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801520-3 — BOLT,INTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

801520-3: BOLT,INTERNALLY RELIEVED BODY.

The BOLT,INTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 0.328 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.484 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN, fastener_length: 1.750 INCHES MINIMUM AND 1.797 INCHES MAXIMUM IN, hardness_rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-159-5724, 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
801520-3
NSN: 5306-01-159-5724
FSC: 5306 — Bolts
CAGE: 29780 — MAG AEROSPACE INDUSTRIES, LLC DIV SAFRAN CABINS (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8640 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL
head_styleHEXAGON
head_height0.328 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
thread_class3A A
thread_length0.484 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
fastener_length1.750 INCHES MINIMUM AND 1.797 INCHES MAXIMUM IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
style_designatorCONCENTRIC HOLE UNTHREADED
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_between_flats0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
nominal_thread_diameter0.625 INCHES IN
NSN5306-01-159-5724
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 801520-3 · 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: 0.328 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.750 INCHES MINIMUM AND 1.797 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.484 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: CONCENTRIC HOLE UNTHREADED
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.328 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
FASTENER LENGTH1.750 INCHES MINIMUM AND 1.797 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.484 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORCONCENTRIC HOLE UNTHREADED
NOMINAL THREAD DIAMETER0.625 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 801520-3?
801520-3 is a BOLT,INTERNALLY RELIEVED BODY.
What is the NSN for 801520-3?
801520-3 is cataloged in the U.S. Government catalog under NSN 5306-01-159-5724. 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.