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369A1220 — BOLT,INTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

369A1220: BOLT,INTERNALLY RELIEVED BODY.

The BOLT,INTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740 OVERALL, head_style: HEXAGON, head_height: 0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.530 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN, fastener_length: 4.202 INCHES MINIMUM AND 4.222 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-948-3244, 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
369A1220
NSN: 5306-00-948-3244
FSC: 5306 — Bolts
CAGE: 8V613 — THE BOEING COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 OVERALL
head_styleHEXAGON
head_height0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
thread_class3A A
thread_length0.530 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN
fastener_length4.202 INCHES MINIMUM AND 4.222 INCHES MAXIMUM IN
style_designatorCONCENTRIC HOLE UNTHREADED
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_between_flats1.053 INCHES MINIMUM AND 1.066 INCHES MAXIMUM IN
nominal_thread_diameter0.750 INCHES IN
concentric_hole_diameter0.549 INCHES NOMINAL IN
NSN5306-00-948-3244
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 369A1220 · 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: 0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
•
FASTENER LENGTH: 4.202 INCHES MINIMUM AND 4.222 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.530 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: CONCENTRIC HOLE UNTHREADED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.750 INCHES IN
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
FASTENER LENGTH4.202 INCHES MINIMUM AND 4.222 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.530 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN
STYLE DESIGNATORCONCENTRIC HOLE UNTHREADED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.750 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS1.053 INCHES MINIMUM AND 1.066 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 369A1220?
369A1220 is a BOLT,INTERNALLY RELIEVED BODY.
What is the NSN for 369A1220?
369A1220 is cataloged in the U.S. Government catalog under NSN 5306-00-948-3244. 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.