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4181011001 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4181011001: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, head_diameter: 0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, thread_length: 1.50 INCHES MINIMUM IN, fastener_length: 3.00 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-657-4351, 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
4181011001
NSN: 5305-01-657-4351
FSC: 5305 — Screws
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
head_diameter0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
thread_length1.50 INCHES MINIMUM IN
fastener_length3.00 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE ZINC OVERALL
width_across_flats0.375 INCHES NOMINAL IN
internal_drive_styleHEXAGON
end_item_identificationMRAP - M-ATV
nominal_thread_diameter0.500 INCHES IN
NSN5305-01-657-4351
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4181011001 · 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
•
WIDTH ACROSS FLATS: 0.375 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
FASTENER LENGTH: 3.00 INCHES NOMINAL IN
•
THREAD LENGTH: 1.50 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
•
COLOR: BLACK OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.375 INCHES NOMINAL IN
HEAD HEIGHT0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
FASTENER LENGTH3.00 INCHES NOMINAL IN
THREAD LENGTH1.50 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
COLORBLACK OVERALL
SURFACE TREATMENTPHOSPHATE ZINC OVERALL
INTERNAL DRIVE STYLEHEXAGON
SUBSTITUTES & CROSS-REFERENCES 1
4181011Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 4181011001?
4181011001 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 4181011001?
There is 1 known substitute for 4181011001: 4181011. Substitute compatibility should be verified for your specific system.
What is the NSN for 4181011001?
4181011001 is cataloged in the U.S. Government catalog under NSN 5305-01-657-4351. 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.