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H401-9D21 — BOLT,SHEAR

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

H401-9D21: BOLT,SHEAR.

The BOLT,SHEAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP H11 OVERALL, head_style: DOUBLE HEXAGON, grip_length: 1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM IN, head_height: 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.5607 INCHES MINIMUM AND 0.5616 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-043-0008, 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
H401-9D21
NSN: 5306-01-043-0008
FSC: 5306 — Bolts
CAGE: 97928 — HUCK INTL INC (USA)
SPECIFICATIONS
materialSTEEL COMP H11 OVERALL
head_styleDOUBLE HEXAGON
grip_length1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM IN
head_height0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.5607 INCHES MINIMUM AND 0.5616 INCHES MAXIMUM IN
thread_length0.564 INCHES MINIMUM AND 0.631 INCHES MAXIMUM IN
fastener_length1.886 INCHES MINIMUM AND 1.933 INCHES MAXIMUM IN
hardness_rating46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_between_flats0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN
NSN5306-01-043-0008
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: H401-9D21 · 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: 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.886 INCHES MINIMUM AND 1.933 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.564 INCHES MINIMUM AND 0.631 INCHES MAXIMUM IN
•
HARDNESS RATING: 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK UNTHREADED HOLE DIAMETER: 0.136 INCHES MINIMUM AND 0.146 INCHES MAXIMUM ALL HOLES IN
•
NOMINAL THREAD DIAMETER: 0.562 INCHES IN
•
HEAD STYLE: DOUBLE HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
FASTENER LENGTH1.886 INCHES MINIMUM AND 1.933 INCHES MAXIMUM IN
THREAD LENGTH0.564 INCHES MINIMUM AND 0.631 INCHES MAXIMUM IN
HARDNESS RATING46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.136 INCHES MINIMUM AND 0.146 INCHES MAXIMUM ALL HOLES IN
NOMINAL THREAD DIAMETER0.562 INCHES IN
HEAD STYLEDOUBLE HEXAGON
THREAD DIRECTIONRIGHT-HAND
SPECIFICATION/STANDARD DATA26512-GB511B MANUFACTURERS STANDARD
GRIP LENGTH1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES 4
VS3071-9F21DReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
EWSB22D9-21Reference document
Same NSN cross-reference
Reference document — Secondary reference
GB511B9D21Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
BM17020-9-21Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is H401-9D21?
H401-9D21 is a BOLT,SHEAR.
What parts can replace H401-9D21?
There are 4 known substitutes for H401-9D21: VS3071-9F21D, EWSB22D9-21, GB511B9D21 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for H401-9D21?
H401-9D21 is cataloged in the U.S. Government catalog under NSN 5306-01-043-0008. 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.