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SS27576-4-46 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

SS27576-4-46: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: CROWNED HEXAGONCROWNED HEXAGON, grip_length: 2.875 INCHES MINIMUM AND 2.875 INCHES MINIMUM AND 2.891 INCHES MAXIMUM2.891 INCHES MAXIMUM IN, head_height: 0.126 INCHES MINIMUM AND 0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM0.141 INCHES MAXIMUM IN, thread_class: 3A3A, fastener_length: 3.303 INCHES NOMINAL3.303 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-140-6753, 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
SS27576-4-46
NSN: 5306-01-140-6753
FSC: 5306 — Bolts
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleCROWNED HEXAGONCROWNED HEXAGON
grip_length2.875 INCHES MINIMUM AND 2.875 INCHES MINIMUM AND 2.891 INCHES MAXIMUM2.891 INCHES MAXIMUM IN
head_height0.126 INCHES MINIMUM AND 0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM0.141 INCHES MAXIMUM IN
thread_class3A3A
fastener_length3.303 INCHES NOMINAL3.303 INCHES NOMINAL IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM OVERALL41.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HANDRIGHT-HAND
surface_treatmentCADMIUM OVERALLCADMIUM OVERALL
width_between_flats0.430 INCHES MINIMUM AND 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM0.439 INCHES MAXIMUM IN
nominal_thread_diameter0.250 INCHES0.250 INCHES IN
thread_quantity_per_inch2828
NSN5306-01-140-6753
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SS27576-4-46 · 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: 0.126 INCHES MINIMUM AND 0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM0.141 INCHES MAXIMUM IN
•
FASTENER LENGTH: 3.303 INCHES NOMINAL3.303 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM OVERALL41.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES0.250 INCHES IN
•
HEAD STYLE: CROWNED HEXAGONCROWNED HEXAGON
•
THREAD DIRECTION: RIGHT-HANDRIGHT-HAND
•
GRIP LENGTH: 2.875 INCHES MINIMUM AND 2.875 INCHES MINIMUM AND 2.891 INCHES MAXIMUM2.891 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.126 INCHES MINIMUM AND 0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM0.141 INCHES MAXIMUM IN
FASTENER LENGTH3.303 INCHES NOMINAL3.303 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM OVERALL41.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES0.250 INCHES IN
HEAD STYLECROWNED HEXAGONCROWNED HEXAGON
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
GRIP LENGTH2.875 INCHES MINIMUM AND 2.875 INCHES MINIMUM AND 2.891 INCHES MAXIMUM2.891 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.430 INCHES MINIMUM AND 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM0.439 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALLCADMIUM OVERALL
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 SS27576-4-46?
SS27576-4-46 is a BOLT,MACHINE.
What is the NSN for SS27576-4-46?
SS27576-4-46 is cataloged in the U.S. Government catalog under NSN 5306-01-140-6753. 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.