PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B18231B05065NScrew,cap,hexagon Head

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 5305-01-648-4141 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-648-4141 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-648-4141. Primary manufacturer part number: B18231B05065N.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Head Height: 3.3 MILLIMETERS MINIMUM AND 3.6 MILLIMETERS MAXIMUM MM
  • Width Between Flats: 7.7 MILLIMETERS MINIMUM AND 8.0 MILLIMETERS MAXIMUM MM
  • External Thread Tolerance Class: 6G G
  • Thread Length: 16.0 MILLIMETERS NOMINAL MM
  • Head Style: HEXAGON
  • Fastener Length: 65.0 MILLIMETERS NOMINAL MM
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-648-4141, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is American National Standards Institute Incorporated Dba American National Standards Institute. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, 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
NSN5305-01-648-4141
Primary Part NumberB18231B05065N
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerAmerican National Standards Institute Incorporated Dba American National Standards Institute
StatusACTIVE
Head Height3.3 MILLIMETERS MINIMUM AND 3.6 MILLIMETERS MAXIMUM MM
Width Between Flats7.7 MILLIMETERS MINIMUM AND 8.0 MILLIMETERS MAXIMUM MM
External Thread Tolerance Class6G G
Thread Length16.0 MILLIMETERS NOMINAL MM
Head StyleHEXAGON
Fastener Length65.0 MILLIMETERS NOMINAL MM
Thread DirectionRIGHT-HAND
Thread Pitch in Millimeters0.8
Nominal Thread Diameter5.0 MILLIMETERS MM
Surface TreatmentZINC OVERALL
Thread Series DesignatorISO M
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5306-01-423-2036AES07M08B050CG8A91 INTERCHANGEABLE
Bolt,machine
American National Standards Institute Incorporated Dba American National Standards Institute
5306-01-423-3294AES07M08B070CG9A81 INTERCHANGEABLE
Bolt,machine
The American Society of Mechanical Engineers
5305-01-435-7561B18231B05016N INTERCHANGEABLE
Screw,cap,hexagon Head
American National Standards Institute Incorporated Dba American National Standards Institute
5305-01-491-4771AES07M08B060CG9A91 INTERCHANGEABLE
Screw,cap,hexagon Head
The American Society of Mechanical Engineers
5305-01-501-2793AES07M12D050CH1A81 INTERCHANGEABLE
Screw,cap,hexagon Head
The American Society of Mechanical Engineers
5305-01-551-9816AEB02M12D060SF3A31 INTERCHANGEABLE
Screw,cap,hexagon Head
The American Society of Mechanical Engineers
5305-01-582-542412759-00959 INTERCHANGEABLE
Screw,cap,hexagon Head
Fastenal Company Dba Fastenal Co
5305-01-593-1142AES07M24G080WC2A11 INTERCHANGEABLE
Screw,cap,hexagon Head
The American Society of Mechanical Engineers
5306-01-661-010291463-10-25 INTERCHANGEABLE
Bolt,machine
Scfm Corporation Dba Scfm Corp
5305-01-723-1921AES07M14E082WC25A1 INTERCHANGEABLE
Screw,cap,hexagon Head
The American Society of Mechanical Engineers
Cross-Reference Index
Part NumberManufacturer
B18231B05065N The American Society of Mechanical Engineers (USA)
B18231B05065N PRIMARY American National Standards Institute Incorporated Dba American National Standards Institute (USA)
ASME B18.2.3.1M American National Standards Institute Incorporated Dba American National Standards Institute (USA)
Related Parts
5306-01-423-2036INTERCHANGEABLE
BOLT,MACHINE
AES07M08B050CG8A91
5306-01-423-3294INTERCHANGEABLE
BOLT,MACHINE
AES07M08B070CG9A81
5305-01-435-7561INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
B18231B05016N
5305-01-491-4771INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
AES07M08B060CG9A91
5305-01-501-2793INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
AES07M12D050CH1A81
5305-01-551-9816INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
AEB02M12D060SF3A31
5305-01-582-5424INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
12759-00959
5305-01-593-1142INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
AES07M24G080WC2A11
5306-01-661-0102INTERCHANGEABLE
BOLT,MACHINE
91463-10-25
5305-01-723-1921INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
AES07M14E082WC25A1

Frequently Asked Questions

What is NSN 5305-01-648-4141?

NSN 5305-01-648-4141 is a Screw,cap,hexagon Head, manufactured by American National Standards Institute Incorporated Dba American National Standards Institute, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-648-4141?

NSN 5305-01-648-4141 has 3 cross-referenced part numbers: B18231B05065N (The American Society of Mechanical Engineers), B18231B05065N (American National Standards Institute Incorporated Dba American National Standards Institute), ASME B18.2.3.1M (American National Standards Institute Incorporated Dba American National Standards Institute).

What NSN replaces 5305-01-648-4141?

There are 10 known substitutes for 5305-01-648-4141: 5306-01-423-2036, 5306-01-423-3294, 5305-01-435-7561 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B18231B05065N?

Key specifications for B18231B05065N: Head Height: 3.3 MILLIMETERS MINIMUM AND 3.6 MILLIMETERS MAXIMUM MM; Width Between Flats: 7.7 MILLIMETERS MINIMUM AND 8.0 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Thread Length: 16.0 MILLIMETERS NOMINAL MM. 13 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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