PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B1821BH050C225NScrew,cap,hexagon Head

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5305-01-598-2948 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-598-2948 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-598-2948. Primary manufacturer part number: B1821BH050C225N.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Thread Direction: RIGHT-HAND
  • Material: STEEL OVERALL
  • 1 verified cross-reference
  • Primary manufacturer: Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
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 5305-01-598-2948, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 2 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-01-598-2948
Primary Part NumberB1821BH050C225N
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Thread DirectionRIGHT-HAND
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5305-00-071-2072AES01C500B25AW9A91 INTERCHANGEABLE
Screw,cap,hexagon Head
The American Society of Mechanical Engineers
Cross-Reference Index
Part NumberManufacturer
B1821BH050C225N Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5305-00-071-2072INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
AES01C500B25AW9A91

Frequently Asked Questions

What is NSN 5305-01-598-2948?

NSN 5305-01-598-2948 is a Screw,cap,hexagon Head, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-01-598-2948?

NSN 5305-01-598-2948 has 1 cross-referenced part number: B1821BH050C225N (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5305-01-598-2948?

There is 1 known substitute for 5305-01-598-2948: 5305-00-071-2072. Verify interchangeability with system specifications before substitution.

What are the specifications of B1821BH050C225N?

Key specifications for B1821BH050C225N: Thread Direction: RIGHT-HAND; Special Features: HEAD STYLE HEX; Material: STEEL OVERALL. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-01-598-2948 still in active supply?

NSN 5305-01-598-2948 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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