PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21812Screw,cap,hexagon Head

Boart Canada Inc · NSN 5305-01-356-7208 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-356-7208 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-356-7208. Primary manufacturer part number: 21812.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Material: STEEL OVERALL
  • Thread Length: 2.300 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
  • Head Style: HEXAGON
  • Width Between Flats: 1.100 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
  • Material Document and Classification: SAE GR8 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,cap,hexagon Head, cataloged under National Stock Number 5305-01-356-7208, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Boart Canada Inc. Government technical data includes 12 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-356-7208
Primary Part Number21812
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerBoart Canada Inc
StatusACTIVE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialSTEEL OVERALL
Thread Length2.300 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Head StyleHEXAGON
Width Between Flats1.100 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
Material Document and ClassificationSAE GR8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Nominal Thread Diameter0.750 INCHES IN
Thread Class3A A
Head Height0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
Thread Quantity Per Inch10
Fastener Length2.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5930-00-140-418621812 INTERCHANGEABLE
Switch,liquid Level
Setra Systems, Inc. Dba Gems Sensors
2530-00-339-5130 INTERCHANGEABLE
Brake Lining Kit
5360-00-506-9509 INTERCHANGEABLE
Spring,helical,compression
5360-00-623-542121812 INTERCHANGEABLE
Spring
Mason Electric Co. Dba Mason Controls
5961-01-169-6504 INTERCHANGEABLE
Transistor
6550-01-371-4633221812 INTERCHANGEABLE
Culture Medium,brain Heart Infus
Becton, Dickinson and Company Dba Becton Dickinson & Co
5990-01-423-818921812 INTERCHANGEABLE
Synchro,receiver
Elbitamerica, Inc.
6630-01-592-25906805344 INTERCHANGEABLE
Lamp,hematology Analyzer
Beckman Coulter Inc Div Us Customer Operations
1630-01-685-94282-1812 INTERCHANGEABLE
Brake,multiple Disk
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
Cross-Reference Index
Part NumberManufacturer
21812 PRIMARY Boart Canada Inc (CAN)
Related Parts
5930-00-140-4186INTERCHANGEABLE
SWITCH,LIQUID LEVEL
21812
2530-00-339-5130INTERCHANGEABLE
BRAKE LINING KIT
5360-00-506-9509INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5360-00-623-5421INTERCHANGEABLE
SPRING
21812
5961-01-169-6504INTERCHANGEABLE
TRANSISTOR
6550-01-371-4633INTERCHANGEABLE
CULTURE MEDIUM,BRAIN HEART INFUS
221812
5990-01-423-8189INTERCHANGEABLE
SYNCHRO,RECEIVER
21812
6630-01-592-2590INTERCHANGEABLE
LAMP,HEMATOLOGY ANALYZER
6805344
1630-01-685-9428INTERCHANGEABLE
BRAKE,MULTIPLE DISK
2-1812

Frequently Asked Questions

What is NSN 5305-01-356-7208?

NSN 5305-01-356-7208 is a Screw,cap,hexagon Head, manufactured by Boart Canada Inc, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-356-7208?

NSN 5305-01-356-7208 has 1 cross-referenced part number: 21812 (Boart Canada Inc).

What NSN replaces 5305-01-356-7208?

There are 9 known substitutes for 5305-01-356-7208: 5930-00-140-4186, 2530-00-339-5130, 5360-00-506-9509 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21812?

Key specifications for 21812: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Material: STEEL OVERALL; Thread Length: 2.300 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND. 12 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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