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6525-10-803-4101 — BOLT,INTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

6525-10-803-4101: BOLT,INTERNALLY RELIEVED BODY.

The BOLT,INTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OVERALL, head_style: HEXAGON, head_height: 0.500 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.790 INCHES MAXIMUM IN, fastener_length: 5.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-947-4153, 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
6525-10-803-4101
NSN: 5306-00-947-4153
FSC: 5306 — Bolts
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialSTEEL COMP E4340 OVERALL
head_styleHEXAGON
head_height0.500 INCHES NOMINAL IN
thread_class3A A
thread_length0.790 INCHES MAXIMUM IN
fastener_length5.000 INCHES NOMINAL IN
hardness_rating43.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM OVERALL
style_designatorCONCENTRIC HOLE UNTHREADED
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_between_flats1.437 INCHES NOMINAL IN
concentric_hole_depth0.780 INCHES NOMINAL IN
NSN5306-00-947-4153
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 6525-10-803-4101 · 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: 0.500 INCHES NOMINAL IN
•
FASTENER LENGTH: 5.000 INCHES NOMINAL IN
•
CONCENTRIC HOLE DEPTH: 0.780 INCHES NOMINAL IN
•
THREAD LENGTH: 0.790 INCHES MAXIMUM IN
•
HARDNESS RATING: 43.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK UNTHREADED HOLE DIAMETER: 0.141 INCHES NOMINAL FIRST HOLE IN
•
STYLE DESIGNATOR: CONCENTRIC HOLE UNTHREADED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.500 INCHES NOMINAL IN
FASTENER LENGTH5.000 INCHES NOMINAL IN
CONCENTRIC HOLE DEPTH0.780 INCHES NOMINAL IN
THREAD LENGTH0.790 INCHES MAXIMUM IN
HARDNESS RATING43.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.141 INCHES NOMINAL FIRST HOLE IN
STYLE DESIGNATORCONCENTRIC HOLE UNTHREADED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER1.000 INCHES IN
HEAD STYLEHEXAGON
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: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6525-10-803-4101?
6525-10-803-4101 is a BOLT,INTERNALLY RELIEVED BODY.
What is the NSN for 6525-10-803-4101?
6525-10-803-4101 is cataloged in the U.S. Government catalog under NSN 5306-00-947-4153. 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.