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307NC6275 — BOLT,INTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

307NC6275: BOLT,INTERNALLY RELIEVED BODY.

The BOLT,INTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 420 OVERALL, head_style: ROUND W/WRENCH FLATS, head_height: 0.812 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.875 INCHES NOMINAL IN, thread_length: 0.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-146-9886, 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
307NC6275
NSN: 5306-01-146-9886
FSC: 5306 — Bolts
CAGE: 830Q4 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS-WRIGHT STEAM AND AIR SOLUTIONS DIV STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL COMP 420 OVERALL
head_styleROUND W/WRENCH FLATS
head_height0.812 INCHES NOMINAL IN
thread_class2A A
head_diameter0.875 INCHES NOMINAL IN
thread_length0.750 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC) CONCENTRIC HOLE
fastener_length5.375 INCHES NOMINAL IN
shoulder_length2.656 INCHES NOMINAL IN
style_designatorCONCENTRIC HOLE THREADED
thread_directionRIGHT-HAND
threads_per_inch16 CONCENTRIC HOLE
NSN5306-01-146-9886
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 307NC6275 · 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: 0.812 INCHES NOMINAL IN
•
FASTENER LENGTH: 5.375 INCHES NOMINAL IN
•
INTERNAL THREAD LENGTH: 1.188 INCHES NOMINAL CONCENTRIC HOLE IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC) CONCENTRIC HOLE
•
INTERNAL THREAD DIRECTION: RIGHT-HAND CONCENTRIC HOLE
•
THREAD LENGTH: 0.750 INCHES NOMINAL IN
•
THREADS PER INCH: 16 CONCENTRIC HOLE
•
STYLE DESIGNATOR: CONCENTRIC HOLE THREADED
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.812 INCHES NOMINAL IN
FASTENER LENGTH5.375 INCHES NOMINAL IN
INTERNAL THREAD LENGTH1.188 INCHES NOMINAL CONCENTRIC HOLE IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC) CONCENTRIC HOLE
INTERNAL THREAD DIRECTIONRIGHT-HAND CONCENTRIC HOLE
THREAD LENGTH0.750 INCHES NOMINAL IN
THREADS PER INCH16 CONCENTRIC HOLE
STYLE DESIGNATORCONCENTRIC HOLE THREADED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-853A,CL 5A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL A
NOMINAL THREAD DIAMETER0.500 INCHES IN
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 2
3224024 PIECE 307Reference document
Same NSN cross-reference
Reference document — Secondary reference
NC-6275 PIECE 307Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 307NC6275?
307NC6275 is a BOLT,INTERNALLY RELIEVED BODY.
What parts can replace 307NC6275?
There are 2 known substitutes for 307NC6275: 3224024 PIECE 307, NC-6275 PIECE 307. Substitute compatibility should be verified for your specific system.
What is the NSN for 307NC6275?
307NC6275 is cataloged in the U.S. Government catalog under NSN 5306-01-146-9886. 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.