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B18.24A-2006 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

B18.24A-2006: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL UNS K03104 OVERALL, nut_style: HEXAGON, head_style: FLAT CHAMFER, nut_height: 0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN, head_height: 0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, thread_class: 3A A. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-821-3869, 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
B18.24A-2006
NSN: 5305-00-821-3869
NIINs: 008213869, 015570750, 016452576, 016454408, 016455034, 016570179
FSC: 5305 — Screws
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)
SPECIFICATIONS
materialSTEEL UNS K03104 OVERALL
nut_styleHEXAGON
head_styleFLAT CHAMFER
nut_height0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
head_height0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.729 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
hole_diameter0.167 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN
thread_length0.625 INCHES NOMINAL IN
thread_seriesUNF
surface_finish63.0 MICROINCHES THREADS
fastener_length2.500 INCHES NOMINAL IN
NSN5305-00-821-3869
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: B18.24A-2006 · 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
•
SURFACE FINISH: 63.0 MICROINCHES THREADS
•
HEAD HEIGHT: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.688 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 1.000 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE J429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES THREADS
HEAD HEIGHT0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
FASTENER LENGTH1.688 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH1.000 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE J429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 10
N22P25026B6Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
23036269-065Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
122-5377661 ITEM 35Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
454467Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS90725-65Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
12Z24-45Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B18.24A-2006?
B18.24A-2006 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace B18.24A-2006?
There are 10 known substitutes for B18.24A-2006: N22P25026B6, 23036269-065, 122-5377661 ITEM 35 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B18.24A-2006?
B18.24A-2006 is cataloged in the U.S. Government catalog under NSN 5305-00-821-3869. 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.