PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN6-20Bolt,machine

Aeronautical Standards Group Dept of Navy and Air Force · NSN 5306-00-167-3686 · FSC 5306 · No Item Name Available
Verified by PartsTable
NSN 5306-00-167-3686 — this item is cataloged by the U.S. Government under National Stock Number 5306-00-167-3686. Primary manufacturer part number: AN6-20.
Features
  • Bolt,machine — FSC 5306
  • Width Between Flats: 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
  • Head Height: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
  • Fastener Length: 2.062 INCHES MINIMUM AND 2.109 INCHES MAXIMUM IN
  • Minimum Tensile Strength: 125000 POUNDS PER SQUARE INCH LBS
  • Material: STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL
  • Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
  • Features Provided: FINISHED HEAD
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 4140 or Steel Comp 8740 or Steel Comp 8630 or Steel Comp 8735 or Steel Comp 4130 or Steel Comp 4037 Overall construction
General Description

The Bolt,machine, cataloged under National Stock Number 5306-00-167-3686, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Aeronautical Standards Group Dept of Navy and Air Force. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5306-00-167-3686
Primary Part NumberAN6-20
Item NameBolt,machine
FSC / FSG5306 / 53 — No Item Name Available
ManufacturerAeronautical Standards Group Dept of Navy and Air Force
StatusCANCELLED
Width Between Flats0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
Head Height0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
Fastener Length2.062 INCHES MINIMUM AND 2.109 INCHES MAXIMUM IN
Minimum Tensile Strength125000 POUNDS PER SQUARE INCH LBS
MaterialSTEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL
Surface Treatment Document and ClassificationQQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
Features ProvidedFINISHED HEAD
Grip Length1.422 INCHES MINIMUM AND 1.453 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Thread Quantity Per Inch24
Thread Series DesignatorUNF
Head StyleHEXAGON
Nominal Thread Diameter0.375 INCHES IN
Thread Class3A A
Material Document and ClassificationMIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OR AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Shank Unthreaded Hole Diameter0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE IN
Distance From Head Largest Bearing Surface to Shank Hole Center1.859 INCHES MINIMUM AND 1.891 INCHES MAXIMUM FIRST HOLE IN
Thread Length0.609 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
No Item Name Available
6240-00-234-578117 INTERCHANGEABLE
Lamp,incandescent
Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch
5325-00-639-50544002-13 INTERCHANGEABLE
Stud Assembly,turnlock Fastener
Howmet Global Fastening Systems Inc Div Camloc Products
5935-00-929-9519400213 INTERCHANGEABLE
Connector,plug,electrical
Aimtron Systems, Llc
3040-01-068-2139400213 INTERCHANGEABLE
Shaft,shouldered
Telemechanics Inc
3120-01-191-2870400213 INTERCHANGEABLE
Bushing
Racine Tool and Machine Co Div of Burge Machine Inc
5310-01-526-316640021 3 INTERCHANGEABLE
Nut Blank
Brunswick Corp Dba Mercury Marine Div Mercury Marine
5985-01-681-1905AN620 INTERCHANGEABLE
Antenna
Zebra Technologies International Llc
Cross-Reference Index
Part NumberManufacturer
AN6-20 Aeronautical Standards Group Dept of Navy and Air Force (USA)
400213 Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company (USA)
Related Parts
5306-00-734-5850SUCCESSOR
NO ITEM NAME AVAILABLE
6240-00-234-5781INTERCHANGEABLE
LAMP,INCANDESCENT
17
5325-00-639-5054INTERCHANGEABLE
STUD ASSEMBLY,TURNLOCK FASTENER
4002-13
5935-00-929-9519INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
400213
3040-01-068-2139INTERCHANGEABLE
SHAFT,SHOULDERED
400213
3120-01-191-2870INTERCHANGEABLE
BUSHING
400213
5310-01-526-3166INTERCHANGEABLE
NUT BLANK
40021 3
5985-01-681-1905INTERCHANGEABLE
ANTENNA
AN620

Frequently Asked Questions

What is NSN 5306-00-167-3686?

NSN 5306-00-167-3686 is a Bolt,machine, manufactured by Aeronautical Standards Group Dept of Navy and Air Force, classified under FSC 5306 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5306-00-167-3686?

NSN 5306-00-167-3686 has 2 cross-referenced part numbers: AN6-20 (Aeronautical Standards Group Dept of Navy and Air Force), 400213 (Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company).

What NSN replaces 5306-00-167-3686?

There are 8 known substitutes for 5306-00-167-3686: 5306-00-734-5850, 6240-00-234-5781, 5325-00-639-5054 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AN6-20?

Key specifications for AN6-20: Width Between Flats: 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN; Head Height: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN; Fastener Length: 2.062 INCHES MINIMUM AND 2.109 INCHES MAXIMUM IN; Minimum Tensile Strength: 125000 POUNDS PER SQUARE INCH LBS. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5306-00-167-3686 still in active supply?

NSN 5306-00-167-3686 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.
PartsTable Design LLC · partstable.com