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S343-4-7 — BOLT,SHEAR

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

S343-4-7: BOLT,SHEAR.

The BOLT,SHEAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-13 OVERALL, head_style: SPLINE EXTENDED WASHER, grip_length: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN, head_height: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-262-3491, 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
S343-4-7
NSN: 5306-01-262-3491
FSC: 5306 — Bolts
CAGE: 97928 — HUCK INTL INC (USA)
SPECIFICATIONS
materialSTEEL COMP XM-13 OVERALL
head_styleSPLINE EXTENDED WASHER
grip_length0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
head_height0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
thread_length0.458 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN
fastener_length0.891 INCHES MINIMUM AND 0.921 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
head_minor_diameter0.235 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
supplementary_featuresWRENCHING ELEMENT MS33787-10,HD MK NAS1347 TY 4
NSN5306-01-262-3491
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: S343-4-7 · 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: 0.026 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.891 INCHES MINIMUM AND 0.921 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.458 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN
•
SUPPLEMENTARY FEATURES: WRENCHING ELEMENT MS33787-10,HD MK NAS1347 TY 4
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5629,UNS S13800 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.026 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
HEAD HEIGHT0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
FASTENER LENGTH0.891 INCHES MINIMUM AND 0.921 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
THREAD LENGTH0.458 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN
SUPPLEMENTARY FEATURESWRENCHING ELEMENT MS33787-10,HD MK NAS1347 TY 4
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5629,UNS S13800 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLESPLINE EXTENDED WASHER
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 8
VFK600-4-7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MB156-4-7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
GS1032-4-7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
VS3190-4-7Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
10116182Reference document
Same NSN cross-reference
Reference document — Informative reference only
PBF1267-4-7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S343-4-7?
S343-4-7 is a BOLT,SHEAR.
What parts can replace S343-4-7?
There are 8 known substitutes for S343-4-7: VFK600-4-7, MB156-4-7, GS1032-4-7 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S343-4-7?
S343-4-7 is cataloged in the U.S. Government catalog under NSN 5306-01-262-3491. 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.