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B1821BH250C800N — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

B1821BH250C800N: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL UNS K04100 OVERALL, head_style: HEXAGON, head_height: 1.479 INCHES MINIMUM AND 1.583 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 5.500 INCHES NOMINAL IN, fastener_length: 8.00 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-614-8969, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
B1821BH250C800N
NSN: 5305-01-614-8969
FSC: 5305 — Screws
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)
SPECIFICATIONS
materialSTEEL UNS K04100 OVERALL
head_styleHEXAGON
head_height1.479 INCHES MINIMUM AND 1.583 INCHES MAXIMUM IN
thread_class2A A
thread_length5.500 INCHES NOMINAL IN
fastener_length8.00 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentCHROMATE AND ZINC OVERALL
width_between_flats3.625 INCHES MINIMUM AND 3.750 INCHES MAXIMUM IN
end_item_identification2350-01-390-4683
nominal_thread_diameter2.50 INCHES IN
thread_quantity_per_inch4
NSN5305-01-614-8969
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: B1821BH250C800N · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HEAD HEIGHT: 1.479 INCHES MINIMUM AND 1.583 INCHES MAXIMUM IN
•
FASTENER LENGTH: 8.00 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633 ASSN STD ALL TREATMENT RESPONSES OVERALL
•
THREAD LENGTH: 5.500 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A354 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 2.50 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT1.479 INCHES MINIMUM AND 1.583 INCHES MAXIMUM IN
FASTENER LENGTH8.00 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633 ASSN STD ALL TREATMENT RESPONSES OVERALL
THREAD LENGTH5.500 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A354 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER2.50 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS3.625 INCHES MINIMUM AND 3.750 INCHES MAXIMUM IN
SURFACE TREATMENTCHROMATE AND ZINC OVERALL
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 1
B18.24Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B1821BH250C800N?
B1821BH250C800N is a SCREW,CAP,HEXAGON HEAD.
What parts can replace B1821BH250C800N?
There is 1 known substitute for B1821BH250C800N: B18.24. Substitute compatibility should be verified for your specific system.
What is the NSN for B1821BH250C800N?
B1821BH250C800N is cataloged in the U.S. Government catalog under NSN 5305-01-614-8969. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.