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B1831AH240040L — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

B1831AH240040L: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL PROPERTY CLASS 12.9 FASTENER, head_style: FLAT CHAMFER, head_height: 23.70 MILLIMETERS MINIMUM AND 24.00 MILLIMETERS MAXIMUM MM, head_diameter: 35.4 MILLIMETERS MINIMUM AND 36.0 MILLIMETERS MAXIMUM MM, fastener_length: 34.0 MILLIMETERS MINIMUM AND 40.0 MILLIMETERS MAXIMUM MM, locking_feature: PELLET OR STRIP OR PATCH THREADS. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-417-6449, 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
B1831AH240040L
NSN: 5305-01-417-6449
FSC: 5305 — Screws
CAGE: 2Y363 — IMI SERVICES USA INC (USA)
SPECIFICATIONS
materialSTEEL PROPERTY CLASS 12.9 FASTENER
head_styleFLAT CHAMFER
head_height23.70 MILLIMETERS MINIMUM AND 24.00 MILLIMETERS MAXIMUM MM
head_diameter35.4 MILLIMETERS MINIMUM AND 36.0 MILLIMETERS MAXIMUM MM
fastener_length34.0 MILLIMETERS MINIMUM AND 40.0 MILLIMETERS MAXIMUM MM
locking_featurePELLET OR STRIP OR PATCH THREADS
surface_treatmentCADMIUM AND CHROMATE FASTENER
width_across_flats19.0 MILLIMETERS NOMINAL MM
internal_drive_styleHEXAGON
nominal_thread_diameter24.0 MILLIMETERS MM
thread_series_designatorM
thread_pitch_in_millimeters3.0
NSN5305-01-417-6449
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: B1831AH240040L · 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: 19.0 MILLIMETERS NOMINAL MM
•
HEAD HEIGHT: 23.70 MILLIMETERS MINIMUM AND 24.00 MILLIMETERS MAXIMUM MM
•
EXTERNAL THREAD TOLERANCE CLASS: 6G G
•
FASTENER LENGTH: 34.0 MILLIMETERS MINIMUM AND 40.0 MILLIMETERS MAXIMUM MM
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY2, CL3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
•
THREAD PITCH IN MILLIMETERS: 3.0
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
•
NOMINAL THREAD DIAMETER: 24.0 MILLIMETERS MM
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS19.0 MILLIMETERS NOMINAL MM
HEAD HEIGHT23.70 MILLIMETERS MINIMUM AND 24.00 MILLIMETERS MAXIMUM MM
EXTERNAL THREAD TOLERANCE CLASS6G G
FASTENER LENGTH34.0 MILLIMETERS MINIMUM AND 40.0 MILLIMETERS MAXIMUM MM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY2, CL3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
THREAD PITCH IN MILLIMETERS3.0
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A574 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
NOMINAL THREAD DIAMETER24.0 MILLIMETERS MM
HEAD STYLEFLAT CHAMFER
LOCKING FEATUREPELLET OR STRIP OR PATCH THREADS
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B1831AH240040L?
B1831AH240040L is a SCREW,CAP,SOCKET HEAD.
What is the NSN for B1831AH240040L?
B1831AH240040L is cataloged in the U.S. Government catalog under NSN 5305-01-417-6449. This indicates validated use in U.S. government and defense supply chains.
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