-500-72866544 INTERCHANGEABLE
Lead,electrical
Page Chester Ltd Dba Cooperative Industries Div Cooperative Industries Aerospace Defense
5998-01-041-274065-44 INTERCHANGEABLE
Circuit Card Assembly
Teledyne Instruments, Inc. Dba Teledyne Hastings Instruments Div Teledyne Hastings Instruments
2940-01-110-694746544 INTERCHANGEABLE
Filter Element,intake Air Cleane
Wix Corp
2940-01-285-2965UM01HNBGK INTERCHANGEABLE
Air Cleaner,intake
Falls Filtration Technologies, Inc.
5136-01-431-1626 INTERCHANGEABLE
Die,thread Cutting
4130-01-483-51246544 INTERCHANGEABLE
Regulator,air Conditioner
893 Mfg, Llc
5136-01-652-03786544 INTERCHANGEABLE
Die,thread Cutting
Stanley Tools Div of Stanley Works
Cross-Reference Index
Part NumberManufacturer
65-4-4 Air Force Standard
Related Parts
6515-01-144-4044SUCCESSOR
IRRIGATION SET,UROLOGICAL,TUR
5960-00-060-6609INTERCHANGEABLE
ELECTRON TUBE
4010-00-404-2899INTERCHANGEABLE
LINK,CHAIN,COLD SHUT
6150-00-500-7286INTERCHANGEABLE
LEAD,ELECTRICAL
6544
5998-01-041-2740INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
65-44
2940-01-110-6947INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
46544
2940-01-285-2965INTERCHANGEABLE
AIR CLEANER,INTAKE
UM01HNBGK
5136-01-431-1626INTERCHANGEABLE
DIE,THREAD CUTTING
4130-01-483-5124INTERCHANGEABLE
REGULATOR,AIR CONDITIONER
6544
5136-01-652-0378INTERCHANGEABLE
DIE,THREAD CUTTING
6544

Frequently Asked Questions

What is NSN 5306-00-638-7708?

NSN 5306-00-638-7708 is a Bolt,machine, manufactured by Air Force Standard, classified under FSC 5306 (No Item Name Available). Status: active.

What are the part numbers for NSN 5306-00-638-7708?

NSN 5306-00-638-7708 has 1 cross-referenced part number: 65-4-4 (Air Force Standard).

What NSN replaces 5306-00-638-7708?

There are 10 known substitutes for 5306-00-638-7708: 6515-01-144-4044, 5960-00-060-6609, 4010-00-404-2899 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 65-4-4?

Key specifications for 65-4-4: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Material: STEEL OVERALL; Thread Class: 2A A; Thread Direction: RIGHT-HAND. 15 total characteristics are documented in the Federal Logistics Information System.

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