PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B1821BH044F075NScrew,cap,hexagon Head

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 5305-00-709-8282 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-709-8282 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-709-8282. Primary manufacturer part number: B1821BH044F075N.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Thread Quantity Per Inch: 20
  • Thread Length: 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
  • Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
  • Head Height: 0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
  • Minimum Tensile Strength: 150000 POUNDS PER SQUARE INCH LBS
  • Head Style: HEXAGON
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 5305-00-709-8282, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-709-8282
Primary Part NumberB1821BH044F075N
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerAmerican National Standards Institute Incorporated Dba American National Standards Institute
StatusCANCELLED
Thread Quantity Per Inch20
Thread Length0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
Hardness Rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
Head Height0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Minimum Tensile Strength150000 POUNDS PER SQUARE INCH LBS
Head StyleHEXAGON
Width Between Flats0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Thread Series DesignatorUNF
Surface Treatment Document and ClassificationASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentZINC AND CHROMATE OVERALL
Nondefinitive Spec/std Data2 TYPE AND 10P STYLE AND 8 GRADE
Fastener Length0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Nominal Thread Diameter0.438 INCHES IN
Material Document and ClassificationASAEJ429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread Class2A A
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5305-00-710-4187MS90726-83 INTERCHANGEABLE
Screw,cap,hexagon Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
6605-00-896-4346454-970 INTERCHANGEABLE
Counter Assy,indica
Cmc Electronics Inc
Cross-Reference Index
Part NumberManufacturer
B1821BH044F075N PRIMARY American National Standards Institute Incorporated Dba American National Standards Institute (USA)
MS90727-83 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS90726-83 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
FF-S-85 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
454970 General Motors Corp (USA)
454970 General Motors Llc Dba General Motors Llc (USA)
Related Parts
5305-00-710-4187INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
MS90726-83
6605-00-896-4346INTERCHANGEABLE
COUNTER ASSY,INDICA
454-970

Frequently Asked Questions

What is NSN 5305-00-709-8282?

NSN 5305-00-709-8282 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: cancelled.

What are the part numbers for NSN 5305-00-709-8282?

NSN 5305-00-709-8282 has 6 cross-referenced part numbers: B1821BH044F075N (American National Standards Institute Incorporated Dba American National Standards Institute), MS90727-83 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS90726-83 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), FF-S-85 (Federal Specifications Promulgated by General Services Administration Washington DC), 454970 (General Motors Corp) and 1 more.

What NSN replaces 5305-00-709-8282?

There are 2 known substitutes for 5305-00-709-8282: 5305-00-710-4187, 6605-00-896-4346. Verify interchangeability with system specifications before substitution.

What are the specifications of B1821BH044F075N?

Key specifications for B1821BH044F075N: Thread Quantity Per Inch: 20; Thread Length: 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL; Head Height: 0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-709-8282 still in active supply?

NSN 5305-00-709-8282 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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