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S343-3H8 — BOLT,SHEAR

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

S343-3H8: BOLT,SHEAR.

The BOLT,SHEAR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: SPLINE EXTENDED WASHER, grip_length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, head_height: 0.178 INCHES NOMINAL IN, thread_class: 3A A, grip_diameter: 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-179-9464, 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
S343-3H8
NSN: 5306-01-179-9464
FSC: 5306 — Bolts
CAGE: 17446 — HUCK INTERNATIONAL, INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleSPLINE EXTENDED WASHER
grip_length0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
head_height0.178 INCHES NOMINAL IN
thread_class3A A
grip_diameter0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN
hole_diameter0.032 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
thread_length0.374 INCHES MINIMUM AND 0.424 INCHES MAXIMUM IN
fastener_length0.884 INCHES MINIMUM AND 0.914 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OR ALUMINUM AND CHROMATE OVERALL
width_between_flats0.235 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
NSN5306-01-179-9464
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: S343-3H8 · 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
•
EXTENDED WASHER THICKNESS: 0.017 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.178 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.884 INCHES MINIMUM AND 0.914 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC 1ST TREATMENT RESPONSE OR MIL-C-83488,TYPE 2,CLASS 3 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.349 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.374 INCHES MINIMUM AND 0.424 INCHES MAXIMUM IN
•
HOLE CONFIGURATION STYLE: ROUND LONGITUDINAL HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.017 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
HEAD HEIGHT0.178 INCHES NOMINAL IN
FASTENER LENGTH0.884 INCHES MINIMUM AND 0.914 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC 1ST TREATMENT RESPONSE OR MIL-C-83488,TYPE 2,CLASS 3 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.349 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
THREAD LENGTH0.374 INCHES MINIMUM AND 0.424 INCHES MAXIMUM IN
HOLE CONFIGURATION STYLEROUND LONGITUDINAL HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLESPLINE EXTENDED WASHER
SUBSTITUTES & CROSS-REFERENCES 5
10116105Reference document
Same NSN cross-reference
Reference document — Informative reference only
PBF1267-3H8Reference document
Same NSN cross-reference
Reference document — Secondary reference
ST3M753-3H8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
122897-3H8Reference document
Same NSN cross-reference
Reference document — Secondary reference
AIC763-3H8Reference 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 S343-3H8?
S343-3H8 is a BOLT,SHEAR.
What parts can replace S343-3H8?
There are 5 known substitutes for S343-3H8: 10116105, PBF1267-3H8, ST3M753-3H8 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S343-3H8?
S343-3H8 is cataloged in the U.S. Government catalog under NSN 5306-01-179-9464. 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.