PartsTable
Technical Data Sheet

347/23911 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

347/23911: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: CROWNED HEXAGON, head_height: 0.203 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.875 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN, fastener_length: 1.078 INCHES MINIMUM AND 1.391 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-549-5177, 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
347/23911
NSN: 5305-01-549-5177
FSC: 5305 — Screws
CAGE: 0JKF0 — JCB INC. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleCROWNED HEXAGON
head_height0.203 INCHES NOMINAL IN
thread_class2A A
thread_length0.875 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN
fastener_length1.078 INCHES MINIMUM AND 1.391 INCHES MAXIMUM IN
hardness_rating33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCHROMATE ZINC OVERALL
width_between_flats0.500 INCHES NOMINAL IN
supplementary_featuresMATERIAL IS GRADE 8 ALLOY STEEL
end_item_identification2350-01-509-3953, CARRIER,CARGO; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
NSN5305-01-549-5177
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 347/23911 · 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: 0.203 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.078 INCHES MINIMUM AND 1.391 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.875 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN
•
SUPPLEMENTARY FEATURES: MATERIAL IS GRADE 8 ALLOY STEEL
•
HARDNESS RATING: 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
•
HEAD STYLE: CROWNED HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
SPECIFICATION/STANDARD DATA: 81343 - SAE J429 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.203 INCHES NOMINAL IN
FASTENER LENGTH1.078 INCHES MINIMUM AND 1.391 INCHES MAXIMUM IN
THREAD LENGTH0.875 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN
SUPPLEMENTARY FEATURESMATERIAL IS GRADE 8 ALLOY STEEL
HARDNESS RATING33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLECROWNED HEXAGON
THREAD DIRECTIONRIGHT-HAND
SPECIFICATION/STANDARD DATA81343 - SAE J429 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
WIDTH BETWEEN FLATS0.500 INCHES NOMINAL IN
SURFACE TREATMENTCHROMATE ZINC OVERALL
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 1
92620A583Same 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 347/23911?
347/23911 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 347/23911?
There is 1 known substitute for 347/23911: 92620A583. Substitute compatibility should be verified for your specific system.
What is the NSN for 347/23911?
347/23911 is cataloged in the U.S. Government catalog under NSN 5305-01-549-5177. 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.