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4000280012 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4000280012: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.88 INCHES NOMINAL IN, fastener_length: 2.00 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-657-8987, 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
4000280012
NSN: 5305-01-657-8987
FSC: 5305 — Screws
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
thread_class2A A
thread_length0.88 INCHES NOMINAL IN
fastener_length2.00 INCHES NOMINAL IN
special_featuresFASTENER SHALL BE FREE OF HYDROGEN EMBRITTLEMENT, STEEL GRADE 8 PER SAE J429, FINISH D60, TYPE 1 PER FM100 MAGNI BLACK 575 , BODY DIAMETER MIN 0.3065MAX 0.3125
thread_directionRIGHT-HAND
width_between_flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
end_item_identification3930-01-641-7505
nominal_thread_diameter0.31 INCHES IN
thread_quantity_per_inch18
NSN5305-01-657-8987
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4000280012 · 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: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.00 INCHES NOMINAL IN
•
THREAD LENGTH: 0.88 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.31 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
FASTENER LENGTH2.00 INCHES NOMINAL IN
THREAD LENGTH0.88 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.31 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
SPECIAL FEATURESFASTENER SHALL BE FREE OF HYDROGEN EMBRITTLEMENT, STEEL GRADE 8 PER SAE J429, FINISH D60, TYPE 1 PER FM100 MAGNI BLACK 575 , BODY DIAMETER MIN 0.3065MAX 0.3125
THREAD CLASS2A A
END ITEM IDENTIFICATION3930-01-641-7505
SUBSTITUTES & CROSS-REFERENCES 1
4000280Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 4000280012?
4000280012 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 4000280012?
There is 1 known substitute for 4000280012: 4000280. Substitute compatibility should be verified for your specific system.
What is the NSN for 4000280012?
4000280012 is cataloged in the U.S. Government catalog under NSN 5305-01-657-8987. 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.