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N-677 PIECE 12 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

N-677 PIECE 12: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: COPPER OVERALL, head_style: HEXAGON, head_height: 0.250 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 4.693 INCHES MINIMUM AND 4.875 INCHES MAXIMUM IN, fastener_length: 4.875 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-240-4025, 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
N-677 PIECE 12
NSN: 5305-01-240-4025
FSC: 5305 — Screws
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialCOPPER OVERALL
head_styleHEXAGON
head_height0.250 INCHES NOMINAL IN
thread_class2A A
thread_length4.693 INCHES MINIMUM AND 4.875 INCHES MAXIMUM IN
fastener_length4.875 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_between_flats0.625 INCHES NOMINAL IN
nominal_thread_diameter0.625 INCHES IN
thread_quantity_per_inch11
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-240-4025
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: N-677 PIECE 12 · 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: 0.250 INCHES NOMINAL IN
•
FASTENER LENGTH: 4.875 INCHES NOMINAL IN
•
THREAD LENGTH: 4.693 INCHES MINIMUM AND 4.875 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.625 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.250 INCHES NOMINAL IN
FASTENER LENGTH4.875 INCHES NOMINAL IN
THREAD LENGTH4.693 INCHES MINIMUM AND 4.875 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.625 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.625 INCHES NOMINAL IN
THREAD CLASS2A A
THREAD QUANTITY PER INCH11
MATERIALCOPPER OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
B229713-23Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is N-677 PIECE 12?
N-677 PIECE 12 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace N-677 PIECE 12?
There is 1 known substitute for N-677 PIECE 12: B229713-23. Substitute compatibility should be verified for your specific system.
What is the NSN for N-677 PIECE 12?
N-677 PIECE 12 is cataloged in the U.S. Government catalog under NSN 5305-01-240-4025. 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.