PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASME B18.2.1-1996Screw,lag

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-00-412-9789 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-412-9789 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-412-9789. Primary manufacturer part number: ASME B18.2.1-1996.
Features
  • Screw,lag — FSC 5305
  • Width Between Flats: 0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
  • Fastener Length: 4.000 INCHES NOMINAL IN
  • Nonmachine Thread Style: GIMLET POINT (TYPE A, AB OR BA)
  • Minimum Tensile Strength: 60000 POUNDS PER SQUARE INCH LBS
  • Shoulder Shape: ROUND FIRST SHOULDER
  • Nonmachine Nominal Thread Diameter: 0.500 INCHES IN
  • Material Document and Classification: ASTM A307, GRADE A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,lag, cataloged under National Stock Number 5305-00-412-9789, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN5305-00-412-9789
Primary Part NumberASME B18.2.1-1996
Item NameScrew,lag
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Width Between Flats0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Fastener Length4.000 INCHES NOMINAL IN
Nonmachine Thread StyleGIMLET POINT (TYPE A, AB OR BA)
Minimum Tensile Strength60000 POUNDS PER SQUARE INCH LBS
Shoulder ShapeROUND FIRST SHOULDER
Nonmachine Nominal Thread Diameter0.500 INCHES IN
Material Document and ClassificationASTM A307, GRADE A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Surface Treatment Document and ClassificationASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Hardness Rating69.0 ROCKWELL B MINIMUM OVERALL
Head StyleHEXAGON
Head Height0.302 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN
Surface TreatmentZINC OVERALL
Shoulder Length0.156 INCHES MINIMUM FIRST SHOULDER IN
Shoulder Diameter0.482 INCHES MINIMUM AND 0.515 INCHES MAXIMUM FIRST SHOULDER IN
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5935-00-149-398511584792 INTERCHANGEABLE
Connector,plug,electrical
Army, United States Department of the Dba Watervliet Arsenal Div Business Development
5940-00-926-820612751B INTERCHANGEABLE
Terminal,feedthru
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
5935-01-005-92664862 INTERCHANGEABLE
Connector,plug,electrical
Cooper Wiring Devices Inc.
4931-01-084-3737975-4 INTERCHANGEABLE
Retractor,cord,light
Daburn Wire & Cable Corp
5330-01-179-20872211454002 INTERCHANGEABLE
Seal,plain
Mcdal Corporation Dba Mcdal Corp
5305-01-487-2938AES01CA00K00AW9A91 INTERCHANGEABLE
Screw,cap,hexagon Head
The American Society of Mechanical Engineers
5330-01-602-88759754 INTERCHANGEABLE
Seal,plain
DP Manufacturing Inc.
4720-01-728-69129754 INTERCHANGEABLE
Hose Assembly,nonmetallic
Spx Flow Technology Systems, Inc. Dba Apv Crepaco
Cross-Reference Index
Part NumberManufacturer
MS16992-585-ZE Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
ASME B18.2.1-1996 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
9754 Slater Industries Incslacan Div (CAN)
Related Parts
5935-00-149-3985INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
11584792
5940-00-926-8206INTERCHANGEABLE
TERMINAL,FEEDTHRU
12751B
5935-01-005-9266INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
4862
4931-01-084-3737INTERCHANGEABLE
RETRACTOR,CORD,LIGHT
975-4
5330-01-179-2087INTERCHANGEABLE
SEAL,PLAIN
2211454002
5305-01-487-2938INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
AES01CA00K00AW9A91
5330-01-602-8875INTERCHANGEABLE
SEAL,PLAIN
9754
4720-01-728-6912INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
9754

Frequently Asked Questions

What is NSN 5305-00-412-9789?

NSN 5305-00-412-9789 is a Screw,lag, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-412-9789?

NSN 5305-00-412-9789 has 3 cross-referenced part numbers: MS16992-585-ZE (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), ASME B18.2.1-1996 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 9754 (Slater Industries Incslacan Div).

What NSN replaces 5305-00-412-9789?

There are 8 known substitutes for 5305-00-412-9789: 5935-00-149-3985, 5940-00-926-8206, 5935-01-005-9266 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ASME B18.2.1-1996?

Key specifications for ASME B18.2.1-1996: Width Between Flats: 0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Fastener Length: 4.000 INCHES NOMINAL IN; Nonmachine Thread Style: GIMLET POINT (TYPE A, AB OR BA); Minimum Tensile Strength: 60000 POUNDS PER SQUARE INCH LBS. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-412-9789 still in active supply?

NSN 5305-00-412-9789 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.
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