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Technical Data Sheet
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DX427B — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

DX427B: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, grip_length: 0.855 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN, head_height: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-281-4704, 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
DX427B
NSN: 5306-00-281-4704
FSC: 5306 — Bolts
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
grip_length0.855 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN
head_height0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
thread_class2A A
thread_length0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
fastener_length1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
nominal_thread_diameter0.500 INCHES IN
thread_quantity_per_inch20
NSN5306-00-281-4704
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: DX427B · 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: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
GRIP LENGTH: 0.855 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
FASTENER LENGTH1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN
THREAD LENGTH0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.500 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH0.855 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
THREAD CLASS2A A
SUBSTITUTES & CROSS-REFERENCES 5
021133Reference document
Same NSN cross-reference
Reference document — Secondary reference
72R211Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
7A021133Reference document
Same NSN cross-reference
Reference document — Secondary reference
412202Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
BB999Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is DX427B?
DX427B is a BOLT,MACHINE.
What parts can replace DX427B?
There are 5 known substitutes for DX427B: 021133, 72R211, 7A021133 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DX427B?
DX427B is cataloged in the U.S. Government catalog under NSN 5306-00-281-4704. 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.