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S279 — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

S279: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, shank_length: 2.000 INCHES NOMINAL IN, thread_class: 2A A, coil_quantity: 15-1/2, thread_length: 2.000 INCHES NOMINAL IN, overall_length: 4.940 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-017-9859, 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
S279
NSN: 5305-00-017-9859
NIINs: 000179859, 014354720, 014812500, 014840540, 014874722
FSC: 5305 — Screws
CAGE: 63734 — KAITLIN CORP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
shank_length2.000 INCHES NOMINAL IN
thread_class2A A
coil_quantity15-1/2
thread_length2.000 INCHES NOMINAL IN
overall_length4.940 INCHES NOMINAL IN
inside_diameter0.912 INCHES NOMINAL IN
style_designatorROUND, CLOSED W/SHOULDER
thread_directionRIGHT-HAND
eye_outside_width2.750 INCHES NOMINAL IN
shoulder_diameter1.380 INCHES NOMINAL IN
eye_stock_diameter0.620 INCHES NOMINAL IN
NSN5305-00-017-9859
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: S279 · 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: 0.281 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.125 INCHES NOMINAL IN
•
THREAD LENGTH: 1.125 INCHES NOMINAL IN
•
HARDNESS RATING: 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 0.438 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.281 INCHES NOMINAL IN
FASTENER LENGTH1.125 INCHES NOMINAL IN
THREAD LENGTH1.125 INCHES NOMINAL IN
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.438 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.625 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE AND 5 GRADE
MINIMUM YIELD STRENGTH85000 POUNDS PER SQUARE INCH LBS
SUBSTITUTES & CROSS-REFERENCES 3
179859Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
FFS85TYPE2STYLE10PGRADE5Reference document
Same NSN cross-reference
Reference document — Identification reference
BB36246Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S279?
S279 is a NUT,PLAIN,HEXAGON.
What parts can replace S279?
There are 3 known substitutes for S279: 179859, FFS85TYPE2STYLE10PGRADE5, BB36246. Substitute compatibility should be verified for your specific system.
What is the NSN for S279?
S279 is cataloged in the U.S. Government catalog under NSN 5305-00-017-9859. 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.